1-1/4 inch PVC Schedule 40 Union with O-Ring Plastic x Plastic

PVC Schedule 40 Union PXP 1-1/4" with O-Ring – Designed for Removable Piping Connections

The PVC S40 Union PXP 1-1/4" with integrated O-ring is a two-part mechanical fitting designed to facilitate system disassembly and reassembly without compromising seal integrity. This union provides a reliable, leak-resistant joint for solvent-welded plastic systems and is commonly utilized in piping layouts requiring periodic maintenance or equipment access.

Its Schedule 40 body ensures adequate wall thickness for pressure and drainage systems operating under standard residential and commercial parameters. The internal elastomeric O-ring, typically made from EPDM, supports axial sealing during tightening while maintaining the flexibility needed for field servicing or system reconfiguration.

Functional Benefits

• ✅ Removable Joint Design: Allows for disconnection and reconnection without cutting pipe, streamlining system access and component replacement.
• ✅ Integrated O-Ring Seal: Provides a compression-based seal independent of solvent welds, minimizing risk of leaks under pressure fluctuations.
• ✅ Schedule 40 Rated: Suitable for systems conforming to ASTM D2466 and D1784 specifications for potable water and drainage applications.
• ✅ Dimensionally Consistent: Manufactured to precise tolerances for compatibility with standard IPS pipe sizing and components.
• ✅ Corrosion-Resistant Material: Inert to a wide range of fluids, including chlorinated water and mild chemical solutions.

Technical Specifications

• Nominal Size: 1-1/4 inch
• Fitting Type: Union (Plastic x Plastic)
• Material: PVC, Type I, Grade 1 (per ASTM D1784)
• Wall Rating: Schedule 40
• Seal: EPDM O-Ring for mechanical compression sealing

Installation Considerations

Union ends are joined via solvent welding to the piping system using standard PVC primer and cement. The union nut is hand-tightened to compress the O-ring and form a pressure-resistant seal. Pipe ends must be properly deburred and cleaned prior to bonding. Follow all local code requirements regarding pressure ratings, materials, and system configuration.

Application Scope

This union fitting is commonly used in pump manifolds, equipment isolation points, filtration loops, and any installation requiring scheduled service or component replacement. It is suitable for potable water, light chemical processing, and non-potable plumbing lines in residential, commercial, and light industrial systems.

Material Note

EPDM O-rings are compatible with most water-based systems but may not be suitable for certain oils, hydrocarbons, or high-temperature applications. Always confirm chemical compatibility based on specific fluid and environmental exposure.

The PVC S40 Union PXP 1-1/4" with O-ring is a code-compliant, serviceable connection point ideal for systems requiring both reliability and ease of maintenance within Schedule 40 pressure-rated installations.