Pump Unions, Heater Unions & O-rings
We offer a variety of pump unions (1" through 2.5" pump thread), heater split nut unions, heater gaskets, and pump union o-rings.
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400-1990
Commonly used on Waterway Tiny Might Pumps
Pump Connection - 1" Thread (Measures 1-7/8" on threads.)
Pipe Connection - 1" Pipe (1" pipe measures 1-5/16" O.D.) -
400-4060
Pump Connection - 1-1/2" Thread (measures 2-5/16" on threads)
Pipe Connection - 1-1/2" Pipe (1-1/2" pipe measures 1-7/8" O.D.) -
400-9230
Pump Connection - 2" Thread (measures 3" on threads)
Pipe Connection - 1-1/2" Slip Pipe -
400-5570
Pump Connection - 2" Thread (measures 3" on threads)
Pipe Connection - 2" Slip Pipe (2" pipe measures 2-3/8" O.D.) -
RD401-1020
Pump Connection - 2" Thread (measures 3" on threads)
Pipe Connection - 2" Spig (glues into 2" fitting) -
400-5990
Pump Connection - 2-1/2" Thread (measures 3-5/8" on threads)
Pipe Connection - 2" Pipe (2" pipe measures 2-3/8" O.D.) -
52202250
Pump Connection - 2-1/2" Thread (measures 3-5/8" on threads)
Pipe Connection - 2-1/2" Pipe (2-1/2" pipe measures 2-7/8" O.D.) -
400-6010
Pump Connection - 2-1/2" Thread (measures 3-5/8" on threads)
Pipe Connection - 2-1/2" Pipe (2-1/2" pipe measures 2-7/8" O.D.) -
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415-6010
Use to convert a 2.0" pump thread (measures 3" on threads) to a 2.5" pump union thread (measures 3-5/8" on threads).
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0121109015
Repair Split Nut union - makes it quick and easy to replace cracked, leaky pump union nuts.
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415-5161 SET
Split nut unions are generally used to secure the hot tub heater housing to the spa plumbing. Screws are included. The actual diameter of the inside when closed (thread to thread) is approximately 3.0".
(Sold as a set of 2 complete Split Nuts.)
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415-4021 SET
Split nut unions are generally used to secure the hot tub heater housing to the spa plumbing. Screws are included. The actual diameter of the inside when closed (thread to thread) is approximately 2-5/16".
(Sold as a set of 2 complete Split Nuts.)
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805-0229
O-Ring for 2" pump union. Fits Waterway and others (does not fit Aqua-Flo pump unions).
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711-4030
For 2" heater unions, this flat gasket has a raised o-ring in the center.