Hangzhou Baoheng Valve Manufacturing Co., Ltd. has newly upgraded its mature Self‑operated Pressure valve, alongside full‑range valve products including Pneumatic Diaphragm PTFE Lined Control Valve and Pneumatic V‑port PTFE Lined Control Ball Valve. The new‑released Self‑operated Pressure valve works with zero‑external power. Its sensitive large‑size diaphragm keeps stable ultra‑low‑pressure regulation from 0.1‑5kPa. Multiple optional housing materials such as 316‑stainless‑steel, brass and aluminum adapt to clean‑room, medical‑gas and semiconductor‑lab environments. The bubble‑tight sealing structure stops medium backflow, and explosion‑proof property suits flammable‑gas working conditions. Our comprehensive product lineup also covers Electric Intelligent Temperature & Flow Control V‑valve, Pneumatic Triple Eccentric Rubber Lined Control and Pneumatic O‑port Cut‑off & Control Ball Valve. Every valve undergoes strict performance testing. Custom‑made thread specifications and sensor‑installed versions are offered. These durable regulating and shut‑off valves satisfy industrial pipeline demands of pharmaceutical, aerospace and chemical‑processing clients all over the world. Email address sales@hzbhvalve.com Mobile phone number +86 13868163013