Explosion Protection Systems

Shandong Zhengda Weiye Safety Equipment Co., Ltd. provides explosion isolation valves categorized by actuation method and application. Passive mechanical flap valves operate without external power, using the explosion pressure wave to instantly close and mechanically lock, effectively isolating dust explosions in ducts and conveying systems. Active high-speed isolation valves employ pressure detectors to trigger rapid closure (within milliseconds) via nitrogen or pneumatic actuators, suitable for both dust and gas explosions requiring positive shut-off. Designed for horizontal installation, our valves are available in stainless steel and carbon steel, complying with NFPA and ATEX standards to prevent flame and pressure propagation.