Straight-line connections are a core component of any reliable pool plumbing system, especially on primary circulation and return lines. The American Granby Schedule 40 1 1/2” PVC Coupling (Slip x Slip) is a professional-grade fitting designed to permanently join two sections of 1 1/2” PVC pipe into a single, continuous run.

This coupling is widely used in pool and spa plumbing systems for repairs, extensions, and new installations where 1 1/2” pipe is specified. It is commonly found on suction lines, return plumbing, equipment pad layouts, and underground piping. Manufactured specifically for pool environments, it delivers consistent fit, pressure reliability, and long-term resistance to pool chemicals and outdoor exposure.

This is not a general plumbing fitting—it is built for real pool circulation systems.

Why 1 1/2” PVC Couplings Matter in Pool Plumbing

1 1/2” PVC is one of the most common pipe sizes used in residential pool systems. Any joint failure at this size can compromise circulation, cause leaks, and require costly repairs.

The American Granby 1 1/2” PVC coupling is used to:

• Join two straight sections of 1 1/2” PVC pipe

• Repair cracked, cut, or damaged plumbing

• Extend existing suction or return lines

• Maintain proper alignment on equipment pads

Using a true Schedule 40 coupling ensures consistent internal diameter and dependable long-term performance.

Slip x Slip Connections for Permanent Installations

This fitting features Slip x Slip (socket x socket) connections, allowing both pipe ends to be solvent-welded directly into the coupling.

Slip connections provide:

• Strong, permanent joints

• Smooth internal flow continuity

• Reliable, leak-resistant performance when installed correctly

Once cemented, the coupling becomes a fixed part of the plumbing system, suitable for exposed and underground installations.

Schedule 40 PVC Built for Pool & Spa Systems

Manufactured from rigid Schedule 40 PVC, this coupling is pressure-rated for residential and light commercial pool systems. It is fully compatible with standard 1 1/2” Schedule 40 PVC pipe used throughout pool plumbing.

The material resists:

• Chlorinated and chemically treated water

• Temperature fluctuations

• Cracking and deformation under pressure

• Long-term outdoor and underground exposure

This ensures dependable performance throughout the life of the pool system.

Common Pool & Spa Applications

The American Granby SCH 40 1 1/2” PVC Coupling is commonly used for:

• Pool suction and return plumbing

• Equipment pad layouts

• Filter, heater, and chlorinator connections

• Underground plumbing repairs

• New pool construction and replumbing projects

Anywhere two straight sections of 1 1/2” pool plumbing must be securely joined, this coupling is the correct solution.

Trusted by Pool Service Professionals

Pool professionals rely on properly manufactured couplings to avoid leaks, weak glue joints, and callbacks. Inferior fittings can compromise system integrity and increase service issues.

American Granby fittings are trusted because they provide:

• Precise dimensions for proper pipe fit

• Strong, consistent solvent-weld joints

• Proven durability in real-world pool environments

This coupling is a standard component in professional pool plumbing installations and repairs.

Specifications

Installation Notes

• Designed for use with 1 1/2” Schedule 40 PVC pipe

• Use approved PVC primer and cement for pool plumbing

• Dry-fit pipes before cementing to confirm alignment

• Allow full cure time before pressurizing the system

Proper installation ensures leak-free performance and long-term reliability.

Buy with Confidence from Benchmark Pool Supply

When you purchase the American Granby SCH 40 1 1/2” PVC Coupling SL x SL from Benchmark Pool Supply, you’re buying professional-grade pool plumbing components selected for real-world service conditions.

You receive:

• Genuine American Granby fittings

• Parts intended specifically for pool and spa systems

• Fast shipping from a knowledgeable pool supply team

• Support from professionals who understand pool plumbing

This is the same type of coupling trusted by pool builders and service technicians—not generic plumbing substitutes.