Bellows Gate Valve

Dangerous gases and valuable fluids need a valve that does not leak. Our Bellows Gate Valve solves this problem. It uses a bellow seal structure. The lower part of the bellow welds to the stem. The upper part connects to the bonnet. This creates a full metal barrier. So you get zero leakage. Many customers ask us about safety. We also add flexible graphite packing in the stuffing box. This gives double protection. Our Bellows Gate Valve works great for steam systems, heat transfer oil systems, and nuclear power helper systems. We treat the stem with a special wear-resistant process. It lasts much longer than national standards require. This stops the common problems of running, dripping, leaking, and seeping.

Some agents worry that bellows may break. At Suhao, we use 316L or Inconel for the bellows. We test them with strict shape change tests. Our R&D team uses finite element analysis. This makes the stress distribution better. So the bellows has a longer fatigue life. We also have a patent for high-temperature high-pressure valves (Patent No. CN211875110U). This gives us strong knowledge in high-temperature sealing. All our Bellows Gate Valve products follow API and DIN standards. We have the special production license for pressure equipment (TS) and ISO9001, ISO14001, ISO45001. This helps you win project bids.