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Industrial and commercial scenarios often face three major challenges: continuous operation, complex media and pressure fluctuations. Factory water supply and drainage require fittings with stable pre...
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Our Industrial UPVC True Union Ball Valve is a versatile, heavy-duty fluid control valve engineered to provide reliable shutoff and rapid inline serviceability in demanding liquid piping systems. Featuring a dual union-nut design, this valve allows the central valve body to be completely isolated and removed from the pipeline without cutting the connected pipe or disassembling adjacent fittings. Constructed with a heavy-wall molded body and a mirror-polished spherical ball, it delivers smooth quarter-turn operation with low torque requirements. The valve incorporates a double stem seal and a carrier seal block system that permits safe downstream union nut removal while the upstream side remains under full system line pressure.
Technical & Design Advantages:
Dual-Union Inline Disconnect Design: Allows complete valve body removal for maintenance, seal replacement, or cleaning without disturbing surrounding pipe runs.
Upstream Block Seal Carrier: Built-in seal retainer system maintains upstream pressure tightness even when the downstream union nut is disconnected.
Mirror-Finished Spherical Ball: Precision-ground ball surface paired with PTFE seats delivers bubble-tight shutoff with minimal operating hand torque.
Blowout-Proof Stem Structure: Internally fitted valve stem design prevents stem ejection under extreme system pressure surges.
Zhejiang Feiya Plastic Co., Ltd. is located in Zhejiang Province, adjacent to Yiwu — the world‑renowned capital of small commodities. It enjoys convenient transport links to coastal cities including Shanghai, Hangzhou, Ningbo and Taizhou, backed by well‑developed logistics networks.
Our journey started in 1992 as Jiangshan Sanjin Machinery & Hardware Factory. We strategically turned to PVC piping production in 2001 and registered our proprietary FEIYA brand in 2002. With over 30 years of industrial expertise, our 40‑acre factory boasts a building area of 50,000 m². As an original manufacturer for plastic pipes, fittings and valves, we serve domestic markets and export our products to more than 100 countries around the globe.
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