True union ball valves are the most versatile shut-off and flow-control valve in a plastic piping system — their two union connections let you remove the valve for service without cutting the line. Huiya manufactures pneumatic and manual true union ball valves in all four engineering plastics: UPVC, CPVC, PPH and PVDF, so you can match the valve to your media and temperature, from ambient water to concentrated acids. Built to ANSI, DIN and JIS standards with full-port flow, they suit water treatment, chemical dosing and general process lines. Browse the range below, or send us your media and size for a recommendation.
True union ball valves for corrosive and high-purity fluid handling, available in four thermoplastics — UPVC, CPVC, PPH, and PVDF — in both pneumatic (actuated) and manual versions. The true union (double-union) design lets you remove the valve from the line for service or replacement without cutting pipe, making it the go-to choice for chemical dosing, water and wastewater treatment, electroplating, and mining process lines.
All valves are full-port for low pressure drop, fitted with EPDM or FKM seals matched to your media, and supplied to ANSI Schedule 80, DIN PN, and JIS connection standards. Pneumatic versions come with double-acting or spring-return actuators sized to your operating torque, and can be delivered with solenoid valves, positioners, and limit switches as a complete assembly.
As a factory-direct manufacturer, we supply OEM, project, and distributor quantities worldwide, with custom configurations and short lead times.
Need a larger-bore or higher-pressure valve? See our flanged ball valves. New to specifying? Read our complete guide to choosing a plastic ball valve and check your medium in the chemical resistance checker. Browse all plastic valves, or if a valve is leaking, see how to fix a leaking PVC ball valve.
Available with EPDM or Viton (FKM) seats and O-rings. Not sure which fits your fluid? See which valve seal fits your fluid.
Request a quote with your size, material, and media, and our engineers will recommend the right valve and actuator for your application.
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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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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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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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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PPH Pneumatic True Union Ball Valve The Huiya PPH pneumatic ball valve is a true union, full-port automated valve engineered for hot alkaline and corrosive fluids — the applications where PVC, CPVC, and even PVDF reach their limits. Built from polypropylene homopolymer (PPH) and rated to 85°C, it is the material of choice for caustic
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The Huiya CPVC pneumatic true union ball valve is a true union, two-piece automated valve built for corrosive and high-temperature fluid control in chemical processing, water treatment, electroplating, and mining. Rated up to 93°C (200°F) and PN16, it combines CPVC’s chemical resistance with the fast, reliable on/off control of a pneumatic actuator — and a
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