Waterway Plastics 400-5161 Split Nut - 2 inch

What This Part Is Used For
The Waterway Plastics 400-5161 split nut is used to secure 2 inch union-style plumbing connections in pool and spa systems. Its split design allows installation or removal without fully disconnecting adjacent plumbing. This type of nut is commonly found on serviceable connections where access is limited. It supports proper gasket compression while maintaining system serviceability.

Why This Part Matters
Split nuts are often replaced after cracking, thread wear, or repeated service cycles. A damaged nut can prevent even gasket compression and lead to persistent leaks. Using the correct split nut restores proper sealing without requiring plumbing rework. This saves labor time and reduces stress on connected components.

Key Features and Specifications

• Manufacturer part number 400-5161
• Split-style union nut
• 2 inch plumbing size
• Used on serviceable union connections
• Allows installation without full disassembly
• Compresses internal union gasket
• OEM Waterway Plastics component

Installation and Fitment Guidance
This split nut installs around the union tailpiece and is tightened evenly to compress the gasket. Care should be taken to align both halves properly before tightening. Over-tightening can damage threads or the nut itself. Confirm by manufacturer part number before ordering.

About the Waterway Plastics Brand
Waterway Plastics manufactures a wide range of pool plumbing hardware used by builders and service professionals. Their union components are designed for repeated service and reliable sealing. OEM fitment reduces installation issues and callbacks. Waterway parts are trusted across residential and commercial systems.

Common Service Context
This split nut is typically encountered during leak repairs or equipment servicing where access is restricted. Technicians often replace it when standard union nuts cannot be installed without cutting pipe. It is commonly paired with new union gaskets.