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Welcome to the Hot Tub Parts of America Global shop — your international source for hot tub and spa replacement parts. Browse our extensive catalog of pumps, heaters, jets, filters, controls, and accessories from top brands like Waterway, Aqua-Flo, Balboa, Gecko, Jacuzzi®, and many more. We ship worldwide with competitive international shipping rates.
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Pair of 2" Threaded to 1.5" Slip Heater Unions with Gaskets - Adapter Set
HTPOFAmerica
MSRP: $31.99$24.99This component package includes Two (2) Heater Unions with Gaskets - 1 1/2" Slip Side (approximately 2 3/8" ID) X 2" Threaded Side (approximately 3" OD). Each union accepts a 1 1/2" pipe or fitting on the slip end and connects via threading to a 2"...MSRP: $31.99$24.99 -
2" X 1 1/2" Slip Heater Union with Gasket - Installation Guide Video
HTPOFAmerica
MSRP: $15.99$9.99Global offers this adapter-style 1 1/2" Slip (approximately 1 7/8" ID) X 2" (approximately 3" OD on threads) Heater Union complete with Gasket. This union fitting accepts a 1 1/2" pipe or fitting on the slip end while threading onto a 2" Heater Flange...MSRP: $15.99$9.99 -
Set of 2 - 2 Inch Slip x 2 Inch Heater Union with Gaskets | Spa Plumbing Fittings
HTPOFAmerica
$17.99You receive a complete pair of 2 inch Slip connections measuring approximately 2 3/8 inch ID x 2 inch Heater Union connections measuring approximately 3 inch OD, gaskets included. Each union accepts a 2 inch pipe or fitting on the slip end while...$17.99 -
2" Heater Union 2" Slip with Gasket - Spa Heater Connection Fitting
HTPOFAmerica
MSRP: $15.99$9.99This product is a 2" Slip measuring approximately 2 3/8" ID X 2" measuring approximately 3" OD Heater Union with Gasket. This union accepts a 2" pipe or fitting on one end measuring approximately 2 3/8" Outside Diameter and threads onto a 2" Heater...MSRP: $15.99$9.99 -
2-Pack 2" Heater Union Split Nut Kit with Gaskets & Screws - Hot Tub Spa Parts
HTPOFAmerica
MSRP: $21.99$14.99Complete hardware kit containing (2) 2" split nuts with approximately 3" inside diameter, (4) mounting screws, and (2) gaskets designed for connecting 2" heater tubes to heater unions. Each flange-style split nut attaches directly to your heater tube...MSRP: $21.99$14.99 -
2" Heater Union Split Nut Assembly Kit with Gasket (3" ID) - Includes Screws
HTPOFAmerica
MSRP: $12.99$8.99This complete heater connection kit features a 2" heater flange split nut with approximately 3" inner diameter, accompanied by a gasket and (2) mounting screws designed for 2" heater unions that measure roughly 3" edge to edge on the threaded portion...MSRP: $12.99$8.99 -
1.5 Inch Heater Split Nut Assembly Kit (Set of 2) with Gaskets for Spa Hot Tub Union Connection
HTPOFAmerica
MSRP: $18.99$14.49Complete assembly kit containing: (2) 1 1/2 inch heater flange split nuts, (4) mounting screws, and (2) gaskets designed for connecting 1 1/2 inch heater tubes to unions. The threaded union side measures approximately 2 3/8 inches outer diameter.Each...MSRP: $18.99$14.49 -
1.5 Inch Spa Heater Split Nut Assembly Kit with Gasket - Complete Installation Set
HTPOFAmerica
MSRP: $12.99$8.49This complete assembly is a 1 1/2 inch heater split nut kit featuring the split nut component, gasket, and (2) mounting screws designed for 1 1/2 inch heater unions measuring approximately 2 3/8 inches outer diameter. The heater flange split nut securely...MSRP: $12.99$8.49 -
1 1/2" Spa Heater Union O-Ring - 1 7/8" Center to Center Measurement
HTPOFAmerica
MSRP: $7.99$5.99This replacement O-ring is designed for 1 1/2" heater unions and measures 1 7/8" center to center. Engineered to fit the 1 7/8" groove found on most standard 1 1/2" heater unions, this seal creates a watertight connection between your spa heater and...MSRP: $7.99$5.99 -
2 Pack - 2 1/2" Therm Style Heater Union Gaskets for Hot Tub Spa Pump Plumbing
HTPOFAmerica
MSRP: $19.99$14.99This is a pair of 2 1/2" Therm style union gaskets designed for sealing heater or pump unions in hot tub plumbing systems.These gaskets are specifically sized at 3 1/4" O.D. x 2 3/4" I.D. with lip measurement of 3 1/8" center to center. Please verify...MSRP: $19.99$14.99 -
2 1/2" Threaded x 1" 90° Barb Heater Union with Gasket for Hot Tub Spa
HTPOFAmerica
MSRP: $28.99$21.99This component is a 2 1/2" Threaded X 1" 90 Degree Barb Heater Union with Gasket designed for spa heating systems.The barb end accepts 1" ID tubing while the threaded end connects to a 2 1/2" Heater Flange using a 2 1/2" Nut for secure installation...MSRP: $28.99$21.99 -
2" Pump Union Split Nut Emergency Repair Kit (Set of 2) for Hot Tub Spa - Includes Mounting Screws
HTPOFAmerica
MSRP: $49.98$29.99This is a Set of Two (2) 2" Spa Pump Union Split Nut Emergency Repair Kits with each kit containing one split nut plus two mounting screws designed for 2" pump unions. Each replacement split nut features internal threading that measures approximately 3"...MSRP: $49.98$29.99