General Air Products

Check Valves & Safety Valves

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We are a leading manufacturer of high quality valves serving the compressed air, pressure washer, automotive, fluid power, fire protection, specialty gas and pneumatic industries. The types of valves we carry include, but are not limited to:

ASME Safety Valves - Model 'SP'
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ASME Safety Valves - Model 'SP'

Model "SP" ASME safety valves are designed for applications where a compact size is required and high flow capacities are not needed.

For example, a 3 HP compressor may add 10 SCFM of air into the receiver at 125 PSI. The "SP" will flow 42 SCFM at 125 PSI set pressure, so it will be adequate for this system.

Resilient flourocarbon rubber pad insures valve is bubble-tight to within 10% of set pressure. 1/8" NPT and 1/4" NPT inlets available.

All brass construction with stainless steel spring. Stamped with "UV" and "NB" symbols.

Available set pressure range 75 PSI to 250 PSI. Set pressure tolerance +3% of set pressure. 250°F max. temperature.

Model Number Inlet Size Set Pressure Range Weight List Price
SP12 1/8" NPT 75-250 PSIG 1.0 oz. $5.95 Buy
SP25 1/4" NPT 75-250 PSIG 1.0 oz. $5.70 Buy
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ASME Safety Valves - Model 'ST'
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ASME Safety Valves - Model 'ST'

The Model "ST" safety valve is our standard safety valve for small air compressor systems and related applications. Even though the size is compact, flow capacities are high.

Resilient rubber pad, offered in silicone or flourocarbon, insures valve is bubble-tight to within 10% of set pressure. Three inlet sizes are available: 1/8" NPT, 1/4" NPT, and 3/8" NPT.

All brass construction with zinc-plated music wire spring. Stamped with "UV" and "NB" symbols. Available set pressure range 25 PSI to 250 PSI. Set pressure tolerance +3% of set pressure. 250°F max. temperature.

Model Number Inlet Size Set Pressure Range Weight List Price
ST12 1/8" NPT 25-350 PSIG 2.0 oz. $8.10 Buy
ST25 1/4" NPT 25-350 PSIG 2.0 oz. $7.35 Buy
ST33 3/8" NPT 25-350 PSIG 2.0 oz. $8.10 Buy
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ASME Safety Valves - Model 'SA'
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ASME Safety Valves - Model 'SA'

Model "SA" ASME safety valves are designed for high temperature applications such as intercoolers and aftercoolers where a compact size is required.

All brass construction with stainless steel spring and stainless steel ball seating on brass seat. Three inlet sizes available: 1/8" NPT, 1/4" NPT, 3/8" NPT.

Stamped with "UV" and "NB" symbols. Available set pressure range 50 PSI to 350 PSI. Set pressure tolerance +3% of set pressure. 350°F max. temperature.

Model NumberInlet SizeSet Pressure RangeWeightList Price
SA12 1/8" NPT 50-350 PSIG 2.5 oz. $10.75 Buy
SA25 1/4" NPT 50-350 PSIG 2.5 oz. $12.50 Buy
SA33 3/8" NPT 50-350 PSIG 2.5 oz. $12.50 Buy
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ASME Safety Valves - Model 'SV'
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ASME Safety Valves - Model 'SV'

Model "SV" ASME safety valves are designed for systems where large flow capacities are needed. Resilient pad insures valve is bubble-tight to within 10% of set pressure. Inlet size: 1/2" NPT.

All brass construction with zinc-plated music wire spring and a rubber seal, offered in silicone or flourocarbon. Stamped with "UV" and "NB" symbols. Set pressure tolerance +3% of set pressure. 250°F max. temperature.

Model NumberInlet SizeSet Pressure RangeWeightList Price
SV50 1/2" NPT 50-250 PSIG 6.0 oz. $22.60 Buy
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ASME Safety Valves - Model 'SN'
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ASME Safety Valves - Model 'SN'

Model "SN" ASME safety valves are designed for high temperature applications where large flow capacities are needed.

All brass construction with stainless steel spring and stainless steel ball seating on brass seat. Inlet size: 1/2" NPT. Stamped with "UV" and "NB" symbols. Available set pressure range 50 PSI to 350 PSI. Set pressure tolerance +3% of set pressure. 350°F max. temperature.

Model Number Inlet Size Set Pressure Range Weight List Price
SN50 1/2" NPT 50-350 PSIG 6.0 oz. $24.60 Buy
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ASME Safety Valves - Model 'SB'
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ASME Safety Valves - Model 'SB'

Model "SB" safety valves offer Control Devices value to users of high capacity ASME safety valves. Unique O-ring seal insures valve is bubble-tight to within 10% of set pressure. 1/2" NPT and 3/4" NPT inlets available.

All brass construction with stainless steel springs. O-ring seal available in silicone or fluorocarbon rubber. Available set pressure range 25 PSI to 300 PSI. Set pressure tolerance + 3% of set pressure. 250°F max. temperature.

Model Number Inlet Size Set Pressure Range Weight List Price
SB50 1/2" NPT 25-300 PSIG 10.0 oz. $64.05 Buy
SB75 3/4" NPT 25-300 PSIG 10.0 oz. $64.15 Buy
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ASME Safety Valves - Model 'SW'
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ASME Safety Valves - Model 'SW'

The model "SW" valve is our highest capacity ASME safety valve. Unique O-ring seal insures valve is bubble-tight to within 10% of set pressure. 1" NPT and 1-1/4" NPT inlets available.

All brass construction with stainless steel springs. O-ring seal available in silicone or fluorocarbon rubber. Stamped with "UV" and "NB" symbols. Available set pressure range 25 PSI to 300 PSI. Set pressure tolerance +3% of set pressure. 250°F max. temperature.

Model Number Inlet Size Set Pressure Range Weight List Price
SW10 1" NPT 25-300 PSIG 1.75 lbs. $86.40 Buy
SW12 1 1/4" NPT 25-300 PSIG 2 lbs. $87.00 Buy
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In-Tank Check Valves
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In-Tank Check Valves

The Super-Chek® design has been proven over the last 15 years to be the standard for air compressor in-tank check valves. One-piece brass bodies, stainless steel springs, and glass-filled fluoropolymer poppets all add up to long term reliability, while the eight discharge holes insure quiet operation.

 

Valves may be disassembled for cleaning or repair. Valves are 100% tested for backflow leakage performance. 450 PSI max pressure, 400 deg. F max temperature.

 

Compression Fitting Inlet Valves

Model Number Tube Comp. Inlet M.P.T. Outlet Max Flow Rate Weight List Price
C3850T 3/8" 1/2" 20 SCFM 4.2 oz. $15.90 Buy
C5050T 1/2" 1/2" 20 SCFM 4.3 oz. $15.60 Buy
C7575T 3/4" 3/4" 30 SCFM 7.4 oz. $20.80 Buy
C7510T 3/4" 1" 60 SCFM 11.5 oz. $41.75 Buy

 

Female Pipe Thread Inlet Valves

Model Number F.P.T. Inlet M.P.T. Outlet Max Flow Rate Weight List Price
P3838T 3/8" 3/8" 12 SCFM 3 oz. $39.80 Buy
P3850T 3/8" 1/2" 20 SCFM 3.8 oz. $15.25 Buy
P5050T 1/2" 1/2" 20 SCFM 5.5 oz. $15.25 Buy
P5075T 1/2" 3/4" 30 SCFM 6.5 oz. $33.80 Buy
P7575T 3/4" 3/4" 30 SCFM 7.2 oz. $25.65 Buy
P7510T 3/4" 1" 60 SCFM 11.4 oz. $30.15 Buy
P7515T 3/4" 1 1/2" 150 SCFM 24 oz. $25.00 Buy
P1010T 1" 1" 60 SCFM 12.5 oz. $49.60 Buy
P1212T 1 1/4" 1 1/4" 130 SCFM 17.5 oz. $107.40 Buy
P1515T 1 1/2" 1 1/2" 150 SCFM 30 oz. $158.20 Buy
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In-Line Cast Brass Check Valves
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In-Line Cast Brass Check Valves

These cast-brass check valves have been specifically designed for installation into air compressor discharge lines. Extra-heavy walled cast brass bodies, glass-filled fluoropolymer poppets, and stainless springs resist corrosion and insure long life.

A plugged, 1/8" NTP unloader port is standard. 250 PSI maximum pressure, 450°F maximum temperature.

Model Number Connection Size Max Flow Rate Weight List Price
CB13 1/8" NPT 12 SCFM 6.0 oz. $27.25 Buy
CB25 1/4" NPT 12 SCFM 6.0 oz. $24.00 Buy
CB33 3/8" NPT 22 SCFM 9.0 oz. $27.25 Buy
CB50 1/2" NPT 38 SCFM 13.0 oz. $36.50 Buy
CB75 3/4" NPT 60 SCFM 1.25 lbs. $51.25 Buy
CB10 1" NPT 115 SCFM 1.75 lbs. $112.50 Buy
CB12 1 1/4" NPT 160 SCFM 2.5 lbs. $142.00 Buy
CB15 1 1/2" NPT 160 SCFM 2.75 lbs. $151.00 Buy
CB20 2" NPT 220 SCFM 3.75 lbs. $290.00 Buy
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Contact General Air Products with all your Air Treatment applications at
1-800-345-8207 or genairpro@generalairproducts.com