Gas Welding Flowmeters | McMaster-Carr

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185 Products

Easy-Read Tank-Mount Pressure-Regulating Valves with Flowmeter for Inert Gas

Flowmeters let you see the gas flow rate from a distance. These valves automatically reduce a high inlet pressure from compressed gas tanks to a lower, stable outlet pressure. All have Compressed Gas Association (CGA) numbered inlet fittings for secure connections to compressed gas tanks. Choose a valve with the same CGA number as your tank and other system components. They have a gauge for monitoring inlet pressure from the tank.

For Argon

Male Inlet × Female

Outlet With One

Flowmeter

Single Stage—Single-stage valves reduce pressure in one step, which causes the outlet pressure to fluctuate slightly as you empty the tank. They’re best for applications where a constant outlet pressure isn’t critical.

1 Flowmeter—Valves with one flowmeter are for one piece of equipment on a tank. The flowmeter has a single scale.

	Inlet					Outlet					Material
	CGA No.	Location	Thread Direction	Pressure Gauge Reading Range, psi	No. of Stages	Thread Size	Location	Thread Direction	Flow Range	No. of Flowmeters	Body	Seal	Diaphragm		Each
UNF Female Outlet × NGO Male Inlet



		580	Side	Right Hand	0 to 4,000	Single	5/8"-18	Side	Right Hand	0 scfh to 70 scfh	1	Brass	PTFE	Neoprene	78595A43	0000000

Valve Union Fittings

		Each
Adapter	78595A49	000000

For Argon and Argon/Carbon Dioxide Blend

Male Inlet × Female

Outlet With One

Flowmeter

1 Flowmeter—Valves with one flowmeter are for one piece of equipment on a tank. The flowmeter has a single scale.

	Inlet					Outlet					Material
	CGA No.	Location	Thread Direction	Pressure Gauge Reading Range, psi	No. of Stages	Thread Size	Location	Thread Direction	Flow Range	No. of Flowmeters	Body	Seal	Diaphragm		Each
UNF Female Outlet × NGO Male Inlet



		580	Side	Right Hand	0 to 3,000	Single	5/8"-18	Side	Right Hand	0 to 70 scfh (Argon), 0 to 70 scfh (Argon/Carbon Dioxide Blend)	1	Brass	PTFE	Neoprene	78595A5	0000000

Valve Union Fittings

		Each
Adapter	78595A49	000000

For Argon, Argon/Carbon Dioxide Blend, and Helium

Two Stage—Two-stage valves progressively reduce pressure over two steps for more consistent outlet pressure at all times. They’re often used in applications that require a constant outlet pressure regardless of the tank level.

1 Flowmeter—Valves with one flowmeter are for one piece of equipment on a tank. The flowmeter has a single scale.

	Inlet					Outlet					Material
	CGA No.	Location	Thread Direction	Pressure Gauge Reading Range, psi	No. of Stages	Thread Size	Location	Thread Direction	Flow Range	No. of Flowmeters	Body	Seal	Diaphragm		Each
UNF Female Outlet × NGO Male Inlet



		580	Side	Right Hand	0 to 3,000	Two	5/8"-18	Side	Right Hand	0 to 40 scfh (Argon), 0 to 40 scfh (Argon/Carbon Dioxide Blend), 0 to 150 scfh (Helium)	1	Brass	PTFE	Neoprene	78595A495	0000000

Valve Union Fittings

		Each
Adapter	78595A49	000000

For Argon, Argon/Carbon Dioxide Blend, Carbon Dioxide, and Helium

Male Inlet × Female

Outlet With One

Flowmeter

1 Flowmeter—Valves with one flowmeter are for one piece of equipment on a tank. The flowmeter has a single scale.

	Inlet					Outlet					Material
	CGA No.	Location	Thread Direction	Pressure Gauge Reading Range, psi	No. of Stages	Thread Size	Location	Thread Direction	Flow Range	No. of Flowmeters	Body	Seal	Diaphragm		Each
UNF Female Outlet × NGO Male Inlet



		580	Side	Right Hand	0 to 4,000	Single	5/8"-18	Side	Right Hand	0 to 60 scfh (Argon) 0 to 60 scfh (Argon/Carbon Dioxide Blend) 0 to 50 scfh (Carbon Dioxide) 0 to 160 scfh (Helium)	1	Brass	Buna-N	Brass	78595A394	0000000

Valve Union Fittings

		Each
Adapter	78595A49	000000

For Argon and Helium


Male Inlet × Female Outlet With One Flowmeter	Male Inlet × Female Outlet With Two Flowmeters

1 Flowmeter—Valves with one flowmeter are for one piece of equipment on a tank. The flowmeter has a single scale.

2 Flowmeters—Valve with two flowmeters lets you simultaneously run two pieces of equipment from one tank. Both flowmeters have a dual scale.

	Inlet					Outlet					Material
	CGA No.	Location	Thread Direction	Pressure Gauge Reading Range, psi	No. of Stages	Thread Size	Location	Thread Direction	Flow Range	No. of Flowmeters	Body	Seal	Diaphragm		Each
UNF Female Outlet × NGO Male Inlet



		580	Side	Right Hand	0 to 3,000	Two	5/8"-18	Side	Right Hand	0 to 18 scfh (Argon), 0 to 50 scfh (Helium)	1	Brass	PTFE	Neoprene	78595A492	0000000


		580	Side	Right Hand	0 to 3,000	Two	5/8"-18	Side	Right Hand	0 to 65 scfh (Argon), 0 to 200 scfh (Helium)	1	Brass	PTFE	Neoprene	78595A493	000000
		580	Side	Right Hand	0 to 4,000	Single	5/8"-18	Side	Right Hand	0 to 45 scfh (Argon), 0 to 140 scfh (Helium)	1	Brass	PTFE	Neoprene	78595A31	000000
		580	Side	Right Hand	0 to 4,000	Single	5/8"-18	Side	Right Hand	0 to 45 scfh (Argon), 0 to 140 scfh (Helium)	2	Brass	PTFE	Neoprene	7952A49	000000

Valve Union Fittings

		Each
Adapter	78595A49	000000

For Carbon Dioxide

Female Inlet ×

Female Outlet With

One Flowmeter

1 Flowmeter—Valves with one flowmeter are for one piece of equipment on a tank. The flowmeter has a single scale.

	Inlet					Outlet					Material
	CGA No.	Location	Thread Direction	Pressure Gauge Reading Range, psi	No. of Stages	Thread Size	Location	Thread Direction	Flow Range	No. of Flowmeters	Body	Seal	Diaphragm		Each
UNF Female Outlet × NGO Female Inlet



		320	Side	Right Hand	0 to 4,000	Single	5/8"-18	Side	Right Hand	0 scfh to 70 scfh	1	Brass	PTFE	Neoprene	78595A46	0000000

Valve Union Fittings

		Each
Adapter	78595A49	000000

For Helium and Hydrogen

Male Inlet × Female

Outlet With One

Flowmeter

1 Flowmeter—Valves with one flowmeter are for one piece of equipment on a tank. The flowmeter has a single scale.

	Inlet					Outlet					Material
	CGA No.	Location	Thread Direction	Pressure Gauge Reading Range, psi	No. of Stages	Thread Size	Location	Thread Direction	Flow Range	No. of Flowmeters	Body	Seal	Diaphragm		Each
UNF Female Outlet × NGO Male Inlet



		580	Side	Right Hand	0 to 4,000	Single	5/8"-18	Side	Right Hand	0 to 100 scfh (Helium), 0 to 140 scfh (Hydrogen)	1	Brass	PTFE	Neoprene	78595A499	0000000

Valve Union Fittings

		Each
Adapter	78595A49	000000

For Hydrogen

Female Inlet ×

Male Outlet With

One Flowmeter

1 Flowmeter—Valves with one flowmeter are for one piece of equipment on a tank. The flowmeter has a single scale.

	Inlet					Outlet					Material
	CGA No.	Location	Thread Direction	Pressure Gauge Reading Range, psi	No. of Stages	Thread Size	Location	Thread Direction	Flow Range	No. of Flowmeters	Body	Seal	Diaphragm		Each
UNF Male Outlet × NGO Female Inlet



		350	Side	Left Hand	0 to 3,000	Single	9/16"-18	Side	Left Hand	0 scfh to 40 scfh	1	Brass	PTFE	Neoprene	78595A498	0000000

Valve Union Fittings

		Each
Adapter	78595A49	000000

For Nitrogen

Male Inlet × Female

Outlet With One

Flowmeter

1 Flowmeter—Valves with one flowmeter are for one piece of equipment on a tank. The flowmeter has a single scale.

	Inlet					Outlet					Material
	CGA No.	Location	Thread Direction	Pressure Gauge Reading Range, psi	No. of Stages	Thread Size	Location	Thread Direction	Flow Range	No. of Flowmeters	Body	Seal	Diaphragm		Each
UNF Female Outlet × NGO Male Inlet



		580	Side	Right Hand	0 to 4,000	Single	5/8"-18	Side	Right Hand	0 scfh to 100 scfh	1	Brass	PTFE	Neoprene	78595A35	0000000

Valve Union Fittings

		Each
Adapter	78595A49	000000

Tank-Mount Pressure-Regulating Valves with Flowmeter for Inert Gas

Commonly used in TIG welding where gas flow/coverage is a concern, these valves measure the gas flow rate in addition to regulating pressure. They automatically reduce a high inlet pressure from compressed gas tanks to a lower, stable outlet pressure. All have Compressed Gas Association (CGA) numbered inlet fittings for secure connections to compressed gas tanks. Choose a valve with the same CGA number as your tank and other system components. Valves have a gauge to monitor the outlet flow rate and a second gauge to monitor inlet pressure from the tank. They are single stage and reduce pressure in one step, which causes the outlet pressure to fluctuate slightly as you empty the tank.

For Argon


Female Outlet × Male Inlet	Female Outlet × Male Inlet with Hose

	Inlet					Outlet					Material
	CGA No.	Location	Thread Direction	Pressure Gauge Reading Range, psi	No. of Stages	Thread Size	Location	Thread Direction	Flow Range, scfh	Flow Gauge Included	Body	Seal	Diaphragm	Includes	Temp. Range, ° F		Each
UNF Female Outlet × NGO Male Inlet



		580	Side	Right Hand	0 to 4,000	Single	5/8"-18	Side	Right Hand	0 to 60	Yes	Brass	PTFE	Neoprene	—	-20 to 120	7997A65	0000000


		580	Side	Right Hand	0 to 4,000	Single	5/8"-18	Side	Right Hand	0 to 60	Yes	Brass	PTFE	Neoprene	10-ft. long, 3/16" dia. hose with 5/8"-18 male fittings on both ends	-20 to 120	7997A67	000000
		580	Side	Right Hand	0 to 4,000	Single	5/8"-18	Side	Right Hand	0 to 100	Yes	Brass	PTFE	Neoprene	—	-20 to 120	7997A52	000000

For Carbon Dioxide


Female Outlet × Female Inlet	Female Outlet × Female Inlet with Hose

	Inlet					Outlet					Material
	CGA No.	Location	Thread Direction	Pressure Gauge Reading Range, psi	No. of Stages	Thread Size	Location	Thread Direction	Flow Range, scfh	Flow Gauge Included	Body	Seal	Diaphragm	Includes	Temp. Range, ° F		Each
UNF Female Outlet × NGO Female Inlet



		320	Side	Right Hand	0 to 4,000	Single	5/8"-18	Side	Right Hand	0 to 60	Yes	Brass	PTFE	Neoprene	—	-20 to 120	7997A66	0000000


		320	Side	Right Hand	0 to 4,000	Single	5/8"-18	Side	Right Hand	0 to 60	Yes	Brass	PTFE	Neoprene	10-ft. long, 3/16" dia. hose with 5/8"-18 male fittings on both ends	-20 to 120	7997A68	000000
		320	Side	Right Hand	0 to 4,000	Single	5/8"-18	Side	Right Hand	0 to 100	Yes	Brass	PTFE	Neoprene	—	-20 to 120	7997A51	000000

Panel-Mount Flowmeters for Gases

Monitor the flow rate of air and other gases from your instrument panel—these flowmeters have fittings on the back for panel mounting. They should be mounted vertically inline with your piping system, so gas flows up from the bottom. As gas passes through, it pushes an indicator up the scale, showing you the flow rate. With an acrylic body, they're completely clear, so you can inspect your gas’s color and clarity for any problems.

These flowmeters are calibrated with air but can be used with other gases. If you’re using these with a gas other than air, you’ll need to calculate the flow rate by multiplying the number shown on the scale by the specific-gravity conversion factor for your gas.

Choose a fitting material that is compatible with the gas you're running through your line.

Flowmeters with Flow-Control Knob


	Replacement Flowmeter Repair Kits

Flowmeters with a flow-control knob let you open and close the valve at the inlet to adjust the flow rate within the range.

PVC Fitting—PVC fittings work with a wide range of chemicals. However, they can crack from impact or when overtightened.

Brass Fitting—Brass fittings resist impact better than PVC fittings.

303 Stainless Steel Fitting—303 stainless steel fittings resist impact better than PVC fittings.

316 Stainless Steel Fitting—316 stainless steel fittings resist impact better than PVC fittings.

1/4 NPT Threaded Female Pipe × 1/2 NPT Threaded Male Pipe—Flowmeters with a female × male connection have internal NPT female threads and external NPT male threads.

Calibration Certificate Traceable to NIST—Flowmeters with a calibration certificate traceable to NIST states that the flowmeter has passed a test for accuracy.

	Flowmeters													Replacement Flowmeter Repair Kits
						Temp., ° F				Flowmeters		Calibration Certificate Traceable to NIST
	Flow	Overall Ht.	Ctr.-to-Ctr. Ht.	Accuracy	Max. Pressure @ Temp.	Min.	Max.	Seal Material	Mounting Position		Each		Each		Each
Acrylic Plastic Body with PVC Fittings







				1/4 NPT Threaded Female Pipe × 1/2 NPT Threaded Male Pipe

				4.2 scfh to 42 scfh	8 7/16"	6.437"	±3%	125 psi @ 70° F	33	100	EPM Rubber	Vertical	41945K118	0000000	———	0	———	0


				10 scfh to 100 scfh	8 7/16"	6.437"	±3%	125 psi @ 70° F	33	100	EPM Rubber	Vertical	41945K119	000000	———	0	———	0
				0.4 scfm to 4 scfm	6 7/8"	5"	±4%	125 psi @ 70° F	33	100	EPM Rubber	Vertical	41945K122	000000	———	0	———	0
				25 scfh to 175 scfh	8 7/16"	6.437"	±3%	125 psi @ 70° F	33	100	EPM Rubber	Vertical	41945K121	000000	———	0	———	0
				0.8 scfm to 8.2 scfm	6 7/8"	5"	±4%	100 psi @ 70° F	33	100	EPM Rubber	Vertical	41945K52	000000	———	0	6766T24	000000
				0.8 scfm to 8.2 scfm	8 7/16"	6.437"	±3%	100 psi @ 70° F	33	100	EPM Rubber	Vertical	41945K54	000000	———	0	6766T24	00000
				1.5 scfm to 15 scfm	6 7/8"	5"	±4%	125 psi @ 70° F	33	100	EPM Rubber	Vertical	41945K123	000000	———	0	———	0
				2.2 scfm to 22 scfm	8 7/16"	6.437"	±3%	100 psi @ 70° F	33	100	EPM Rubber	Vertical	41945K55	000000	———	0	6766T24	00000
				2.3 scfm to 23 scfm	6 7/8"	5"	±4%	100 psi @ 70° F	33	100	EPM Rubber	Vertical	41945K53	000000	———	0	6766T24	00000




						1/2 NPT Female

						0.8 scfm to 8 scfm	14 1/2"	12 1/4"	±2%	125 psi @ 70° F	33	100	EPM Rubber	Vertical	41945K124	000000	———	0	6766T26	00000


						1.4 scfm to 14.4 scfm	14 1/2"	12 1/4"	±2%	125 psi @ 70° F	33	100	EPM Rubber	Vertical	41945K125	000000	———	0	6766T26	00000
						2 scfm to 20 scfm	14 1/2"	12 1/4"	±2%	100 psi @ 70° F	33	100	EPM Rubber	Vertical	41945K82	000000	———	0	6766T26	00000
						4.2 scfm to 42 scfm	14 1/2"	12 1/4"	±2%	100 psi @ 70° F	33	100	EPM Rubber	Vertical	41945K83	000000	———	0	6766T26	00000




								1 NPT Female

								3 scfm to 25 scfm	10 7/8"	8 1/2"	±2%	100 psi @ 70° F	Not Rated	150	Buna-N	Vertical	2968K211	000000	———	0	———	0


								4 scfm to 50 scfm	10 7/8"	8 1/2"	±2%	100 psi @ 70° F	Not Rated	150	Buna-N	Vertical	2968K46	000000	———	0	———	0
								10 scfm to 100 scfm	10 7/8"	8 1/2"	±2%	100 psi @ 70° F	Not Rated	150	Buna-N	Vertical	2968K212	000000	———	0	———	0




										1 NPT Male

										4 scfm to 40 scfm	9 1/8"	6.437"	±4%	100 psi @ 70° F	33	100	EPM Rubber	Vertical	41945K78	000000	3281K118	0000000	6766T25	00000


										6 scfm to 60 scfm	9 1/8"	6.437"	±4%	100 psi @ 70° F	33	100	EPM Rubber	Vertical	41945K79	000000	3281K119	000000	6766T25	00000


										Acrylic Plastic Body with Brass Fittings







														1/8 NPT Female

0.1 scfh to 1 scfh	4"													3"	±5%	100 psi @ 70° F	Not Rated	150	Buna-N	Vertical	2968K201	00000	———	0	———	0


0.2 scfh to 2 scfh	4"													3"	±5%	100 psi @ 70° F	Not Rated	150	Buna-N	Vertical	2968K202	00000	———	0	———	0
0.4 scfh to 5 scfh	4"	3"												±5%	100 psi @ 70° F	Not Rated	150	Buna-N	Vertical	2968K203	00000	———	0	———	0
0.5 scfh to 10 scfh	4"	3"	±5%											100 psi @ 70° F	Not Rated	150	Buna-N	Vertical	2968K204	00000	———	0	———	0
4 scfh to 50 scfh	4"	3"	±5%											100 psi @ 70° F	Not Rated	150	Buna-N	Vertical	2968K205	00000	———	0	———	0
10 scfh to 100 scfh	4"	3"	±5%											100 psi @ 70° F	Not Rated	150	Buna-N	Vertical	2968K206	00000	———	0	———	0
20 scfh to 200 scfh	4"	3"	±5%											100 psi @ 70° F	Not Rated	150	Buna-N	Vertical	2968K207	00000	———	0	———	0




		1/4 NPT Female

		0.26 scfh to 2.6 scfh	4 1/8"											3"	±6%	125 psi @ 70° F	33	100	EPM Rubber	Vertical	41945K101	000000	———	0	———	0


		0.5 scfh to 5 scfh	4 1/8"											3"	±6%	125 psi @ 70° F	33	100	EPM Rubber	Vertical	41945K102	000000	———	0	———	0
		1 scfh to 10 scfh	4 1/8"											3"	±6%	125 psi @ 70° F	33	100	EPM Rubber	Vertical	41945K103	000000	———	0	———	0
		2 scfh to 20 scfh	4 1/8"											3"	±6%	100 psi @ 70° F	33	100	EPM Rubber	Vertical	41945K74	000000	3281K34	000000	6766T23	00000
		3 scfh to 30 scfh	4 1/8"											3"	±6%	100 psi @ 70° F	33	100	EPM Rubber	Vertical	41945K75	000000	3281K104	000000	6766T23	00000
		6 scfh to 60 scfh	4 1/8"	3"										±6%	100 psi @ 70° F	33	100	EPM Rubber	Vertical	41945K76	000000	3281K35	000000	6766T23	00000
		10 scfh to 100 scfh	4 1/8"	3"	±6%									100 psi @ 70° F	33	100	EPM Rubber	Vertical	41945K77	000000	3281K105	000000	6766T23	00000
		15 scfh to 180 scfh	4 1/8"	3"	±6%									100 psi @ 70° F	33	100	EPM Rubber	Vertical	41945K51	000000	3281K106	000000	6766T23	00000
		0.4 scfm to 4 scfm	4 1/8"	3"	±6%									100 psi @ 70° F	33	100	EPM Rubber	Vertical	41945K73	000000	3281K36	000000	6766T23	00000
		1 scfm to 10 scfm	6 5/8"	5 1/2"	±3%									100 psi @ 70° F	Not Rated	150	Buna-N	Vertical	2968K208	000000	———	0	———	0
		4 scfm to 20 scfm	6 5/8"	5 1/2"	±3%									100 psi @ 70° F	Not Rated	150	Buna-N	Vertical	2968K209	000000	———	0	———	0




				1/4 NPT Threaded Female Pipe × 1/2 NPT Threaded Male Pipe

				4.2 scfh to 42 scfh	8 7/16"									6.437"	±3%	125 psi @ 70° F	33	100	EPM Rubber	Vertical	41945K104	000000	———	0	———	0


				10 scfh to 100 scfh	8 7/16"	6.437"	±3%							125 psi @ 70° F	33	100	EPM Rubber	Vertical	41945K105	000000	———	0	———	0
				0.4 scfm to 4 scfm	6 7/8"	5"	±4%							125 psi @ 70° F	33	100	EPM Rubber	Vertical	41945K107	000000	———	0	6766T24	00000
				25 scfh to 175 scfh	8 7/16"	6.437"	±3%							125 psi @ 70° F	33	100	EPM Rubber	Vertical	41945K106	000000	———	0	———	0
				0.8 scfm to 8 scfm	6 7/8"	5"	±4%							125 psi @ 70° F	33	100	EPM Rubber	Vertical	41945K108	000000	———	0	6766T24	00000
				1.5 scfm to 15 scfm	6 7/8"	5"	±4%							125 psi @ 70° F	33	100	EPM Rubber	Vertical	41945K109	000000	———	0	6766T24	00000
				2.3 scfm to 23 scfm	6 7/8"	5"	±4%							125 psi @ 70° F	33	100	EPM Rubber	Vertical	41945K111	000000	———	0	6766T24	00000




						1/2 NPT Female

						0.8 scfm to 8 scfm	14 1/2"	12 1/4"	±2%					125 psi @ 70° F	33	100	EPM Rubber	Vertical	41945K112	000000	———	0	6766T26	00000


						1.4 scfm to 14.4 scfm	14 1/2"	12 1/4"	±2%					125 psi @ 70° F	33	100	EPM Rubber	Vertical	41945K113	000000	———	0	6766T26	00000
						2 scfm to 20 scfm	14 1/2"	12 1/4"	±2%					125 psi @ 70° F	33	100	EPM Rubber	Vertical	41945K114	000000	———	0	6766T26	00000
						5 scfm to 42 scfm	14 1/2"	12 1/4"	±2%					125 psi @ 70° F	33	100	EPM Rubber	Vertical	41945K115	000000	———	0	6766T26	00000




								1 NPT Male

								4 scfm to 40 scfm	9 1/8"	6.437"	±4%			125 psi @ 70° F	33	100	EPM Rubber	Vertical	41945K116	000000	———	0	6766T25	00000


								6 scfm to 60 scfm	9 1/8"	6.437"	±4%	125 psi @ 70° F		33	100	EPM Rubber	Vertical	41945K117	000000	———	0	6766T25	00000


								Acrylic Plastic Body with 303 Stainless Steel Fittings







1/8 NPT Female

0.1 scfh to 1 scfh	4"											3"	±5%	100 psi @ 70° F	Not Rated	150	Fluoroelastomer	Vertical	2968K213	000000	———	0	———	0


0.2 scfh to 2 scfh	4"											3"	±5%	100 psi @ 70° F	Not Rated	150	Fluoroelastomer	Vertical	2968K214	000000	———	0	———	0
0.4 scfh to 5 scfh	4"											3"	±5%	100 psi @ 70° F	Not Rated	150	Fluoroelastomer	Vertical	2968K215	000000	———	0	———	0
0.5 scfh to 10 scfh	4"											3"	±5%	100 psi @ 70° F	Not Rated	150	Fluoroelastomer	Vertical	2968K216	000000	———	0	———	0
4 scfh to 50 scfh	4"											3"	±5%	100 psi @ 70° F	Not Rated	150	Fluoroelastomer	Vertical	2968K217	000000	———	0	———	0
10 scfh to 100 scfh	4"											3"	±5%	100 psi @ 70° F	Not Rated	150	Fluoroelastomer	Vertical	2968K218	000000	———	0	———	0
20 scfh to 200 scfh	4"											3"	±5%	100 psi @ 70° F	Not Rated	150	Fluoroelastomer	Vertical	2968K219	000000	———	0	———	0




												1/4 NPT Female

												0.5 scfm to 5 scfm	6 5/8"	5 1/2"	±3%	100 psi @ 70° F	Not Rated	150	Fluoroelastomer	Vertical	2968K42	000000	———	0	———	0


		1 scfm to 10 scfm										6 5/8"	5 1/2"	±3%	100 psi @ 70° F	Not Rated	150	Fluoroelastomer	Vertical	2968K221	000000	———	0	———	0
		4 scfm to 20 scfm	6 5/8"									5 1/2"	±3%	100 psi @ 70° F	Not Rated	150	Fluoroelastomer	Vertical	2968K44	000000	———	0	———	0




												1 NPT Female

												3 scfm to 25 scfm	10 7/8"	8 1/2"	±2%	100 psi @ 70° F	Not Rated	150	Fluoroelastomer	Vertical	2968K222	000000	———	0	———	0


												4 scfm to 50 scfm	10 7/8"	8 1/2"	±2%	100 psi @ 70° F	Not Rated	150	Fluoroelastomer	Vertical	2968K223	000000	———	0	———	0
												10 scfm to 100 scfm	10 7/8"	8 1/2"	±2%	100 psi @ 70° F	Not Rated	150	Fluoroelastomer	Vertical	2968K224	000000	———	0	———	0


				Acrylic Plastic Body with 316 Stainless Steel Fittings







														1/4 NPT Female

														0.26 scfh to 2.6 scfh	4 1/4"	3"	±6%	125 psi @ 70° F	33	100	EPM Rubber	Vertical	41945K126	000000	———	0	———	0


						0.5 scfh to 5 scfh								4 1/4"	3"	±6%	125 psi @ 70° F	33	100	EPM Rubber	Vertical	41945K127	000000	———	0	———	0
						1 scfh to 10 scfh	4 1/4"							3"	±6%	125 psi @ 70° F	33	100	EPM Rubber	Vertical	41945K128	000000	———	0	———	0
						2 scfh to 20 scfh	4 1/8"							3"	±6%	100 psi @ 70° F	33	100	EPM Rubber	Vertical	41945K11	000000	3281K44	000000	6766T23	00000
						3 scfh to 30 scfh	4 1/8"							3"	±6%	100 psi @ 70° F	33	100	EPM Rubber	Vertical	41945K12	000000	3281K134	000000	6766T23	00000
						6 scfh to 60 scfh	4 1/8"							3"	±6%	100 psi @ 70° F	33	100	EPM Rubber	Vertical	41945K13	000000	3281K45	000000	6766T23	00000
						10 scfh to 100 scfh	4 1/8"							3"	±6%	100 psi @ 70° F	33	100	EPM Rubber	Vertical	41945K14	000000	3281K135	000000	6766T23	00000
						15 scfh to 180 scfh	4 1/8"							3"	±6%	100 psi @ 70° F	33	100	EPM Rubber	Vertical	41945K15	000000	3281K136	000000	6766T23	00000
						0.4 scfm to 4 scfm	4 1/8"							3"	±6%	100 psi @ 70° F	33	100	EPM Rubber	Vertical	41945K16	000000	3281K46	000000	6766T23	00000




								1/4 NPT Threaded Female Pipe × 1/2 NPT Threaded Male Pipe

								4.2 scfh to 42 scfh	8 7/16"					6.437"	±3%	125 psi @ 70° F	33	100	EPM Rubber	Vertical	41945K129	000000	———	0	———	0


								10 scfh to 100 scfh	8 7/16"	6.437"				±3%	125 psi @ 70° F	33	100	EPM Rubber	Vertical	41945K131	000000	———	0	———	0
								0.4 scfm to 4 scfm	6 7/8"	5"	±4%			125 psi @ 70° F	33	100	EPM Rubber	Vertical	41945K133	000000	———	0	———	0
								25 scfh to 175 scfh	8 7/16"	6.437"	±3%			125 psi @ 70° F	33	100	EPM Rubber	Vertical	41945K132	000000	———	0	———	0
								0.8 scfm to 8.2 scfm	6 7/8"	5"	±4%			100 psi @ 70° F	33	100	EPM Rubber	Vertical	41945K19	000000	3281K133	000000	6766T24	00000
								0.8 scfm to 8.2 scfm	8 7/16"	6.437"	±3%			100 psi @ 70° F	33	100	EPM Rubber	Vertical	41945K21	000000	———	0	6766T24	00000
								1.5 scfm to 15 scfm	6 7/8"	5"	±4%			125 psi @ 70° F	33	100	EPM Rubber	Vertical	41945K134	000000	———	0	———	0
								2.2 scfm to 22 scfm	8 7/16"	6.437"	±3%			100 psi @ 70° F	33	100	EPM Rubber	Vertical	41945K23	000000	———	0	6766T24	00000
								2.3 scfm to 23 scfm	6 7/8"	5"	±4%			100 psi @ 70° F	33	100	EPM Rubber	Vertical	41945K22	000000	3281K129	000000	6766T24	00000




1/2 NPT Female

0.8 scfm to 8 scfm	14 1/2"									12 1/4"	±2%			125 psi @ 70° F	33	100	EPM Rubber	Vertical	41945K135	000000	———	0	6766T26	00000


1.44 scfm to 14.4 scfm	14 1/2"									12 1/4"	±2%			125 psi @ 70° F	33	100	EPM Rubber	Vertical	41945K136	000000	———	0	6766T26	00000
2 scfm to 20 scfm	14 1/2"									12 1/4"	±2%			100 psi @ 70° F	33	100	EPM Rubber	Vertical	41945K17	000000	3281K125	000000	6766T26	00000
4.2 scfm to 42 scfm	14 1/2"									12 1/4"	±2%			100 psi @ 70° F	33	100	EPM Rubber	Vertical	41945K18	000000	3281K126	000000	6766T26	00000




		1 NPT Male

		4 scfm to 40 scfm	9 1/8"							6.437"	±4%			100 psi @ 70° F	33	100	EPM Rubber	Vertical	41945K24	000000	———	0	6766T25	00000


		6 scfm to 60 scfm	9 1/8"							6.437"	±4%			100 psi @ 70° F	33	100	EPM Rubber	Vertical	41945K25	000000	———	0	6766T25	00000

Flowmeters for Oxygen

To prevent contaminating your oxygen line, these flowmeters are specially cleaned and bagged. As oxygen flows through, it pushes an indicator up the scale, showing you the flow rate. Mount these flowmeters vertically inline with your oxygen system, so oxygen flows up from the bottom. The flow-control knob lets you open and close the valve at the inlet to adjust the flow rate within the range.

These flowmeters are calibrated with oxygen but can be used with other gases. If you’re using these with a gas other than oxygen, you’ll need to calculate the flow rate by multiplying the number shown on the scale by the specific-gravity conversion factor for your gas.

Cannot Be Sold to Canada—Flowmeters cannot be sold to Canada due to import regulations.

					Temp., ° F
	Flow, L/min	Overall Ht.	Accuracy	Max. Pressure @ Temp.	Min.	Max.	Seal Material	Mounting Position	Features	Cannot Be Sold To		Each
Polycarbonate Body with Brass Fittings







				1/8 NPT Threaded Female Pipe Inlet × Barbed Male Tube Outlet For 1/4" Tube ID

				0 to 30	7 1/4"	±10%	50 psi @ 70° F	-40	140	Fluoroelastomer	Vertical	Flow-Control Knob	Canada	3505K211	0000000


				0.25 to 3.5	7 1/4"	±10%	150 psi @ 72° F	-40	140	Fluoroelastomer	Vertical	Flow-Control Knob	Canada	3505K34	000000
				0.5 to 8	7 1/4"	±10%	150 psi @ 72° F	-40	140	Fluoroelastomer	Vertical	Flow-Control Knob	Canada	3505K35	000000
				0.5 to 15	7 1/4"	±10%	150 psi @ 72° F	-40	140	Fluoroelastomer	Vertical	Flow-Control Knob	Canada	3505K36	000000




						1/4 NPT Threaded Female Pipe Inlet × Barbed Male Tube Outlet For 1/4" Tube ID

						0 to 3.5	7 1/4"	±10%	50 psi @ 70° F	-40	140	Fluoroelastomer	Vertical	Flow-Control Knob	Canada	3505K212	000000


						0 to 8	7 1/4"	±10%	50 psi @ 70° F	-40	140	Fluoroelastomer	Vertical	Flow-Control Knob	Canada	3505K213	000000
						0 to 15	7 1/4"	±10%	50 psi @ 70° F	-40	140	Fluoroelastomer	Vertical	Flow-Control Knob	Canada	3505K214	000000
						0 to 30	7 1/4"	±10%	50 psi @ 70° F	-40	140	Fluoroelastomer	Vertical	Flow-Control Knob	Canada	3505K215	000000
						0 to 70	7 1/4"	±10%	50 psi @ 70° F	-40	140	Fluoroelastomer	Vertical	Flow-Control Knob	Canada	3505K216	000000

Impact-Resistant Panel-Mount Flowmeters for Gases


Polycarbonate Body, Female, Flowmeters with Flow-Control Knob	Glass Body, Female, Flowmeters with Flow-Control Knob

A case protects these flowmeters from blows and other impact as they measure the flow rate of gas. Install them in instrument panels using the fittings on the back. As your gas flows through, it pushes an indicator up the scale, showing you the flow rate. Mount these flowmeters vertically, so gas flows up from the bottom.

Choose a fitting material that is compatible with the gas you're running through your line.

Flow-Control Knob—Flowmeters with a flow-control knob let you open and close the inlet valve to adjust the flow rate within the range.

						Temp., ° F					Flowmeters with Flow-Control Knob
	Flow, scfh	Overall Ht.	Ctr.-to-Ctr. Ht.	Accuracy	Max. Pressure @ Temp.	Min.	Max.	Seal Material	Case Material	Mounting Position		Each
Polycarbonate Body with 303 Stainless Steel Fittings







				1/8 NPT Female

				0.1 to 1	4 13/16"	3"	±4%	100 psi @ 70° F	Not Rated	150	Fluoroelastomer	Polycarbonate	Vertical	5079K62	0000000


				0.2 to 2.5	4 13/16"	3"	±4%	100 psi @ 70° F	Not Rated	150	Fluoroelastomer	Polycarbonate	Vertical	5079K63	000000
				0.4 to 5	4 13/16"	3"	±4%	100 psi @ 70° F	Not Rated	150	Fluoroelastomer	Polycarbonate	Vertical	5079K64	000000
				1 to 11	4 13/16"	3"	±4%	100 psi @ 70° F	Not Rated	150	Fluoroelastomer	Polycarbonate	Vertical	5079K65	000000
				2 to 22	4 13/16"	3"	±4%	100 psi @ 70° F	Not Rated	150	Fluoroelastomer	Polycarbonate	Vertical	5079K66	000000
				4 to 60	4 13/16"	3"	±4%	100 psi @ 70° F	Not Rated	150	Fluoroelastomer	Polycarbonate	Vertical	5079K67	000000
				10 to 100	4 13/16"	3"	±4%	100 psi @ 70° F	Not Rated	150	Fluoroelastomer	Polycarbonate	Vertical	5079K68	000000
				20 to 200	4 13/16"	3"	±4%	100 psi @ 70° F	Not Rated	150	Fluoroelastomer	Polycarbonate	Vertical	5079K59	000000


				Glass Body with 316L Stainless Steel Fittings







								1/4 NPT Female

								0.04 to 0.42	6 1/16"	4 9/16"	±6%	200 psi @ 70° F	33	250	Fluoroelastomer	304 Stainless Steel	Vertical	5084K19	000000


								0.4 to 4	6 1/16"	4 9/16"	±6%	200 psi @ 70° F	33	250	Fluoroelastomer	304 Stainless Steel	Vertical	5084K22	000000
								0.82 to 8.2	6 1/16"	4 9/16"	±6%	200 psi @ 70° F	33	250	Fluoroelastomer	304 Stainless Steel	Vertical	5084K33	000000
								1 to 28	6 1/16"	4 9/16"	±6%	200 psi @ 70° F	33	250	Fluoroelastomer	304 Stainless Steel	Vertical	5084K55	000000
								5 to 90	6 1/16"	4 9/16"	±6%	200 psi @ 70° F	33	250	Fluoroelastomer	304 Stainless Steel	Vertical	5084K77	000000

Panel-Mount Flowmeters for Gases with Conversion Chart

Instead of a scale calibrated to a specific gas’ flow rate, these flowmeters measure in millimeters and include a conversion chart, so you can check the flow rate of water and multiple gases without any calculations. Install them in an instrument panel using the fittings on the back. They should be mounted vertically inline with your pipe system, so your gas flows up from the bottom. As gas flows through, it pushes an indicator up the scale. The flow control knob lets you open and close the inlet valve to adjust the flow rate within the range.

The conversion chart includes the flow rates for air, argon, carbon dioxide, helium, nitrogen, oxygen, and water. To calculate the flow rate of gases not included on the chart, multiply the flow rate for air by the specific-gravity conversion factor of your gas. Because you’re using gas, you’ll also need to account for temperature and pressure.

Choose a fitting material that is compatible with the gas you're running through your line.

Flow—To help you determine what measuring range is best, flow is given for air.

							Temp.
	Distance Measured, mm	Flow, cm³/min	Overall Ht.	Ctr.-to-Ctr. Ht.	Accuracy	Max. Pressure @ Temp.	Min.	Max., ° F	Seal Material	Case Material	Window Material	Mounting Position	Features		Each
Glass Body with 316 Stainless Steel Fittings







				1/8 NPT Female

				0 to 65	0 to 50	5 1/2"	4 1/2"	±5%	200 psi @ 70° F	Not Rated	200	Fluoroelastomer	Aluminum	Polycarbonate	Vertical	Flow-Control Knob, Rotating Scale	4112K92	0000000


				0 to 65	0 to 103	5 1/2"	4 1/2"	±5%	200 psi @ 70° F	Not Rated	200	Fluoroelastomer	Aluminum	Polycarbonate	Vertical	Flow-Control Knob, Rotating Scale	4112K94	000000
				0 to 65	0 to 400	5 1/2"	4 1/2"	±5%	200 psi @ 70° F	Not Rated	200	Fluoroelastomer	Aluminum	Polycarbonate	Vertical	Flow-Control Knob, Rotating Scale	4112K96	000000
				0 to 65	0 to 900	5 1/2"	4 1/2"	±5%	200 psi @ 70° F	Not Rated	200	Fluoroelastomer	Aluminum	Polycarbonate	Vertical	Flow-Control Knob, Rotating Scale, Water Flow Scale (0-18.2 ccm)	4112K74	000000
				0 to 65	0 to 2,580	5 1/2"	4 1/2"	±5%	200 psi @ 70° F	Not Rated	200	Fluoroelastomer	Aluminum	Polycarbonate	Vertical	Flow-Control Knob, Rotating Scale, Water Flow Scale (0-55 ccm)	4112K75	000000
				0 to 65	0 to 3,840	5 1/2"	4 1/2"	±5%	200 psi @ 70° F	Not Rated	200	Fluoroelastomer	Aluminum	Polycarbonate	Vertical	Flow-Control Knob, Rotating Scale, Water Flow Scale (0-90 ccm)	4112K76	000000
				0 to 65	0 to 6,000	5 1/2"	4 1/2"	±5%	200 psi @ 70° F	Not Rated	200	Fluoroelastomer	Aluminum	Polycarbonate	Vertical	Flow-Control Knob, Rotating Scale, Water Flow Scale (0-130 ccm)	4112K77	000000
				0 to 65	0 to 10,100	5 1/2"	4 1/2"	±5%	200 psi @ 70° F	Not Rated	200	Fluoroelastomer	Aluminum	Polycarbonate	Vertical	Flow-Control Knob, Rotating Scale, Water Flow Scale (0-235 ccm)	4112K78	000000
				0 to 65	0 to 15,750	5 1/2"	4 1/2"	±5%	200 psi @ 70° F	Not Rated	200	Fluoroelastomer	Aluminum	Polycarbonate	Vertical	Flow-Control Knob, Rotating Scale, Water Flow Scale (0-375 ccm)	4112K79	000000
				0 to 65	0 to 23,640	5 1/2"	4 1/2"	±5%	200 psi @ 70° F	Not Rated	200	Fluoroelastomer	Aluminum	Polycarbonate	Vertical	Flow-Control Knob, Rotating Scale, Water Flow Scale (0-570 ccm)	4112K81	000000
				0 to 150	0 to 50	10"	8 7/8"	±3%	200 psi @ 70° F	Not Rated	200	Fluoroelastomer	Aluminum	Polycarbonate	Vertical	Flow-Control Knob, Rotating Scale	4112K98	000000


				0 to 150	0 to 103	10"	8 7/8"	±3%	200 psi @ 70° F	Not Rated	200	Fluoroelastomer	Aluminum	Polycarbonate	Vertical	Flow-Control Knob, Rotating Scale	4112K831	000000
				0 to 150	0 to 400	10"	8 7/8"	±3%	200 psi @ 70° F	Not Rated	200	Fluoroelastomer	Aluminum	Polycarbonate	Vertical	Flow-Control Knob, Rotating Scale	4112K841	000000
				0 to 150	0 to 855	10"	8 7/8"	±3%	200 psi @ 70° F	Not Rated	200	Fluoroelastomer	Aluminum	Polycarbonate	Vertical	Flow-Control Knob, Rotating Scale, Water Flow Scale (0-18 ccm)	4112K85	000000
				0 to 150	0 to 2,290	10"	8 7/8"	±3%	200 psi @ 70° F	Not Rated	200	Fluoroelastomer	Aluminum	Polycarbonate	Vertical	Flow-Control Knob, Rotating Scale, Water Flow Scale (0-50 ccm)	4112K86	000000
				0 to 150	0 to 3,425	10"	8 7/8"	±3%	200 psi @ 70° F	Not Rated	200	Fluoroelastomer	Aluminum	Polycarbonate	Vertical	Flow-Control Knob, Rotating Scale, Water Flow Scale (0-75 ccm)	4112K87	000000
				0 to 150	0 to 9,180	10"	8 7/8"	±3%	200 psi @ 70° F	Not Rated	200	Fluoroelastomer	Aluminum	Polycarbonate	Vertical	Flow-Control Knob, Rotating Scale, Water Flow Scale (0-215 ccm)	4112K88	000000
				0 to 150	0 to 23,740	10"	8 7/8"	±3%	200 psi @ 70° F	Not Rated	200	Fluoroelastomer	Aluminum	Polycarbonate	Vertical	Flow-Control Knob, Rotating Scale, Water Flow Scale (0-565 ccm)	4112K89	000000


				Glass Body with Aluminum Fittings







								1/8 NPT Female

								0 to 65	0 to 50	5 1/2"	4 1/2"	±5%	200 psi @ 70° F	Not Rated	200	Buna-N	Aluminum	Polycarbonate	Vertical	Flow-Control Knob, Rotating Scale	4112K91	000000


								0 to 65	0 to 103	5 1/2"	4 1/2"	±5%	200 psi @ 70° F	Not Rated	200	Buna-N	Aluminum	Polycarbonate	Vertical	Flow-Control Knob, Rotating Scale	4112K93	000000
								0 to 65	0 to 400	5 1/2"	4 1/2"	±5%	200 psi @ 70° F	Not Rated	200	Buna-N	Aluminum	Polycarbonate	Vertical	Flow-Control Knob, Rotating Scale	4112K95	000000
								0 to 65	0 to 900	5 1/2"	4 1/2"	±5%	200 psi @ 70° F	Not Rated	200	Buna-N	Aluminum	Polycarbonate	Vertical	Flow-Control Knob, Rotating Scale, Water Flow Scale (0-18.2 ccm)	4112K34	000000
								0 to 65	0 to 2,580	5 1/2"	4 1/2"	±5%	200 psi @ 70° F	Not Rated	200	Buna-N	Aluminum	Polycarbonate	Vertical	Flow-Control Knob, Rotating Scale, Water Flow Scale (0-55 ccm)	4112K35	000000
								0 to 65	0 to 3,840	5 1/2"	4 1/2"	±5%	200 psi @ 70° F	Not Rated	200	Buna-N	Aluminum	Polycarbonate	Vertical	Flow-Control Knob, Rotating Scale, Water Flow Scale (0-90 ccm)	4112K36	000000
								0 to 65	0 to 6,000	5 1/2"	4 1/2"	±5%	200 psi @ 70° F	Not Rated	200	Buna-N	Aluminum	Polycarbonate	Vertical	Flow-Control Knob, Rotating Scale, Water Flow Scale (0-130 ccm)	4112K37	000000
								0 to 65	0 to 10,100	5 1/2"	4 1/2"	±5%	200 psi @ 70° F	Not Rated	200	Buna-N	Aluminum	Polycarbonate	Vertical	Flow-Control Knob, Rotating Scale, Water Flow Scale (0-235 ccm)	4112K38	000000
								0 to 65	0 to 15,750	5 1/2"	4 1/2"	±5%	200 psi @ 70° F	Not Rated	200	Buna-N	Aluminum	Polycarbonate	Vertical	Flow-Control Knob, Rotating Scale, Water Flow Scale (0-375 ccm)	4112K39	000000
								0 to 65	0 to 23,640	5 1/2"	4 1/2"	±5%	200 psi @ 70° F	Not Rated	200	Buna-N	Aluminum	Polycarbonate	Vertical	Flow-Control Knob, Rotating Scale, Water Flow Scale (0-570 ccm)	4112K41	000000
								0 to 150	0 to 50	10"	8 7/8"	±3%	200 psi @ 70° F	Not Rated	200	Buna-N	Aluminum	Polycarbonate	Vertical	Flow-Control Knob, Rotating Scale	4112K97	000000


								0 to 150	0 to 103	10"	8 7/8"	±3%	200 psi @ 70° F	Not Rated	200	Buna-N	Aluminum	Polycarbonate	Vertical	Flow-Control Knob, Rotating Scale	4112K431	000000
								0 to 150	0 to 400	10"	8 7/8"	±3%	200 psi @ 70° F	Not Rated	200	Buna-N	Aluminum	Polycarbonate	Vertical	Flow-Control Knob, Rotating Scale	4112K441	000000
								0 to 150	0 to 855	10"	8 7/8"	±3%	200 psi @ 70° F	Not Rated	200	Buna-N	Aluminum	Polycarbonate	Vertical	Flow-Control Knob, Rotating Scale, Water Flow Scale (0-18 ccm)	4112K45	000000
								0 to 150	0 to 2,290	10"	8 7/8"	±3%	200 psi @ 70° F	Not Rated	200	Buna-N	Aluminum	Polycarbonate	Vertical	Flow-Control Knob, Rotating Scale, Water Flow Scale (0-50 ccm)	4112K46	000000
								0 to 150	0 to 3,425	10"	8 7/8"	±3%	200 psi @ 70° F	Not Rated	200	Buna-N	Aluminum	Polycarbonate	Vertical	Flow-Control Knob, Rotating Scale, Water Flow Scale (0-75 ccm)	4112K47	000000
								0 to 150	0 to 9,180	10"	8 7/8"	±3%	200 psi @ 70° F	Not Rated	200	Buna-N	Aluminum	Polycarbonate	Vertical	Flow-Control Knob, Rotating Scale, Water Flow Scale (0-215 ccm)	4112K48	000000
0 to 150								0 to 23,740	10"	8 7/8"	±3%	200 psi @ 70° F	Not Rated	200	Buna-N	Aluminum	Polycarbonate	Vertical	Flow-Control Knob, Rotating Scale, Water Flow Scale (0-565 ccm)	4112K49	000000