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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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Van‑Stone flanges adopt a two‑part construction with rotating outer‑ring and clear‑PVC socket hub. The rotating ring simplifies on‑site bolt‑hole alignment during installation.
Maintains complete visibility for fluid media inside pipelines. Suitable for visual‑process‑line connections with pumps, tanks and flange‑mounted instruments.
360° Rotating Ring: Loose outer ring enables quick bolt-hole alignment with opposing equipment flanges, speeding up field assembly.
Transparent Hub Path: Clear hub provides visual confirmation of fluid behavior and gasket seating right at the flanged joint.
Easy Disassembly: Allows convenient line disconnection for routine system cleaning, inspection, or equipment maintenance.
High Pressure Sealing: Engineered flange face pairs reliably with flat gaskets to deliver leak-proof performance under system load.
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.
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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