Overview
The Hayward True Union Ball Check 3PVC valve is a precision-engineered backflow prevention device designed for critical flow control applications across water treatment, filtration, pump protection, and process piping systems. The Hayward TC Series True Union Ball Check Valves offer versatile and reliable backflow prevention for critical flow control applications. The Safe Block design delivers a square cut seat for positive sealing and seating with minimum back pressure, preventing reverse flow that could damage pumps, filters, or process equipment.
Key Features
- Quick quarter turn shut-off and eliminates the need for unions; allows for easy valve body removal from a piping system without disturbing pipe connections.
- Seal retainer incorporates a fine pitch thread for accurate seat adjustment; reversible PTFE seats—simply remove, turn over and reinstall if worn or scored.
- Double o-ring stem seal for twice the leakage protection.
- Full port design maximizes flow rates.
- Available in PVC (1/4″ – 6″), CPVC (1/2″ – 6″), and PP (1/2″ – 2″); can be installed horizontally or vertically.
- Carries a three-year global warranty and is manufactured by Hayward® Flow Control in the USA.
Technical Specifications
- Material: PVC (ASTM D1784, Cell Classification 12454)
- Pressure Rating: 235 PSI at 70°F
- Operating Temperature: PVC 140°F
- Design: True Union with Safe Block/Sure Block seating
- O-rings: EPDM or FPM
- Seat Type: Square-cut design to ensure proper ball seating
- End Connections: Socket, Threaded, or optional Flanged
- Valve Type: Ball check with free-floating design
- Port Configuration: Full port
- Certifications: NSF / ANSI 61 and NSF / ANSI 372 Listed
Typical Applications
The Hayward True Union Ball Check 3PVC is ideal for:
- Water treatment and municipal water systems
- Swimming pool and spa filtration
- Industrial process piping and circulation loops
- Pump discharge protection against backflow damage
- Filter inlet/outlet protection in HVAC chilled water systems
- Any application requiring sealing at low backpressures.
Compatibility & Replacements
Compatible With
- Standard PVC Schedule 40 piping systems (threaded or socket fusion connections)
- Industrial pump stations and centrifugal pump discharge lines
- Commercial and municipal water distribution networks
- Process water recirculation and cooling circuits
- Filtration systems requiring backflow prevention certification
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. The 3″ size is compatible with most standard Hayward TC Series 3-inch check valve models in PVC with comparable flange or connection types.
Works With
- NSF/ANSI 61 certified water piping systems
- Low-pressure pump protection systems
- Standard PVC Schedule 40 and 80 distribution piping
- Horizontal and vertical installation configurations
- Manual or automatic actuated control systems (manual operation—no electric actuation)
