Description
OEM Waterway 2-Inch Heater Split Nut 400-5161B is a high-strength replacement component designed to secure plumbing connections in pool and spa heating systems. Constructed from durable PVC, this split nut offers reliable performance in chemically treated and high-moisture environments. It is compatible with most 2-inch heater tubes and features pre-drilled holes with included screws for fast and easy installation. Designed to form a tight, leak-resistant seal, this nut helps prevent water loss and supports efficient heater operation in both residential and commercial systems.
Highlights
-
Fits Most 2″ Heater Tubes: Specifically made to connect securely with standard 2-inch heater plumbing, ensuring wide compatibility across heating systems.
-
Heavy-Duty PVC Construction: Crafted from pool-grade materials that withstand heat, pressure, and prolonged exposure to chlorine and water.
-
Seals Against Leaks: Provides a compression fit around the plumbing connection, helping to eliminate leaks and preserve system pressure.
-
Screw-In Installation: Comes with two screws for a secure, no-hassle install that tightens the nut firmly in place with minimal tools.
-
Reliable for Long-Term Use: Built for repeated exposure to pool environments, making it a lasting solution for maintenance or repair needs.
Includes
- (1) Split Nut
- (2) Screws
Compatibility
- Compatible with most 2″ heater tubes
Additional Info
Find the Right Split Nut for 2″ Heater Tubes
waterway 400-5161b split nut for pool heater
2 inch pvc split nut with screws for spa heater line
compatible split nut for most 2 inch heater tubes
secure pool heater plumbing with 400-5161b nut
spa heater connection nut for leak-free seal
Real Maintenance and Repair Search Queries
heater split nut cracked replace with 400-5161b
leaking heater line? install new split nut fitting
how to secure 2 inch pvc plumbing to pool heater
missing nut on heater tube order waterway 400-5161b
install heater pipe nut with included screws
Specs and Compatibility Lookups
fits most 2 inch diameter heater tubes and unions
includes screws for simple nut replacement
made from chemical-resistant pvc for pool use
split nut design allows install without cutting pipe
works on both residential and commercial systems
Diagram

Explore more from our collection.





Reviews
There are no reviews yet.