At General Air Products, we pride ourselves on quality manufacturing and impeccable customer service. Our air compressors and their parts are found in systems all over the country, optimizing processes in industries such as fire protection, fluid power, pressure washing, automotive construction, specialty gas processing, and pneumatics.
We carry a wide selection of air compressor check valves, safety valves, and relief valves to cater to all your most pressing needs. Valve types in our catalog include popular options like:
- ASME safety valves: Safety valves release when the air compressor tank reaches a pressure level that is unhealthy for the machine. These valves are certified for use by the American Society of Mechanical Engineers (ASME).
- In-tank check valves: Check valves help your air compressor keep gasses securely inside the tank when not in use.
- In-line cast brass check valves: Like in-tank check valves, this valve type contains and directs airflow. These valves are located on specific lines instead of in the tank itself.
The Model ST is the standard safety valve for small air compressor systems. This model offers three inlet sizes and a high-flow, compact capacity. Features include:
- Seal pad made from rubber, silicone, or fluorocarbon
- Brass construction with zinc-plated music wire spring
- “UV” and “NB” symbols stamped onto valve
- Set pressure range of 25 PSI to 300-350 PSI, depending on model
- 3% pressure tolerance
- Works in temperatures up to 250°F
The Model SA is an ASME safety valve for compact, high-temperature applications. It includes features such as:
- Three inlet sizes — 1/8″ NPT, 1/4″ NPT, and 3/8″ NPT
- Brass construction with stainless steel spring and ball seating
- “UV” and “NB” symbols stamped onto valve
- Set pressure range of 50 PSI to 350 PSI
- 3% pressure tolerance
- Works in temperatures up to 350°F
Model Number | Inlet Size | Set Pressure Range | Weight |
|---|---|---|---|
1/4″ NPT | 50-350 PSIG | 2.5 oz. |
This ASME safety valve is ideal for systems requiring large-flow capacities. Specifications include:
- 1/2″ NPT inlet size
- Resilient rubber, silicone, or fluorocarbon seal
- Brass construction with zinc-plated music wire
- “UV” and “NB” symbols stamped onto valve
- Set pressure range of 50 PSI to 250 PSI
- 3% pressure tolerance
- Works in temperatures up to 250°F
Model Number | Inlet Size | Set Pressure Range | Weight |
|---|---|---|---|
1/2″ NPT | 50-250 PSIG | 6.0 oz. |
This ASME safety valve is for high-temperature applications needing large-flow capacities. Specifications include:
- 1/2″ NPT inlet size
- Brass construction with stainless steel spring and ball seating
- “UV” and “NB” symbols stamped onto valve
- Set pressure range of 50 PSI to 350 PSI
- 3% pressure tolerance
- Works in temperatures up to 350°F
Model Number | Inlet Size | Set Pressure Range | Weight |
|---|---|---|---|
1/2″ NPT | 50-250 PSIG | 6.0 oz. |
When you need a high-capacity ASME safety valve, the SB model allows maximum control through:
- Unique O-ring seal
- 1/2″ NPT and 3/4″ NPT inlet sizes
- Stainless steel springs and brass body construction
- Set pressure range of 25 PSI to 300 PSI
- 3% pressure tolerance
- Works in temperatures up to 250°F
The Model SW is the highest-performing ASME safety valve we have in our catalog. Explore quality manufacturing with:
- Unique O-ring seal
- 1″ NPT and 1¼” NPT inlet sizes
- Stainless steel springs and brass body construction
- Set pressure range of 25 PSI to 300 PSI
- 3% pressure tolerance
- Works in temperatures up to 250°F
Our in-tank valves feature the Super-Chek® design, the standard in all air compressor in-tank check valves. Valves come in compression fitting and female pipe thread varieties, which are easily disassembled for cleaning and repair. Each valve is tested for backflow leakage performance before sale and delivers power specifications like:
- A one-piece brass body and stainless steel springs
- Glass-filled fluoropolymer poppets
- Eight discharge holes for quiet operation
- 450 PSI pressure maximum
- 400°F temperature maximum
Compression Fitting Inlet Valves
Model Number | Tube Comp. Inlet | M.P.T. Outlet | Max Flow Rate | Weight |
|---|---|---|---|---|
3/8″ | 1/2″ | 20 SCFM | 4.2 oz. | |
1/2″ | 1/2″ | 20 SCFM | 4.3 oz. | |
3/4″ | 3/4″ | 30 SCFM | 7.4 oz. | |
3/4″ | 1″ | 60 SCFM | 11.5 oz. |
Female Pipe Thread Inlet Valves
Model Number | F.P.T. Inlet | M.P.T. Outlet | Max Flow Rate | Weight |
|---|---|---|---|---|
3/8″ | 3/8″ | 12 SCFM | 3 oz. | |
3/8″ | 1/2″ | 20 SCFM | 3.8 oz. | |
1/2″ | 1/2″ | 20 SCFM | 5.5 oz. | |
1/2″ | 3/4″ | 30 SCFM | 6.5 oz. | |
3/4″ | 3/4″ | 30 SCFM | 7.2 oz. | |
3/4″ | 1″ | 60 SCFM | 11.4 oz. | |
3/4″ | 1 1/2″ | 150 SCFM | 24 oz. | |
1″ | 1″ | 60 SCFM | 12.5 oz. | |
1 1/4″ | 1 1/4″ | 130 SCFM | 17.5 oz. | |
1 1/2″ | 1 1/2″ | 150 SCFM | 30 oz. |
Quality in-line valves require superior construction and an emphasis on longevity. These cast-brass check valves can help any air compressor maintain discharge lines through:
- Extra-heavy walled bodies and corrosion-resistant stainless steel springs
- Glass-filled fluoropolymer poppets
- 250 PSI pressure maximum
- 450°F temperature maximum
Request a Quote on Air Compressor Valves
Every air compressor deserves the highest-quality parts to extend its life span and minimize workflow errors or interruptions. General Air Products believes in manufacturing top-tier equipment that lasts longer than our competitors and comes with the support of our best customer service representatives.
Discover which valves fit your air compressor needs and request a quote from our service team today. You can reach out online or call us at 888-814-2196 now to stay up to date on our industrial products.