Panel Flowmeters | McMaster-Carr

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25 Products

High-Temperature Panel-Mount Flowmeters


Male Flowmeters	Male, Flowmeters with Flow-Control Knob

Install these flowmeters in an instrument panel to measure the flow rate of hot water and other liquids reaching up to 212° F. They should be mounted vertically, so liquid flows up from the bottom. As liquid flows through, it pushes an indicator up the scale, showing you the flow rate.

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

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.

	Flow						Temp., ° F				Flowmeters		Flowmeters with Flow-Control Knob
	US Customary, gpm	Metric, L/min	Overall Ht.	Ctr.-to-Ctr. Ht.	Accuracy	Max. Pressure @ Temp.	Min.	Max.	Seal Material	Mounting Position		Each		Each
Polysulfone Body with Polysulfone Fittings







				3/8 NPT Male

				0.025 to 0.25	0.1 to 1	7"	6"	±4%	175 psi @ 70° F	33	212	Fluoroelastomer	Vertical	4215K66	0000000	4215K76	0000000


				0.1 to 1	0.4 to 4	7"	6"	±4%	175 psi @ 70° F	33	212	Fluoroelastomer	Vertical	4215K67	000000	4215K77	000000
				0.2 to 2	0.75 to 7.5	7"	6"	±4%	175 psi @ 70° F	33	212	Fluoroelastomer	Vertical	4215K68	000000	4215K78	000000
				0.5 to 5	1.8 to 18	7"	6"	±4%	175 psi @ 70° F	33	212	Fluoroelastomer	Vertical	4215K69	000000	4215K79	000000




						1/2 NPT Male

						0.025 to 0.25	0.1 to 1	7"	6"	±4%	175 psi @ 70° F	33	212	Fluoroelastomer	Vertical	4215K61	000000	4215K71	000000


						0.1 to 1	0.4 to 4	7"	6"	±4%	175 psi @ 70° F	33	212	Fluoroelastomer	Vertical	4215K62	000000	4215K72	000000
						0.2 to 2	0.75 to 7.5	7"	6"	±4%	175 psi @ 70° F	33	212	Fluoroelastomer	Vertical	4215K63	000000	4215K73	000000
						0.5 to 5	1.8 to 18	7"	6"	±4%	175 psi @ 70° F	33	212	Fluoroelastomer	Vertical	4215K64	000000	4215K74	000000




								3/4 NPT Male

								1 to 10	5 to 37.5	8"	6 13/16"	±4%	175 psi @ 70° F	33	212	Fluoroelastomer	Vertical	4215K65	000000	4215K75	000000

Panel-Mount Flow Sights for Water, Oil, and Inert Gas

The included mounting ring lets you install these sights in instrument panels. They have three ball indicators that bounce in the domed-top window to show flow in your line.

	Flow Sights																Repair Kits
					Window							Indicator
	Pipe Size	Thread Type	Gender	Temp. Range, ° F	Dia.	Type	End-to-End Lg.	Ht.	Max. Pressure @ Temp.	Panel Cutout Dia.	Direction of Flow	No. of	Material	For Use With		Each		Each
Ball Indicator







				Brass Body

				1/4	NPT	Female	35 to 120	1 5/8"	Domed Top	3 1/8"	2 1/8"	150 psi @ 70° F	2 3/8"	Bottom to Top, Left to Right, Right to Left, Top to Bottom	3	White Polyethylene White Polyethylene Green Acrylic Plastic	Water, Oil, Inert Gas	4202K12	0000000	4202K216	000000


				3/8	NPT	Female	35 to 120	1 5/8"	Domed Top	3 1/8"	2 1/8"	150 psi @ 70° F	2 3/8"	Bottom to Top, Left to Right, Right to Left, Top to Bottom	3	White Polyethylene White Polyethylene Green Acrylic Plastic	Water, Oil, Inert Gas	4202K14	000000	4202K216	00000
				1/2	NPT	Female	35 to 120	1 5/8"	Domed Top	3 1/8"	2 1/8"	150 psi @ 70° F	2 3/8"	Bottom to Top, Left to Right, Right to Left, Top to Bottom	3	White Polyethylene White Polyethylene Green Acrylic Plastic	Water, Oil, Inert Gas	4202K16	000000	4202K216	00000
				3/4	NPT	Female	35 to 120	1 5/8"	Domed Top	3 1/8"	2 1/8"	150 psi @ 70° F	2 3/8"	Bottom to Top, Left to Right, Right to Left, Top to Bottom	3	White Polyethylene White Polyethylene Green Acrylic Plastic	Water, Oil, Inert Gas	4202K18	000000	4202K552	00000
				1	NPT	Female	35 to 120	1 5/8"	Domed Top	3 1/8"	2 5/8"	150 psi @ 70° F	2 3/8"	Bottom to Top, Left to Right, Right to Left, Top to Bottom	3	White Polyethylene White Polyethylene Green Acrylic Plastic	Water, Oil, Inert Gas	4202K19	000000	4202K552	00000