1/2 inch PVC Schedule 40 Union with O-Ring Plastic x Plastic

1/2 inch PVC Schedule 40 Union – PXP O-Ring Type for Demountable Sealing

The 1/2 inch PVC S40 Union PXP with O-Ring is engineered to facilitate easy disassembly and reconnection of pipe sections without requiring cutting or solvent welding. This Schedule 40 pressure-rated union is commonly used in applications requiring maintenance access, modular assemblies, or equipment isolation within water distribution systems.

Constructed from rigid polyvinyl chloride (PVC), the union includes an elastomeric O-ring that provides a compression seal when the joint is torqued into place. Its slip x slip (PXP) configuration allows for solvent-welded installation on both ends, while the union nut offers field-replaceable access without compromising system integrity.

Performance Features

• ✅ Schedule 40 Construction Rated for moderate pressure systems typically used in potable water or irrigation networks.
• ✅ EPDM O-Ring Seal Provides a watertight joint that allows disassembly without disturbing adjacent piping.
• ✅ Solvent Weld Ends Slip connections on both ends enable permanent bonding to standard PVC pipe.
• ✅ Corrosion Resistance Inert to most acids, bases, salts, and organic solvents found in plumbing and mechanical systems.
• ✅ Material Compliance Manufactured from NSF-61 certified PVC suitable for potable water use.

Specifications

• Size: 1/2 inch nominal
• Connection Type: Slip x Slip (PXP)
• Pressure Class: Schedule 40
• Seal Type: EPDM O-ring
• Material: Rigid PVC (lead-free formulation)
• Standards: Meets ASTM D2466 and NSF/ANSI 61

Common Applications

This union is used in systems requiring frequent maintenance access or modular assembly, including:

• Potable water service lines
• Cold water distribution in residential and commercial systems
• Light-duty chemical process systems (within PVC material compatibility limits)

Installation Notes

Ensure that mating pipe ends are properly prepped and primed prior to solvent cementing. Allow sufficient cure time as per manufacturer specifications. Hand-tighten the union nut until firm, then apply an additional 1/4–1/2 turn using a strap wrench if needed. Do not overtighten to avoid O-ring damage. EPDM seals should be inspected regularly in systems subject to high cycling or UV exposure.

Compliance Statement

This union fitting is lead-free and conforms to current potable water codes in accordance with the Safe Drinking Water Act (SDWA). When installed as specified, it supports both code compliance and operational flexibility in Schedule 40 piping systems.

The PVC S40 Union PXP 1/2 inch O-Ring Type is a reliable solution for professional installations requiring field-servicable fittings and consistent hydraulic performance across residential and light commercial applications.