1 inch PVC Schedule 40 Union with O-Ring Plastic x Plastic

1" PVC Schedule 40 Union PXP – O-Ring Seal, Socket End, NSF-Certified

The 1" PVC Schedule 40 Union (Socket x Socket) with O-Ring Seal is a two-piece mechanical fitting designed for joining sections of rigid PVC piping while enabling future disassembly. Engineered for pressure and non-pressure systems, this union provides a reusable joint with a reliable elastomeric seal suitable for both cold water distribution and low-pressure chemical applications.

Manufactured from rigid Type I Grade I polyvinyl chloride in compliance with ASTM D1784, this union meets NSF/ANSI 61 standards for potable water contact and offers excellent corrosion resistance in a variety of system environments. The EPDM O-ring provides a watertight seal under moderate pressure without the need for solvent welding or adhesives at the union interface.

Technical Specifications

• Material: PVC Type I, Grade I (ASTM D1784, Cell Class 12454)
• Nominal Size: 1 inch
• Connection Ends: Socket x Socket (solvent weld to pipe)
• Seal Type: EPDM O-Ring (removable and replaceable)
• Pressure Rating: 150 PSI @ 73°F (de-rated at elevated temperatures)
• Certifications: NSF/ANSI 61 & 372, UPC listed

Product Features

• ✅ Disassemblable Connection: Allows for convenient maintenance or system modification without cutting pipe.
• ✅ Secure Sealing Mechanism: O-ring design ensures a tight seal under pressure while accommodating minor thermal expansion.
• ✅ Chemical Resistance: Suitable for water treatment systems, light industrial piping, and irrigation systems with compatible media.
• ✅ Solvent Weld Ends: Accepts Sch 40 PVC pipe using standard cement and primer procedures.
• ✅ Code-Compliant Construction: Meets all applicable plumbing standards for potable water systems.

Typical Applications

This 1" union is commonly used in cold potable water piping, irrigation systems, swimming pool installations, and chemical distribution systems. It is ideal for use where future maintenance, valve replacement, or equipment servicing may require disconnection without system shutdown.

Installation Guidelines

Solvent weld both ends to properly prepared pipe using ASTM F656 primer and ASTM D2564 PVC cement. Ensure the O-ring is seated in its groove and the union nut is tightened to hand torque. Do not overtighten. Verify proper alignment and avoid axial loading that may affect sealing integrity.

Conclusion

The 1" PVC Schedule 40 PXP Union with O-Ring provides a reliable and code-compliant solution for serviceable PVC pipe joints. Its corrosion-resistant material, disassemblable design, and EPDM sealing capability make it a versatile fitting in potable and non-potable water distribution systems where mechanical joint separation is required.