Stainless Steel Pop-Safety Valves

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500 psi to 999 psi

2,000 psi to 3,999 psi

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3,000 psi to 3,999 psi

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3/4

1 1/4

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Export Control Classification Number (ECCN)

2B999

EAR99

DFARS Specialty Metals

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12 Products

Corrosion-Resistant ASME-Code Fast-Acting Pressure-Relief Valves for Air and Inert Gas

For corrosion resistance in wet conditions and harsh environments, these valves have a 303 stainless steel body. They spring fully open at the set pressure and remain open until the system pressure is restored below the set pressure. All meet ASME Code Section VIII for use with air and inert gas pressure vessels. Valves have a vented relief port to exhaust discharge directly.

NPT Male Inlet and Relief Vent

Inlet
Pipe Size	Location	Max. Pressure, psi	Relief Port Location	Shape	Overall Ht.	For Use With	Temp. Range, ° F	Test Mechanism	Valve Type	Certification	Choose a Set Pressure, psi		Each







			303 Stainless Steel Body and Seal

			1/4	Bottom	300	Side	90° Elbow	3 1/8"	Air, Inert Gas	-40 to 400	Ring	Pop Safety	ASME BPVC.VIII	25 , 50 , 75 , 100 , 125 , 150 , 175 , 200 , 225 , 250 , 275 , 300	98905K15	0000000


			1/2	Bottom	300	Side	90° Elbow	3 3/4"	Air, Inert Gas	-40 to 400	Ring	Pop Safety	ASME BPVC.VIII	25 , 50 , 75 , 100 , 125 , 150 , 175 , 200 , 225 , 250 , 275 , 300	98905K18	000000

ASME-Code Fast-Acting Pressure-Relief Valves for Water

These valves meet ASME Code Section VIII for use with water pressure vessels. They spring fully open at the set pressure and remain open until the system pressure is restored below the set pressure. All have a threaded relief port that can be attached to a drain line for remote discharge. Body is bronze for durability and a long service life.

	Inlet		Relief
	Pipe Size	Location	Port Pipe Size	Port Location	Overall Ht.	Valve Type	Certification	For Use With	Temp. Range, ° F	Choose a Set Pressure, psi		Each
NPT Male Inlet and NPT Female Relief Port







				Bronze Body—316 Stainless Steel Seal

				1/2	Bottom	3/4	Side	7 1/2"	Pop Safety	ASME BPVC.VIII	Water	-60 to 406	20 , 30 , 40 , 50 , 60 , 70 , 80 , 90 , 100 , 125 , 150 , 175 , 200 , 225 , 250 , 275 , 300	6270T11	0000000


				3/4	Bottom	3/4	Side	7 1/2"	Pop Safety	ASME BPVC.VIII	Water	-60 to 406	20 , 30 , 40 , 50 , 60 , 70 , 80 , 90 , 100 , 125 , 150 , 175 , 200 , 225 , 250 , 275 , 300	6270T12	000000
				1	Bottom	1 1/4	Side	9"	Pop Safety	ASME BPVC.VIII	Water	-60 to 406	20 , 30 , 40 , 50 , 60 , 70 , 80 , 90 , 100 , 125 , 150 , 175 , 200 , 225 , 250 , 275 , 300	6270T13	000000
				1 1/2	Bottom	2	Side	13 1/4"	Pop Safety	ASME BPVC.VIII	Water	-60 to 406	20 , 30 , 40 , 50 , 60 , 70 , 80 , 90 , 100 , 125 , 150 , 175 , 200 , 225 , 250 , 275 , 300	6270T16	000000

Corrosion-Resistant Remote-Discharge ASME-Code Fast-Acting Pressure-Relief Valves for Air and Inert Gas

With a 316 stainless steel body for exceptional corrosion resistance, these valves are often used in wet conditions and harsh environments. They spring fully open at the set pressure and remain open until the system pressure is restored below the set pressure. All meet ASME Code Section VIII for use with air and inert gas pressure vessels. Attach a drain line to the threaded relief port for remote discharge.

NPT Female Inlet and Relief Port


For Air	For Inert Gas

For Use With—To Order: Please specify air or inert gas and set pressure in 1 psi increments (from 150 to 2,700 psi for valves with _1/2 or 1 inlet pipe size, or 150 to 2,269 psi for valves with _3/4 inlet pipe size).

Inlet			Relief
Pipe Size	Location	Max. Pressure, psi	Port Pipe Size	Port Location	Choose a Set Pressure, psi	Shape	Overall Ht.	Temp. Range, ° F	Valve Type	Certification	For Use With		Each







			316 Stainless Steel Body—Fluoroelastomer Seal

			1/2	Bottom	3,300	3/4	Side	150 to 2,700	90° Elbow	9"	-10 to 400	Pop Safety	ASME BPVC.VIII	Air , Inert Gas	6872K31	000000000

NPT Male Inlet and NPT Female Relief Port


For Air	For Inert Gas

Inlet			Relief
Pipe Size	Location	Max. Pressure, psi	Port Pipe Size	Port Location	Choose a Set Pressure, psi	Shape	Overall Ht.	Temp. Range, ° F	Valve Type	Certification	For Use With		Each







			316 Stainless Steel Body—Fluoroelastomer Seal

			3/4	Bottom	3,300	3/4	Side	150 to 2,269	90° Elbow	9"	-10 to 400	Pop Safety	ASME BPVC.VIII	Air , Inert Gas	6872K32	000000000


			1	Bottom	3,300	1	Side	150 to 2,700	90° Elbow	9"	-10 to 400	Pop Safety	ASME BPVC.VIII	Air , Inert Gas	6872K33	00000000

Remote-Discharge ASME-Code Fast-Acting Pressure-Relief Valves for Air and Inert Gas

Unlike valves that release discharge directly, these have a threaded relief port to direct discharge away from your work environment. They spring fully open at the set pressure and remain fully open until the system pressure is restored below the set pressure. All meet ASME Code Section VIII for use with air and inert gas pressure vessels. Body is bronze for durability and a long service life.

1/2 NPT Male Bottom Inlet × 3/4 NPT Female Side Pipe Relief Port

Valve With

Test Lever

Material
Seal	Body	Temp. Range, ° F	Test Mechanism	Overall Ht.	Valve Type	For Use With	Certification	Choose a Set Pressure, psi		Each
316 Stainless Steel	Bronze	-60 to 422	Lever	7 5/8"	Pop Safety	Air, Inert Gas	ASME BPVC.VIII	300 , 325 , 350 , 375 , 400 , 425 , 450 , 475 , 500 , 525 , 550 , 575 , 600 , 625 , 650 , 675 , 700 , 725 , 750 , 775 , 800 , 825 , 850 , 875 , 900	6338T11	0000000

3/4 NPT Male Bottom Inlet × 3/4 NPT Female Side Pipe Relief Port

Valve With

Test Lever

Material
Seal	Body	Temp. Range, ° F	Test Mechanism	Overall Ht.	Valve Type	For Use With	Certification	Choose a Set Pressure, psi		Each
316 Stainless Steel	Bronze	-60 to 422	Lever	7 5/8"	Pop Safety	Air, Inert Gas	ASME BPVC.VIII	300 , 325 , 350 , 375 , 400 , 425 , 450 , 475 , 500 , 525 , 550 , 575 , 600 , 625 , 650 , 675 , 700 , 725 , 750 , 775 , 800 , 825 , 850 , 875 , 900	6338T12	0000000

1 NPT Male Bottom Inlet × 1 1/4 NPT Female Side Pipe Relief Port

Valve With

Test Lever

Material
Seal	Body	Temp. Range, ° F	Test Mechanism	Overall Ht.	Valve Type	For Use With	Certification	Choose a Set Pressure, psi		Each
316 Stainless Steel	Bronze	-60 to 422	Lever	9"	Pop Safety	Air, Inert Gas	ASME BPVC.VIII	300 , 325 , 350 , 375 , 400 , 425 , 450 , 475 , 500 , 525 , 550 , 575 , 600 , 625 , 650 , 675 , 700 , 725 , 750 , 775 , 800 , 825 , 850 , 875 , 900	6338T13	0000000