1-1/4 in. PVC SCH-40 True Union Ball Check Valve Socket-Type ASTM D2466/F1970 One-Way Flow Control Valve Fitting

247Garden 1-1/4-Inch PVC True Union Ball Check Valve – Socket-Type | ASTM D2466 / F1970 Certified | Heavy-Duty One-Way Flow Control Valve for High-Performance Irrigation, Plumbing, and Aquatic Systems

The 247Garden 1-1/4-Inch PVC True Union Ball Check Valve Socket-Type is a professional-grade, one-way flow control fitting designed for medium-to-large plumbing systems where backflow prevention is critical. Built to meet or exceed ASTM D2466 (fittings) and ASTM F1970 (valves) standards, this valve provides unmatched durability, serviceability, and flow efficiency in systems that demand reliable pressure control and chemical resistance.

Ideal for commercial irrigation zones, aquaponic loops, pump discharge lines, swimming pool systems, and high-capacity water filtration setups, this precision-molded valve features a true union design that allows full inline disassembly for cleaning or maintenance without requiring pipe cuts or system downtime. The internal free-floating ball mechanism provides quiet, non-slam backflow protection, while the EPDM O-ring seals ensure long-lasting, leak-proof performance.

Product Specifications:

• Size: 1-1/4 inch nominal

• Connection Type: Socket/Slip (solvent weld into Schedule 40 PVC piping)

• Material: Industrial-grade white Schedule 40 PVC w/EPDM O-Ring Seal

• Seal Material: EPDM (chemical- and UV-resistant elastomer)

• Standards Compliance: ASTM D2466 (PVC fittings), ASTM F1970 (valves)

• Max Operating Pressure: 150 PSI (non-shock, at 73°F)

• Temperature Range: 33°F to 140°F

• Flow Control: One-directional (check valve functionality)

• Installation Orientation: Vertical preferred; horizontal allowed with proper pressure differential

9-Piece Professional Assembly Includes:

1. (2x) PVC Socket End Connectors: Designed to solvent-weld directly to 1-1/4" Schedule 40 PVC pipe. Creates a permanent, pressure-rated connection.

2. (2x) Union Nuts: Threaded union collars secure the end connectors to the valve body and allow fast, tool-free access to the internal components.

3. (1x) Reinforced PVC Valve Body: Thick-walled, precision-molded housing built for high-flow conditions and long service life in both indoor and outdoor applications.

4. (1x) Free-Floating PVC Ball: Acts as the internal check mechanism. Moves freely under flow pressure and seats automatically under backflow to stop reverse flow.

5. (1x) Gland (Ball Retainer): Holds the ball in place and ensures guided, smooth vertical movement during operation for reduced wear and turbulence.

6. (1x) Stem O-Ring: Provides an internal pressure seal around the stem region to maintain system integrity.

7. (1x) EPDM Main O-Ring Seal: Positioned at the ball seat, this seal ensures a tight closure under backflow conditions and resists degradation from chlorine, UV, and mild chemicals.

How It Works:

The 247Garden 1-1/4" True Union Ball Check Valve provides a gravity- and pressure-activated backflow seal that ensures water or fluid flows in only one direction:

• Open Position (Forward Flow): When water pressure flows from inlet to outlet, the internal ball lifts off the EPDM seat, allowing full-bore flow through the valve body with minimal resistance.

• Closed Position (Reverse Flow): If the flow stops or reverses, gravity and backpressure push the ball back into the EPDM-sealed seat, instantly sealing the passage and preventing reverse contamination or siphoning.

• True Union Access: Loosening the union nuts allows you to completely remove the valve body for servicing, cleaning, or internal part replacement—without disrupting surrounding pipework.

Why Choose a True Union Ball Check Valve:

The 247Garden 1-1/4" PVC True Union Ball Check Valve is designed for high-usage, high-capacity environments where ordinary one-piece or swing-style check valves simply won’t last or perform as efficiently:

• True Union = Total Serviceability: With threaded union ends, the valve body can be removed without cutting pipes—saving time, labor, and cost on system maintenance.

• Quiet, Reliable Operation: The free-floating ball design eliminates mechanical slamming or chattering found in spring and flap-style check valves.

• No Corroding Parts: 100% PVC construction with EPDM seals—no metal components to rust or degrade, even in chemically treated or saltwater systems.

• Precision Fit, Zero Leaks: Engineered for a tight seal every time, even under high-volume usage.

• ASTM Certified: Manufactured to meet ASTM D2466 (fittings) and ASTM F1970 (valve performance), ensuring dimensional consistency and quality under real-world operating conditions.

Recommended Applications:

• Greenhouse main irrigation lines

• Aquaponics and hydroponic reservoir returns

• Swimming pool pump discharge or drain isolation

• Rainwater harvesting and storage tank systems

• Booster and circulation pump check valve setups

• Water filtration return lines

• Agricultural chemical injection systems

Why 247Garden?

At 247Garden, we combine engineering excellence with real-world plumbing knowledge. Our valves and fittings are built to perform, tested to meet national standards, and trusted by growers, contractors, and system installers across the country. Whether you're managing a large-scale irrigation setup or upgrading your pool plumbing, our 1-1/4-Inch PVC True Union Ball Check Valve delivers maximum reliability with minimal maintenance.