1/4" 1/8" BSP Air Compressor Safety Relief Valve 120PSI
1/4" 1/8" BSP Air Compressor Safety Relief Valve 120PSI
1/4" & 1/8" BSP Brass Safety Relief Valve – 120PSI Air Compressor Pressure Release
Keep your air compressor system operating safely and efficiently with this solid brass Safety Relief Valve. Rated at 120PSI and available in both 1/8" (DN6) and 1/4" (DN8) BSP male thread sizes, this compact pressure release valve automatically vents excess pressure to protect your compressor tank, pressure vessels, and pneumatic pipework from over-pressurization. A must-have replacement or spare part for any workshop, garage, or job site.
Key Features
- Dual Thread Sizes: Fits 1/8" (DN6, 9.5mm) and 1/4" (DN8, 12.5mm) BSP male thread connections
- 120PSI Rated: Automatically releases pressure at or above 120PSI to safeguard your system
- Solid Brass Construction: Durable, corrosion-resistant brass body built for long-lasting performance
- Compact Design: Approx. 38mm length × 9mm diameter — easy to fit in tight spaces
- Wide Compatibility: Suitable for air compressors, pressure piping, pressure vessels, and pneumatic systems
- Two-Stage Protection: Ideal for two-grade air compressor safety applications
- Easy Replacement: Direct drop-in replacement for worn or faulty relief valves
Specifications
| Material | Brass |
| Pressure Rating | 120 PSI |
| Thread Sizes | 1/8" (DN6 / 9.5mm) & 1/4" (DN8 / 12.5mm) BSP Male |
| Length | Approx. 38mm |
| Diameter | Approx. 9mm |
| Quantity | 1 pc |
| Country of Origin | Made in China |
Package Contents
- 1 × Air Compressor Safety Relief Valve
Important Notes
- Actual color may vary slightly from photos due to monitor settings and lighting conditions.
- Please allow ±1–2mm tolerance in manual measurements.
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Frequently Asked Questions
Q: What thread standard does this safety relief valve use?
A: This safety relief valve uses BSP (British Standard Pipe) male threads, available in 1/8" (DN6, 9.5mm) and 1/4" (DN8, 12.5mm) sizes. Always verify your compressor's port thread size before ordering to ensure a proper fit.
Q: At what pressure does this relief valve open?
A: This valve is rated to release at 120PSI. When system pressure reaches or exceeds this threshold, the valve automatically vents the excess pressure, helping to protect your compressor tank and connected pneumatic components.
Q: Is this valve compatible with my air compressor?
A: This relief valve is designed for use with standard BSP-threaded air compressors, pressure tanks, and pneumatic piping systems. It is a versatile workshop replacement part suited for most single- and two-stage air compressors that accept 1/8" or 1/4" BSP fittings. Check your compressor's existing valve thread size and PSI rating before installation.
Q: What material is the valve made from?
A: The valve body is constructed from solid brass, offering excellent durability and corrosion resistance — essential qualities for components handling pressurized air in workshop and industrial environments.