4 inch PVC SDR 35 22-1/2 inch Degree Elbow Gasket x Gasket

G1704 WEST SDR35 4 inch 22-1/2° Elbow – Gasket x Gasket PVC Fitting for Gravity Sewer Applications

The G1704 WEST SDR35 22-1/2° Elbow GXG 4 inch is a molded PVC gravity sewer fitting designed to facilitate directional changes in SDR35 piping systems. This elbow provides a 22.5° change in flow direction while maintaining a consistent internal diameter for optimal hydraulic performance. With Gasket x Gasket (GXG) ends, the fitting enables quick, flexible installation using elastomeric seals without solvent welding.

Manufactured to meet SDR35 wall thickness and dimensional standards, this component is commonly used in non-pressure underground drainage systems, including sanitary sewer laterals and stormwater conveyance lines. Its compact angle and dual-gasket ends allow it to fit within system layouts requiring smooth directional shifts without excessive disturbance to trench geometry.

Design and Functional Features

• ✅ SDR35 Rated: Manufactured to meet ASTM D3034 and F1336 standards for gravity-flow, non-pressure sewer systems.
• ✅ 22-1/2° Bend Angle: Used for gradual directional transitions in horizontal or vertical runs, improving alignment with minimal flow resistance.
• ✅ Gasket x Gasket Ends: Includes factory-installed elastomeric seals for push-on connection to pipe or fittings; no solvent welding required.
• ✅ High-Strength PVC Construction: Engineered to resist deformation, chemical attack, and long-term soil loading in buried environments.
• ✅ Code Compliant: Typically acceptable under municipal and state plumbing codes for underground gravity sewer infrastructure.

Technical Specifications

• Model: G1704
• Nominal Size: 4 inch
• Angle: 22.5 degrees
• End Connections: Gasket x Gasket (ASTM F477-compatible)
• Pipe Compatibility: SDR35 PVC (ASTM D3034)

Installation Guidelines

Ensure pipe ends and gaskets are clean and lubricated with an approved pipe lube prior to assembly. Insert pipe to proper insertion depth, verifying that the gasket is evenly seated. Use manufacturer-recommended mandrels or depth gauges for alignment when necessary. The fitting should be installed in accordance with ASTM D2321 trenching and backfill standards to maintain joint integrity and structural support.

Typical Use Cases

This elbow is typically installed in underground sewer systems for residential subdivisions, commercial properties, and municipal drainage infrastructure. It is commonly used at grade changes, horizontal offsets, or junction boxes where minor directional changes are needed without introducing sharp flow transitions.

Engineering Insight

SDR35 fittings strike a balance between wall thickness and flexibility, making them well-suited for gravity sewer networks subject to soil movement and minor settlement. Gasketed joints provide some angular deflection, reducing stress on the pipe system during installation and long-term operation.

The G1704 WEST SDR35 22-1/2° Elbow GXG 4 inch 7036 is a reliable, specification-grade solution for directional changes in gravity sewer piping systems requiring durable, leak-resistant joints and simplified field assembly.