Huiya manufactures a complete range of industrial plastic valves for corrosion-resistant flow control — in UPVC, CPVC, PPH and PVDF, manual or pneumatically actuated, from DN15 to DN300. Where metal valves corrode and seize, thermoplastic valves handle aggressive acids, alkalis, brine and high-purity media at a fraction of the weight and cost. Every valve is offered in both DIN metric and ANSI/ASTM dimensions and backed by a 12-month quality warranty.
By valve type: our true union ball valves and flanged ball valves give quarter-turn shut-off for small-bore and large-bore lines respectively; butterfly valves offer compact throttling for larger diameters; and diaphragm valves isolate the media from the stem for the most aggressive and solids-bearing service. For automated dosing and process control, see our pneumatic valves.
By material: choose UPVC for ambient water and mild chemicals, CPVC for hot and acidic duty to 90°C, PPH for strong caustic and alkalis, or PVDF for concentrated acids, halogens and high purity to 120°C.Tell us your medium, concentration and temperature, and our engineers will recommend the right valve type, body material and seat.
Choosing a valve? Start with our complete guide to choosing a plastic ball valve, or compare valve types in ball valve vs butterfly valve and our diaphragm valve guide. Browse plastic ball valves by material — UPVC, CPVC, PPH and PVDF — and if a valve is giving trouble, see how to fix a leaking PVC ball valve.
CPVC Butterfly Valve (C-PVC) CPVC butterfly valves (C-PVC) give you compact, quarter-turn control of large-bore hot and corrosive lines — DN50 to DN500 — in wafer and lug bodies with a CPVC disc and an EPDM or FKM seat. They hold up to about 90 °C, the space-saving, economical choice for big-flow isolation and throttling […]
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UPVC / PVC Butterfly Valve UPVC butterfly valves — also known as PVC butterfly valves — give you compact, quarter-turn control of large-bore water and mild-chemical lines, DN50 to DN500, in wafer and lug bodies with a UPVC disc and an EPDM or FKM seat. They are the space-saving, economical choice for big-flow isolation and
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PVDF Pneumatic True Union Ball Valve When a line carries 98% sulfuric acid, hydrofluoric acid, aqua regia or 18 MΩ ultra-pure water, an ordinary plastic valve is a failure waiting to happen. The Huiya PVDF pneumatic true union ball valve is built for exactly these duties — a two-piece automated shut-off valve moulded from 100%
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PVDF Pneumatic Flanged Ball Valve The Huiya PVDF pneumatic flanged ball valve brings PVDF’s extreme chemical resistance to larger-diameter, higher-pressure and high-vibration lines. Moulded from 100% virgin PVDF and rated to 120°C, it resists 98% and fuming sulfuric acid, hydrofluoric acid, aqua regia, halogens and aggressive solvents. Its one-piece flanged body bolts directly to ANSI,
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PVDF Pneumatic Butterfly Valve The Huiya PVDF pneumatic butterfly valve gives compact, automated isolation and flow control on large-bore lines carrying the most aggressive media. With a virgin-PVDF body and disc rated to 120°C, it resists concentrated acids, halogens and solvents, while the wafer design keeps weight and cost far below a solid PVDF ball
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PPH Pneumatic Butterfly Valve The Huiya PPH pneumatic butterfly valve is a large-bore automated valve for hot alkaline and corrosive media up to 85°C — built for the high-flow lines where caustic, effluent, and process slurries demand a material that won’t soften or corrode. Made from polypropylene homopolymer (PPH) in sizes DN40 to DN1000, its
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PVC Pneumatic Butterfly Valve The Huiya PVC pneumatic butterfly valve — UPVC in DIN markets — is a large-bore, wafer-type automated valve for ambient-temperature water, seawater, and wastewater, sizes DN40 to DN500. For pipes above DN100, it’s far lighter and more economical than a flanged ball valve, and its universal slotted-hole flange fits ANSI, DIN,
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PVC Flanged Pneumatic Ball Valve The Huiya PVC flanged pneumatic ball valve — UPVC in DIN-standard markets — is a large-bore, full-port automated valve for ambient-temperature water and chemical service, sizes DN15–DN200. Available in ANSI Class 150, DIN PN10, and JIS 10K flange standards, its one-piece molded flange eliminates root leakage — making it ideal
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PPH Flanged Pneumatic Ball Valve The Huiya PPH pneumatic flanged ball valve is a large-bore, full-port automated valve for hot alkaline and corrosive service in chemical, metallurgical, and wastewater applications. Available in ANSI Class 150, DIN PN10, and JIS 10K flange standards and sizes DN15–DN200, its one-piece molded flange eliminates root leakage — the ideal
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PVC Pneumatic True Union Ball Valve The Huiya PVC pneumatic ball valve — also known as a UPVC ball valve in DIN-standard markets — is a true union, full-port automated valve for ambient-temperature water, chemical dosing, and seawater service. Made from UPVC and rated to 60°C and PN16, it delivers excellent corrosion resistance at the
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