● A fire-resistant resin (equivalent to UL V-0) is applied for the body material to adapt to spatter environment. ● Protective Cover at both needle and joint parts to protect from sparks. ● Medium: Air ● Operating temp. : 0~60ºC (No freezing) ● Operating pressure : 0.1~0.9 MPa, 0.05~0.5 MPa (Low cracking pressure type) ● Check valve opening pressure : 0.05 MPa, 0.02 MPa (Low cracking pressure type)