Waterway Pump Union 2.5" x 2.5" | 400-6010

The Waterway 400-6010 Pump Union is a precision-molded PVC fitting designed to create a secure, serviceable connection on spa and pool pumps requiring a two and one half inch slip by two and one half inch nut configuration. Engineered to fit pump ports measuring roughly three and five eighths inches across the outside diameter, it includes the matching o-ring tailpiece to support reliable sealing and smooth hydraulic performance. Manufactured in the United States by Waterway Plastics, the union is intended for high-flow spa and pool circulation systems where dependable alignment and long-term durability are essential. Its robust construction and service-friendly nut design help streamline pump maintenance while maintaining consistent pressure and leak-free operation.

Highlights

• Two and One Half Inch Slip by Nut Layout: Designed for pumps using a two and one half inch nominal connection size and sized to fit side-discharge ports around three and five eighths inches in outside diameter.

• Included O-Ring Tailpiece: Provides a reliable sealing interface that helps prevent leaks under high-flow and high-pressure spa system conditions.

• Executive Series Compatibility: Tailored for use with Waterway Executive fifty-six frame pump inlet and outlet assemblies, supporting proper fit and alignment.

• Durable PVC Build: Formulated to resist chemical exposure, moisture, and temperature variations common in spa and pool environments.

• Maintenance-Friendly Union: Nut-and-union design allows technicians to disconnect pumps for service without cutting or modifying plumbing.

Additional Info

This FAQ helps online customers verify pump fitment, connection size, and sealing expectations before ordering the Waterway 400-6010 from SOSPool.com. It also explains what to check when it arrives.

Fitment Verification, Pump OD & Plumbing Compatibility

These answers help online shoppers confirm the union matches their pump before checkout.

How do I confirm the 400-6010 is the correct union?

Measure the pump’s inlet or outlet for an outside diameter near 3-5/8 inches and confirm that your plumbing uses 2½ inch fittings. This union is commonly used on Waterway Executive pumps.

Does this union work with side-discharge spa pumps?

Yes. It is designed for high-flow spa pumps with 2½ inch connections and similar OD dimensions.

Does the slip end glue directly to 2½ inch PVC?

Yes. The tailpiece accepts standard 2½ inch pipe for straightforward integration.

Seal Function, Nut Assembly & Operating Performance

These answers help online customers understand installation and performance expectations.

What role does the included O-ring play?

It forms the primary seal between the pump faceplate and the union tailpiece, preventing leaks under pressure.

Does tightening the nut require tools?

Hand-tightening is usually sufficient. A gentle quarter-turn with a strap wrench can improve sealing if needed.

Is the union durable in spa water conditions?

Yes. The PVC construction resists chemical exposure and heat found in spa environments.

Shipping, Arrival Inspection & Installation Prep

These details help SOSPool.com customers after receiving their union.

How is the 400-6010 shipped?

It arrives in protective packaging to prevent cracking or distortion of the slip and nut components.

What should I inspect on arrival?

Check the nut threads, tailpiece opening, and O-ring groove for shipping damage or deformation.

Is the union ready for installation immediately?

Yes. Once glued to the plumbing and seated against the pump, it is ready for service.