Stainless Steel Pop-Safety Valves

	Body Material Body Material

303 Stainless Steel

316 Stainless Steel

	Inlet Pipe Size Inlet Pipe Size

1/4

1/2

3/4

	Maximum Inlet Pressure Maximum Inlet Pressure

300psi

3,300psi

	Seal Material Seal Material

Stainless Steel

Rubber

	For Use With For Use With

Air

Inert Gas

	Inlet Gender Inlet Gender

Male

Female

	Relief Port Connection Type Relief Port Connection Type

Vent

Pipe

	Relief Port Pipe Size Relief Port Pipe Size

3/4

	Set Pressure Set Pressure

	Minimum Temperature Minimum Temperature

-40° F

-10° F

	Overall Height Overall Height

3 1/8"

3 3/4"

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	Set Pressure Accuracy Set Pressure Accuracy

±4%

±3%

	Airflow Capacity Airflow Capacity

5 Products

About Pressure-Relief Valves

For Use With: Air, Inert Gas
Specifications Met: ASME BPVC.VIII
Temperature Range: -40° to 400° F

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.

For technical drawings and 3-D models, click on a part number.

Inlet
Pipe Size	Location	Maximum Pressure, psi	Relief Port Location	Overall Ht.	Test Mechanism	Valve Type	Choose a Set Pressure, psi		Each
NPT Male Inlet and Relief Vent
303 Stainless Steel Body and Seal
1/4	Bottom	300	Side	3 1/8"	Ring	Pop Safety	25, 50, 75, 100, 125, 150, 175, 200, 225, 250, 275, 300	00000000	0000000
1/2	Bottom	300	Side	3 3/4"	Ring	Pop Safety	25, 50, 75, 100, 125, 150, 175, 200, 225, 250, 275, 300	00000000	000000

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

For Air

For Inert Gas

Specifications Met: ASME BPVC.VIII
Temperature Range: -10° to 400° F

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.

To Order: Please specify medium (air or inert gas) and set pressure (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 Port
Pipe Size	Location	Maximum Pressure, psi	Pipe Size	Location	Shape	Overall Ht.	Valve Type	Choose a Medium		Each
NPT Female Inlet and NPT Female Relief Port
316 Stainless Steel Body—Fluoroelastomer Seal
1/2	Bottom	3,300	3/4	Side	90° Elbow	9"	Pop Safety	Air, Inert Gas	0000000	0000000
NPT Male Inlet and NPT Female Relief Port
316 Stainless Steel Body—Fluoroelastomer Seal
3/4	Bottom	3,300	3/4	Side	90° Elbow	9"	Pop Safety	Air, Inert Gas	0000000	000000
1	Bottom	3,300	1	Side	90° Elbow	9"	Pop Safety	Air, Inert Gas	0000000	000000

About Pressure-Relief Valves

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

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

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

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