Choosing the right air compressor head pressure relief valve is essential for maintaining safe pressure levels and preventing damage to your air compressor system. These valves help release excess pressure, protecting equipment from potential overpressure hazards. Below is a summary of five highly reliable air compressor pressure relief valves that combine durability, precision, and effective safety features.
| Product | Brand | Pressure Rating | Material | Quantity |
|---|---|---|---|---|
| New 1/4″ NPT 150 PSI 58 SCFM Air Compressor Relief Pressure Safety Valve | ALL Tool Depot | 150 PSI | Brass with Stainless Steel Spring | 1 |
| QWORK Brass Pressure Relief Valve (2 Pack) | QWORK | 150 PSI | Brass | 2 |
| MTQY 2PCS 1/4 Inch NPT 175 PSI Air Compressor Pressure Relief Safety Valve | MTQY | 175 PSI | Brass | 2 |
| LSTOPGO 2 Pieces 1/4” Male 150 PSI Air Compressor Pressure Relief Valve | LSTOPGO | 150 PSI | Brass | 2 |
| 4 Pieces 1/4 Male NPT Safety Valve Pressure Relief Air Compressor Check Valve | Bonuci | 200 PSI | Brass | 4 |
New 1/4″ NPT 150 PSI 58 SCFM Air Compressor Relief Pressure Safety Valve
This valve features 1/4″ male NPT threaded inlet and offers a reliable preset relief pressure of 150 PSI, accurate within ±3%. Constructed from brass with a stainless steel spring, it offers excellent corrosion resistance and durability. The inclusion of a silicon O-ring ensures a leak-proof seal within ±10% of the relief pressure. It also supports a maximum temperature of up to 250°F, making it suitable for high-temperature applications.
QWORK Brass Pressure Relief Valve (2 Pack) – 1/4 Inch NPT Threaded
This 2-pack of brass pressure relief valves is preset for 150 PSI with a flow rate of 58 SCFM, designed to maintain safe overpressure limits. Each valve features 1/4″ male NPT threading treated with glue for superior seal integrity and to prevent leaks. The robust brass construction ensures excellent oxidation and corrosion resistance for long service life.
MTQY 2PCS 1/4 Inch NPT 175 PSI Air Compressor Pressure Relief Safety Valve
These two valves come preset at a higher safety release pressure of 175 PSI. They are made of brass offering corrosion resistance and ductility under high temperatures. Rated for temperatures between -65°F and 250°F, these valves also handle air, water, and oil discharge. Each valve includes sealing thread locks for secure installation.
LSTOPGO 2 Pieces 1/4” Male 150 PSI Air Compressor Pressure Relief Valve
The LSTOPGO valve package includes two brass relief valves preset to 150 PSI with a flow rate of 58 SCFM. The brass body provides oxidation and corrosion resistance. These valves feature thread locks using quality glue to ensure excellent sealing, preventing leaks and maintaining system integrity. Temperature range supported is 32°F to 176°F.
4 Pieces 1/4 Male NPT Safety Valve 200 PSI Set Pressure
This pack of four valves is designed for high capacity safety needs, preset at 200 PSI with a flow rate of 178 CFM. Made of corrosion-resistant brass, these valves withstand temperatures from -65°F to 250°F, suitable for discharging air, water, and oil. Sealed with thread locks, they provide dependable performance for larger or high-demand air compressor systems.
Buying Guide for Air Compressor Head Pressure Relief Valves
Pressure Rating
Select a valve rated for the maximum pressure your air compressor is designed to handle. Typical settings range from 135 PSI to 200 PSI. Choosing a valve with a slightly higher rating than your system pressure ensures safety without premature valve activation.
Material & Build Quality
Brass valves are standard due to their corrosion resistance, durability, and heat tolerance. Stainless steel springs enhance longevity and consistent performance. Look for valves with quality seals, such as silicon O-rings or glue-treated threads, to minimize leaks.
Flow Capacity
Flow rate (SCFM or CFM) indicates the valve’s ability to release pressure quickly. Higher flow capacities are essential for larger compressors or systems with rapid air pressure build-up. Confirm flow rate compatibility with your compressor’s volume and usage.
Thread Size and Compatibility
Almost all valves reviewed use 1/4″ NPT male threading, a common standard. Verify your compressor’s port threading matches the valve to avoid installation challenges.
Temperature Range
Consider the operating environment. Valves designed to withstand higher temperatures (up to 250°F) are suitable for heavy-duty or heated applications. Lower temperature ranges limit usage to mild environments.
Quantity and Replacement Needs
Some buyers prefer multi-packs for convenience and future replacement needs. Multi-valve packs also provide cost benefits and ensure you have spares on hand.
Additional Features
Features such as preset pressure accuracy, sealing thread locks, and pressure/vacuum relief functionalities enhance reliability. Choose valves that close automatically below preset pressures to prevent air loss.