Air compressor pressure valve switch features high accuracy and quick response Piston structure, the rate is 30% higher than that of traditional diaphragm type. Piston seal adopts v‑type sealing ring, good sealing, wear‑ and stable. The valve body structure has overflow port, for fast pressure reduction Small size, light weight, and easy to install, Weight: 1.35804753392 pounds, Manufacturer: PokFhgur