Quality and Service Since 1936

Check & Safety Valves

Check & Safety Valves

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
  • In-Tank Check Valves
  • In-Line Cast Brass Check Valves

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 NumberInlet SizeSet Pressure RangeWeight
SP12 1/8" NPT 75-250 PSIG 1.0 oz.
SP25 1/4" NPT 75-250 PSIG 1.0 oz.

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 NumberInlet SizeSet Pressure RangeWeight
ST12 1/8" NPT 25-350 PSIG 2.0 oz.
ST25 1/4" NPT 25-350 PSIG 2.0 oz.
ST33 3/8" NPT 25-350 PSIG 2.0 oz.

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 RangeWeight
SA12 1/8" NPT 50-350 PSIG 2.5 oz.
SA25 1/4" NPT 50-350 PSIG 2.5 oz.
SA33 3/8" NPT 50-350 PSIG 2.5 oz.

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 RangeWeight
SV50 1/2" NPT 50-250 PSIG 6.0 oz.

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 NumberInlet SizeSet Pressure RangeWeight
SN50 1/2" NPT 50-350 PSIG 6.0 oz.

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 NumberInlet SizeSet Pressure RangeWeight
SB50 1/2" NPT 25-300 PSIG 10.0 oz.
SB75 3/4" NPT 25-300 PSIG 10.0 oz.

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 NumberInlet SizeSet Pressure RangeWeight
SW10 1" NPT 25-300 PSIG 1.75 lbs.
SW12 1 1/4" NPT 25-300 PSIG 2 lbs.

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 NumberTube Comp. InletM.P.T. OutletMax Flow RateWeight
C3850T 3/8" 1/2" 20 SCFM 4.2 oz.
C5050T 1/2" 1/2" 20 SCFM 4.3 oz.
C7575T 3/4" 3/4" 30 SCFM 7.4 oz.
C7510T 3/4" 1" 60 SCFM 11.5 oz.

 

Female Pipe Thread Inlet Valves

Model NumberF.P.T. InletM.P.T. OutletMax Flow RateWeight
P3838T 3/8" 3/8" 12 SCFM 3 oz.
P3850T 3/8" 1/2" 20 SCFM 3.8 oz.
P5050T 1/2" 1/2" 20 SCFM 5.5 oz.
P5075T 1/2" 3/4" 30 SCFM 6.5 oz.
P7575T 3/4" 3/4" 30 SCFM 7.2 oz.
P7510T 3/4" 1" 60 SCFM 11.4 oz.
P7515T 3/4" 1 1/2" 150 SCFM 24 oz.
P1010T 1" 1" 60 SCFM 12.5 oz.
P1212T 1 1/4" 1 1/4" 130 SCFM 17.5 oz.
P1515T 1 1/2" 1 1/2" 150 SCFM 30 oz.

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 NumberConnection SizeMax Flow RateWeight
CB13 1/8" NPT 12 SCFM 6.0 oz.
CB25 1/4" NPT 12 SCFM 6.0 oz.
CB33 3/8" NPT 22 SCFM 9.0 oz.
CB50 1/2" NPT 38 SCFM 13.0 oz.
CB75 3/4" NPT 60 SCFM 1.25 lbs.
CB10 1" NPT 115 SCFM 1.75 lbs.
CB12 1 1/4" NPT 160 SCFM 2.5 lbs.
CB15 1 1/2" NPT 160 SCFM 2.75 lbs.
CB20 2" NPT 220 SCFM 3.75 lbs.
  1. CB13

    CB13

    Cast Brass Inline Check Valves Shop Now »
  2. P1010T

    P1010T

    Female Pipe Thread Inlet Valves Shop Now »
  3. P1212T

    P1212T

    Female Pipe Thread Inlet Valves Shop Now »
  4. P1515T

    P1515T

    Female Pipe Thread Inlet Valves Shop Now »
  5. SP12

    SP12

    SP Model Shop Now »
  6. SP25

    SP25

    SP Model Shop Now »
  7. ST12

    ST12

    ST Model Shop Now »
  8. ST25

    ST25

    ST Model Shop Now »
  9. ST33

    ST33

    ST Model Shop Now »
  10. SA12

    SA12

    SA Model Shop Now »

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