Air tank valves are constructed of high-quality brass for strength, corrosion resistance, high temperature ductility, and low magnetic permeability for long-lasting performance. Air gauges are made of durable stainless steel to provide years of accurate readings. This air compressor safety valve has a thread diameter of approximately 1/4 inch, compatible with most air compressors, making it a widely applicable and practical accessory for various models. It is suitable for discharging air, water, and oil from air compressor systems, ensuring reliable and long-term operation. The pneumatic relief valve is designed for high-temperature applications up to 250 degrees Fahrenheit. Safe relief working pressure is 200 PSI, with a flow rate of 49 SCFM. Operating temperature range is 32 to 176 degrees Fahrenheit. Practical function: The 200 PSI pressure relief valve helps reduce excess pressure or vacuum in the system. When pressure in the air compressor tank exceeds the preset limit, the valve opens to release gas or liquid, reducing internal pressure. Color: Gold Material: Brass Package Contents: 2 x Air compressor relief pressure safety valves 2 x Air gauges Note: Light reflection and different displays may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3 cm.