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.
UPVC diaphragm valves — also known as PVC diaphragm valves — are the economical workhorse for ambient-temperature water and mild chemical service: industrial and RO water, weak acids and alkalis, salt solutions, and seawater. We supply them in true union, flanged, and pneumatic configurations, built from virgin UPVC (unplasticized PVC) and easy to install with […]
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CPVC diaphragm valves bridge the gap between general-purpose UPVC and high-end PVDF: they hold up to hot corrosive media to about 90 °C — hot water, dilute-to-moderate acids, and oxidising bleaches — at a fraction of the cost of fluoropolymer. We supply them in true union, flanged, and pneumatic configurations for hydrometallurgy, metal finishing, and
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PPH Diaphragm Valve PPH diaphragm valves (polypropylene homopolymer) are the value choice for strong alkaline service — high-concentration caustic soda, alkali carbonates, and salt solutions — to about 85 °C. Their toughness stands up to hot caustic and abrasion where other plastics struggle. We supply them in true union, flanged, and pneumatic configurations for chlor-alkali,
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Industrial CPVC Ball Valve (Manual) Industrial CPVC ball valves give you quarter-turn on/off control of hot corrosive and oxidising media to about 90 °C — hot water, dilute-to-moderate acids, and bleach — in a hand-operated valve built for process duty, not domestic plumbing. We make ours from virgin CPVC to Schedule 80 dimensions with a
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UPVC / PVC Ball Valve UPVC ball valves — also known as PVC ball valves — are the economical workhorse for quarter-turn on/off control of ambient-temperature water and mild chemicals: industrial and RO water, weak acids and alkalis, salt solutions, and seawater. We build ours from virgin UPVC (unplasticized PVC) with a PTFE seat, in
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PPH Ball Valve (Manual) PPH ball valves (polypropylene) give you quarter-turn on/off control of hot alkaline media to about 85 °C — high-concentration caustic soda, alkali carbonates, and salt solutions — in a tough, hand-operated valve. We build ours from virgin PPH with a PTFE seat, in true union and flanged configurations for chlor-alkali, alkali
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PPH Butterfly Valve PPH (polypropylene) butterfly valves give you compact, quarter-turn control of large-bore alkaline and salt lines, DN50 to DN500, in wafer and lug bodies with a PPH disc and an EPDM or FKM seat. They hold up to about 85 °C, the tough, economical choice for big-flow isolation and throttling on caustic, brine,
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PVDF Diaphragm Valve PVDF diaphragm valves handle the media that defeat other plastics — concentrated acids, halogens, and high-purity fluids — while the diaphragm design keeps the flow path free of dead space, packing, and contamination. We build ours from 100% virgin PVDF and offer them in true union, flanged, and pneumatic configurations for chemical
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PVDF Butterfly Valve PVDF butterfly valves give you compact, quarter-turn control of large-bore corrosive lines — DN50 to DN500 — in wafer and lug bodies with a PVDF disc and an EPDM or FKM seat. They are the space-saving, economical choice for big-flow isolation and throttling where a ball or diaphragm valve would be bulky
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PVDF Manual Ball Valve PVDF ball valves (manual) give you quarter-turn on/off control of the most aggressive media — concentrated acids, halogens, and ultrapure fluids — in a compact, hand-operated valve that needs no power or air. We build ours from 100% virgin PVDF with a PTFE seat, in true union and flanged configurations for
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