Natural Gas Traps | McMaster-Carr

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64 Products

Medium-Pressure Stainless Steel Y-Strainers

316 stainless steel gives these strainers excellent corrosion resistance. Use them in medium-pressure applications to capture debris in your pipeline and protect sensitive equipment. Strainers have a threaded drain with a plug that provides access to the screen without disconnecting your line.

With Female Threaded Pipe Fitting Connections—Threaded Drain with Plug

Image of Product. Front orientation. Strainers. Medium-Pressure Stainless Steel Y-Strainers.

	Strainers																	Replacement Screens
					Temp. Range, ° F
	Pipe Size	Thread Type	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.	Min.	Max.	Lg.	Ht.	Plug Pipe Size	Screen Material	Screen Top OD	Screen Bottom OD	Screen Lg.	Choose a Screen Mesh Size	Choose a Screen Opening Size		Each		Each
For Use With Water, Oil, Inert Gas, Natural Gas, Diesel Fuel, and Steam







				With Mesh Screen

				1/4	NPT	1,400 psi @ 70° F	600 psi @ 1,125° F	35	1,125	2 1/2"	2 1/2"	3/8	304 Stainless Steel	3/4"	7/8"	1 7/16"	20 × 20, 40 × 40, 100 × 100	—	4745K51	0000000	4745K71	000000


				3/8	NPT	1,400 psi @ 70° F	600 psi @ 1,125° F	35	1,125	3 7/8"	3 3/8"	1/2	304 Stainless Steel	7/8"	1 1/8"	2 3/8"	20 × 20, 40 × 40, 100 × 100	—	4745K52	000000	4745K72	00000
				1/2	NPT	1,400 psi @ 70° F	600 psi @ 1,125° F	35	1,125	3 7/8"	3 1/2"	1/2	304 Stainless Steel	7/8"	1 1/8"	2 3/8"	20 × 20, 40 × 40, 100 × 100	—	4745K53	000000	4745K73	00000
				3/4	NPT	1,400 psi @ 70° F	600 psi @ 1,125° F	35	1,125	4"	3 3/4"	1/2	304 Stainless Steel	7/8"	1 1/8"	2 3/8"	20 × 20, 40 × 40, 100 × 100	—	4745K54	000000	4745K74	00000
				1	NPT	1,400 psi @ 70° F	600 psi @ 1,125° F	35	1,125	5"	5"	3/4	304 Stainless Steel	1 3/8"	1 5/8"	3 1/16"	20 × 20, 40 × 40, 100 × 100	—	4745K55	000000	4745K75	00000
				1 1/2	NPT	1,400 psi @ 70° F	600 psi @ 1,125° F	35	1,125	5 5/8"	6 3/8"	1	304 Stainless Steel	1 3/4"	2 1/8"	4 1/8"	20 × 20, 40 × 40, 100 × 100	—	4745K57	000000	4745K77	00000
				2	NPT	1,400 psi @ 70° F	600 psi @ 1,125° F	35	1,125	8"	7 1/4"	1	304 Stainless Steel	2 1/4"	2 9/16"	5 1/16"	20 × 20, 40 × 40, 100 × 100	—	4745K58	00000000	4745K78	000000




						With Perforated Screen

						1/4	NPT	1,400 psi @ 70° F	600 psi @ 1,125° F	35	1,125	2 1/2"	2 1/2"	3/8	304 Stainless Steel	3/4"	7/8"	1 7/16"	—	1/32", 1/16", 1/8"	4745K901	000000	4745K201	00000


						3/8	NPT	1,400 psi @ 70° F	600 psi @ 1,125° F	35	1,125	3 7/8"	3 3/8"	1/2	304 Stainless Steel	7/8"	1 1/8"	2 3/8"	—	1/32", 1/16", 1/8"	4745K911	000000	4745K211	00000
						1/2	NPT	1,400 psi @ 70° F	600 psi @ 1,125° F	35	1,125	3 7/8"	3 1/2"	1/2	304 Stainless Steel	7/8"	1 1/8"	2 3/8"	—	1/32", 1/16", 1/8"	4745K921	000000	4745K221	00000
						3/4	NPT	1,400 psi @ 70° F	600 psi @ 1,125° F	35	1,125	4"	3 3/4"	1/2	304 Stainless Steel	7/8"	1 1/8"	2 3/8"	—	1/32", 1/16", 1/8"	4745K931	000000	4745K231	00000
						1	NPT	1,400 psi @ 70° F	600 psi @ 1,125° F	35	1,125	5"	5"	3/4	304 Stainless Steel	1 3/8"	1 5/8"	3 1/16"	—	1/32", 1/16", 1/8"	4745K941	000000	4745K241	00000
						1 1/2	NPT	1,400 psi @ 70° F	600 psi @ 1,125° F	35	1,125	5 5/8"	6 3/8"	1	304 Stainless Steel	1 3/4"	2 1/8"	4 1/8"	—	1/32", 1/16", 1/8"	4745K961	000000	4745K261	00000
						2	NPT	1,400 psi @ 70° F	600 psi @ 1,125° F	35	1,125	8"	7 1/4"	1	304 Stainless Steel	2 1/4"	2 9/16"	5 1/16"	—	1/32", 1/16", 1/8"	4745K971	00000000	4745K271	00000

Low-Pressure Galvanized Iron and Steel Threaded Pipe Traps

The galvanized finish on these traps provides fair corrosion resistance. Traps are for use in low-pressure applications.

180° Bend Connectors

Image of Product. Front orientation. Pipe Traps. Low-Pressure Galvanized Iron and Steel Threaded Pipe Traps.

180° bend connectors are also known as U-bends.

							For Pipe		For Flange
	Pipe Size	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.	Material	For Use With	Pressure Class	Schedule	Material	Class	Material	Specs. Met	Certification		Each
NPT Female



		3/4	150 psi @ 72° F	150 psi @ 350° F	Galvanized Iron	Air, Natural Gas, Oil, Steam, Water	150	40	Galvanized Steel	150	Galvanized Steel	ASME B1.20.1, ASME B16.3, ASTM A197	UL Listed	4638K299	000000


		1	150 psi @ 72° F	150 psi @ 350° F	Galvanized Iron	Air, Natural Gas, Oil, Steam, Water	150	40	Galvanized Steel	150	Galvanized Steel	ASME B1.20.1, ASME B16.3, ASTM A197	UL Listed	4638K385	00000
		1 1/2	150 psi @ 72° F	150 psi @ 350° F	Galvanized Iron	Air, Natural Gas, Oil, Steam, Water	150	40	Galvanized Steel	150	Galvanized Steel	ASME B1.20.1, ASME B16.3, ASTM A197	UL Listed	4638K556	000000
		2	150 psi @ 72° F	150 psi @ 350° F	Galvanized Iron	Air, Natural Gas, Oil, Steam, Water	150	40	Galvanized Steel	150	Galvanized Steel	ASME B1.20.1, ASME B16.3, ASTM A197	UL Listed	4638K557	000000

Low-Pressure Iron and Steel Threaded Pipe Traps

Use these traps for low-pressure applications in noncorrosive environments.

180° Bend Connectors

Image of Product. Front orientation. Pipe Traps. Low-Pressure Iron and Steel Threaded Pipe Traps.

180° bend connectors are also known as U-bends.

NPT Thread—Connectors with NPT threads are threaded on both ends.

							For Pipe
	Pipe Size	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.	Material	For Use With	Pressure Class	Schedule	Material	For Flange Material	Specs. Met	Certification		Each
NPT Female



		1/2	150 psi @ 72° F	150 psi @ 350° F	Iron	Air, Natural Gas, Oil, Steam, Water	150	40	Steel	Iron, Steel	ASME B1.20.1, ASME B16.3	UL Listed	44605K563	000000


		3/4	150 psi @ 72° F	150 psi @ 350° F	Iron	Air, Natural Gas, Oil, Steam, Water	150	40	Steel	Iron, Steel	ASME B1.20.1, ASME B16.3	UL Listed	44605K564	00000
		1	150 psi @ 72° F	150 psi @ 350° F	Iron	Air, Natural Gas, Oil, Steam, Water	150	40	Steel	Iron, Steel	ASME B1.20.1, ASME B16.3	—	44605K565	00000
		1 1/4	150 psi @ 72° F	150 psi @ 350° F	Iron	Air, Natural Gas, Oil, Steam, Water	150	40	Steel	Iron, Steel	ASME B1.20.1, ASME B16.3	UL Listed	44605K566	00000
		1 1/2	150 psi @ 72° F	150 psi @ 350° F	Iron	Air, Natural Gas, Oil, Steam, Water	150	40	Steel	Iron, Steel	ASME B1.20.1, ASME B16.3	UL Listed	44605K567	000000
		2	150 psi @ 72° F	150 psi @ 350° F	Iron	Air, Natural Gas, Oil, Steam, Water	150	40	Steel	Iron, Steel	ASME B1.20.1, ASME B16.3	UL Listed	44605K568	000000

Standard-Wall Butt-Weld Steel Unthreaded Pipe Traps

Butt-weld traps allow for a smooth connection that provides maximum flow. They have beveled ends that, when flush to pipe, create a trough for a strong, permanent weld. Traps are also known as Schedule 40. They are for use in noncorrosive environments.

180° Bend Connectors

Image of Product. Front orientation. Pipe Traps. Standard-Wall Butt-Weld Steel Unthreaded Pipe Traps.

180° bend connectors are also known as U-bends.

						For Pipe		For Flange
Pipe Size	Wall Thk.	Construction	Material	For Use With	Pipe Schedule	Schedule	Material	Class	Material	Specs. Met		Each



	3/4	0.113"	Seamless	Steel	Air, Natural Gas, Oil, Steam, Water	40	40	Steel	150	Steel	ASME B16.9, ASTM A234	43425K123	0000000


	1	0.133"	Seamless	Steel	Air, Natural Gas, Oil, Steam, Water	40	40	Steel	150	Steel	ASME B16.9, ASTM A234	43425K133	000000
	1 1/4	0.14"	Seamless	Steel	Air, Natural Gas, Oil, Steam, Water	40	40	Steel	150	Steel	ASME B16.9, ASTM A234	43425K143	000000
	1 1/2	0.145"	Seamless	Steel	Air, Natural Gas, Oil, Steam, Water	40	40	Steel	150	Steel	ASME B16.9, ASTM A234	43425K153	000000
	2	0.154"	Seamless	Steel	Air, Natural Gas, Oil, Steam, Water	40	40	Steel	150	Steel	ASME B16.9, ASTM A234	43425K163	000000
	2 1/2	0.203"	Seamless	Steel	Air, Natural Gas, Oil, Steam, Water	40	40	Steel	150	Steel	ASME B16.9, ASTM A234	43425K173	000000
	3	0.216"	Seamless	Steel	Air, Natural Gas, Oil, Steam, Water	40	40	Steel	150	Steel	ASME B16.9, ASTM A234	43425K183	000000
	4	0.237"	Seamless	Steel	Air, Natural Gas, Oil, Steam, Water	40	40	Steel	150	Steel	ASME B16.9, ASTM A234	43425K213	000000
	6	0.28"	Seamless	Steel	Air, Natural Gas, Oil, Steam, Water	40	40	Steel	150	Steel	ASME B16.9, ASTM A234	43425K233	000000

ASME-Code Metal Basket Strainers

These basket strainers are constructed for use with boilers and pressure vessels. They are 316 stainless steel for excellent corrosion resistance. Commonly used in high-flow industrial processes, they hold more debris than all of our other strainers. Use them to protect valves, pumps, and nozzles from particles in your pipeline. Strainers have a threaded drain with a plug for easy cleaning.

	Strainers														Replacement Baskets
	Pipe Size	Thread Type	Max. Pressure @ Temp.	Temp. Range, ° F	Lg.	Ht.	Material	Gasket Material	Basket Material	Specs. Met	Certification	Choose a Basket Opening Size		Each		Each
For Use With Water, Oil, Inert Gas, Natural Gas, and Diesel Fuel



		1/2	NPT	200 psi @ 100° F	-20 to 150	4 9/16"	6 1/2"	316 Stainless Steel	Fluoroelastomer	304 Stainless Steel	ASME B16.5	ASME BPVC.VIII	1/16", 1/8"	9874K11	0000000	9874K21	0000000


		3/4	NPT	200 psi @ 100° F	-20 to 150	4 9/16"	6 1/2"	316 Stainless Steel	Fluoroelastomer	304 Stainless Steel	ASME B16.5	ASME BPVC.VIII	1/16", 1/8"	9874K12	000000	9874K21	000000
		1	NPT	200 psi @ 100° F	-20 to 150	5 5/16"	7 7/16"	316 Stainless Steel	Fluoroelastomer	304 Stainless Steel	ASME B16.5	ASME BPVC.VIII	1/16", 1/8"	9874K13	000000	9874K22	000000
		1 1/2	NPT	200 psi @ 100° F	-20 to 150	6 5/16"	9 1/2"	316 Stainless Steel	Fluoroelastomer	304 Stainless Steel	ASME B16.5	ASME BPVC.VIII	1/16", 1/8"	9874K14	00000000	9874K23	000000
		2	NPT	200 psi @ 100° F	-20 to 150	8 1/4"	11 1/2"	316 Stainless Steel	Fluoroelastomer	304 Stainless Steel	ASME B16.5	ASME BPVC.VIII	1/16", 1/8"	9874K15	00000000	9874K24	000000

Thick-Wall Butt-Weld Steel Unthreaded Pipe Traps

With thicker, stronger walls than our standard-wall butt-weld pipe traps, these traps stand up to your high strength applications. Weld them flush against pipe for a smooth connection that permits maximum flow. These traps have beveled ends that create a trough for a leak-resistant, permanent weld. Made of steel, they’re for use in noncorrosive environments.

180° Bend Connectors

Image of Product. Front orientation. Pipe Traps. Thick-Wall Butt-Weld Steel Unthreaded Pipe Traps.

180° bend connectors are also known as U-bends.

						For Pipe		For Flange
Pipe Size	Wall Thk.	Construction	Material	For Use With	Pipe Schedule	Schedule	Material	Class	Material	Specs. Met		Each



	1 1/2	0.2"	Seamless	Steel	Air, Natural Gas, Oil, Steam, Water	80	80	Steel	300	Steel	ASTM A234	4981T85	0000000


	2	0.218"	Seamless	Steel	Air, Natural Gas, Oil, Steam, Water	80	80	Steel	300	Steel	ASTM A234	4981T86	000000
	2 1/2	0.276"	Seamless	Steel	Air, Natural Gas, Oil, Steam, Water	80	80	Steel	300	Steel	ASTM A234	4981T87	000000
	3	0.3"	Seamless	Steel	Air, Natural Gas, Oil, Steam, Water	80	80	Steel	300	Steel	ASTM A234	4981T88	000000
	4	0.337"	Seamless	Steel	Air, Natural Gas, Oil, Steam, Water	80	80	Steel	300	Steel	ASTM A234	4981T89	000000
	6	0.432"	Seamless	Steel	Air, Natural Gas, Oil, Steam, Water	80	80	Steel	300	Steel	ASTM A234	4981T67	000000

Sediment Traps for Natural Gas

Get ahead of your water heater maintenance—these traps catch debris from natural gas lines before it can enter the tank. Also called a drip leg, these traps are often required by building standards. They’re plated in zinc, so they’re mildly corrosion resistant.

Install them after your shutoff valve and as close to the water heater inlet as possible. To empty the trap, unscrew the cap and dispose of any debris.

	Outlet Ht.	Ht.	Wd.	Dp.	Max. Temp., ° F	Features		Each
Threaded NPT Male Inlet and Outlet







	Zinc-Plated Carbon Steel

	3	1/2	1/2	4"	7 3/4"	4 1/4"	1 1/4"	600	Threaded Drain Cap	6551N11	000000


	3	3/4	3/4	4"	7 3/4"	4 1/4"	1 1/4"	600	Threaded Drain Cap	6551N12	00000