EN
PVC Double union ball valve(Double Union)
Raw Material: PVC resin
Standards: DIN, ASTM, Sch 80/40, JIS, BS, D1785, ISO 1452
Size: DN15mm – DN100mm (customizable)
- Overview
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Product Introduction
Baishunxing Pipe Industry The PVC Double Union Ball Valve is the flagship of plastic valves, designed for piping systems requiring frequent maintenance or equipment replacement. With its unique “True Union” design on both ends, users can easily remove the entire valve body simply by loosening the union nuts—no pipe cutting required. This feature, combined with an industrial-grade full-port ball, makes it the premier choice for municipal water treatment, chemical plants, and high-standard irrigation systems. The double union configuration consists of two union connectors—one on each side of the valve body. Each union includes a socket for solvent welding to the PVC pipe, a union nut, and a sealing ring. When the union nuts are tightened, the valve body is compressed against the pipe stubs, creating a leak-proof mechanical seal. When maintenance or replacement is needed, simply loosen both union nuts by hand, and the entire valve body lifts out. A new valve can be installed in minutes without cutting, gluing, or waiting for solvent to cure. The valve features a full-port (full-bore) design, meaning the ball opening matches the internal diameter of the connected pipe. This eliminates flow restrictions and pressure drops commonly found in standard port valves. The ball is precision-ground for perfect roundness, ensuring smooth quarter-turn operation and bubble-tight sealing. Manufactured from high-grade polyvinyl chloride with PTFE (Teflon) seats and EPDM or FKM O-rings, the valve is 100% corrosion-free with no metal parts in contact with the fluid. For engineers and plant managers, the PVC double union ball valve provides a durable, maintainable, and corrosion-proof flow control solution.
Product Parameters
| Raw Material | PVC resin |
| Standards | DIN, ASTM, Sch 80/40, JIS, BS, D1785, ISO 1452 |
| Size | DN15mm – DN100mm (customizable) |
| Pressure Rating | PN8, PN10, PN16, PN20 |
Key Features
The core features of our PVC double union ball valve cover the true union design, full port for maximum flow, superior sealing system, and reinforced ergonomic handle.
True Union / Double Union Design – The valve is equipped with union connectors on both ends for a modular piping system. This design significantly simplifies the cleaning, inspection, and replacement of pumps, filters, and precision instruments downstream of the valve. No pipe cutting, no solvent welding, and no system draining beyond the valve body are required for valve replacement.
Full Port for Maximum Flow – The full-port design matches the internal diameter of the pipe, ensuring near-zero pressure drop and maximizing overall system pumping efficiency. Unlike reduced-port valves that create flow restrictions, our full-port ball valve maintains the same cross-sectional area as the pipeline itself.
Superior Sealing System – The valve features PTFE (Teflon) seats and EPDM or FKM double O-rings. This combination ensures smooth quarter-turn operation and a 100% leak-proof seal in both high and low-pressure conditions. The PTFE seats provide low friction and excellent chemical resistance. The double O-rings prevent any leakage past the stem.
Reinforced Ergonomic Handle – The thickened handle offers a comfortable, non-slip grip and is UV-resistant for long outdoor service life. On specific models, the handle can be removed to serve as a tool for adjusting the internal seal carrier, allowing field adjustment of seat compression without special tools.
True Union / Double Union Design – The valve is equipped with union connectors on both ends for a modular piping system. This design significantly simplifies the cleaning, inspection, and replacement of pumps, filters, and precision instruments downstream of the valve. No pipe cutting, no solvent welding, and no system draining beyond the valve body are required for valve replacement.
Full Port for Maximum Flow – The full-port design matches the internal diameter of the pipe, ensuring near-zero pressure drop and maximizing overall system pumping efficiency. Unlike reduced-port valves that create flow restrictions, our full-port ball valve maintains the same cross-sectional area as the pipeline itself.
Superior Sealing System – The valve features PTFE (Teflon) seats and EPDM or FKM double O-rings. This combination ensures smooth quarter-turn operation and a 100% leak-proof seal in both high and low-pressure conditions. The PTFE seats provide low friction and excellent chemical resistance. The double O-rings prevent any leakage past the stem.
Reinforced Ergonomic Handle – The thickened handle offers a comfortable, non-slip grip and is UV-resistant for long outdoor service life. On specific models, the handle can be removed to serve as a tool for adjusting the internal seal carrier, allowing field adjustment of seat compression without special tools.
Product Advantages
The product advantages of our PVC double union ball valve focus on 100% total corrosion resistance, tool-free maintenance, industrial grade quality, and global compatibility.
100% Total Corrosion Resistance – The valve is 100% corrosion-free with no metal parts in contact with the fluid. This ensures zero rust and resistance to a wide range of acids, bases, and salts. Unlike metal ball valves that corrode at stems, seats, or threaded connections, our polyvinyl chloride valve remains chemically inert.
Tool-Free Maintenance – Hand-tightened union nuts provide a perfect seal, drastically reducing labor and downtime costs for future maintenance. No wrenches, no pipe cutters, no solvent cement, and no cure time are required to remove and replace the valve body. One person can complete a valve replacement in under five minutes.
Industrial Grade Quality – The valve is produced on our newest automated precision lines. The ball is finely ground for perfect roundness, ensuring consistent sealing contact with the PTFE seats. Every valve undergoes 100% factory pressure testing to ensure compliance with rated pressure class before shipment.
Global Compatibility – Our PVC double union ball valve is fully compatible with ANSI (Sch 80), DIN (PN10/16), and JIS (10K) international standards. The socket ends match standard PVC pipe dimensions from all major manufacturers worldwide. Additional advantages include quarter-turn operation for rapid open/close response, clear visual indication of valve position (handle aligned with pipe is open, perpendicular is closed), and lightweight construction for easy handling. The reinforced handle withstands repeated operation without cracking or loosening. The PTFE seats provide consistent torque over thousands of cycles, unlike rubber seats that degrade or swell. For maintenance managers, the true union design means pump and filter servicing no longer requires cutting into the pipeline. For plant engineers, the corrosion resistance eliminates valve failure due to rust or chemical attack. Our PVC double union ball valve delivers reliable, maintainable flow control for any polyvinyl chloride piping system.
100% Total Corrosion Resistance – The valve is 100% corrosion-free with no metal parts in contact with the fluid. This ensures zero rust and resistance to a wide range of acids, bases, and salts. Unlike metal ball valves that corrode at stems, seats, or threaded connections, our polyvinyl chloride valve remains chemically inert.
Tool-Free Maintenance – Hand-tightened union nuts provide a perfect seal, drastically reducing labor and downtime costs for future maintenance. No wrenches, no pipe cutters, no solvent cement, and no cure time are required to remove and replace the valve body. One person can complete a valve replacement in under five minutes.
Industrial Grade Quality – The valve is produced on our newest automated precision lines. The ball is finely ground for perfect roundness, ensuring consistent sealing contact with the PTFE seats. Every valve undergoes 100% factory pressure testing to ensure compliance with rated pressure class before shipment.
Global Compatibility – Our PVC double union ball valve is fully compatible with ANSI (Sch 80), DIN (PN10/16), and JIS (10K) international standards. The socket ends match standard PVC pipe dimensions from all major manufacturers worldwide. Additional advantages include quarter-turn operation for rapid open/close response, clear visual indication of valve position (handle aligned with pipe is open, perpendicular is closed), and lightweight construction for easy handling. The reinforced handle withstands repeated operation without cracking or loosening. The PTFE seats provide consistent torque over thousands of cycles, unlike rubber seats that degrade or swell. For maintenance managers, the true union design means pump and filter servicing no longer requires cutting into the pipeline. For plant engineers, the corrosion resistance eliminates valve failure due to rust or chemical attack. Our PVC double union ball valve delivers reliable, maintainable flow control for any polyvinyl chloride piping system.
Typical Applications
The typical applications of our PVC double union ball valve span water treatment, chemical plants, pools and spas, and modern agriculture.
Water Treatment – The valve is used in wastewater treatment, seawater desalination, and ultra-pure water transport. The corrosion resistance handles aggressive fluids, while the true union design allows sensor and instrument removal without system shutdown.
Chemical Plants – The valve provides corrosive chemical transport and flow control. Acids, bases, and aggressive solvents flow through the valve without attacking the polyvinyl chloride body or PTFE seats.
Pools & Spas – The valve is installed in circulation filtration systems and pump room connections. The full-port design maintains high flow rates for pool pumps, and the union ends simplify seasonal equipment removal. Modern Agriculture – The valve serves smart irrigation and fertilization systems. Farmers can isolate sections of the irrigation network for repair or winterization without cutting buried lines. Additional applications include aquaculture water recirculation, industrial cooling water lines, and food processing fluid handling. Our PVC double union ball valve provides reliable, corrosion-proof, easily maintainable flow control across all these demanding environments.
Water Treatment – The valve is used in wastewater treatment, seawater desalination, and ultra-pure water transport. The corrosion resistance handles aggressive fluids, while the true union design allows sensor and instrument removal without system shutdown.
Chemical Plants – The valve provides corrosive chemical transport and flow control. Acids, bases, and aggressive solvents flow through the valve without attacking the polyvinyl chloride body or PTFE seats.
Pools & Spas – The valve is installed in circulation filtration systems and pump room connections. The full-port design maintains high flow rates for pool pumps, and the union ends simplify seasonal equipment removal. Modern Agriculture – The valve serves smart irrigation and fertilization systems. Farmers can isolate sections of the irrigation network for repair or winterization without cutting buried lines. Additional applications include aquaculture water recirculation, industrial cooling water lines, and food processing fluid handling. Our PVC double union ball valve provides reliable, corrosion-proof, easily maintainable flow control across all these demanding environments.
