Pool Unions & Union Kits

Unions let you disconnect pumps, filters, heaters and salt cells from the plumbing without cutting pipe. Shop pump union kits, heater unions, filter bulkhead unions, salt cell unions and union O-rings for Pentair, Hayward, Jandy, Sta-Rite and Raypak equipment in 1.5", 2", 2.5" and 3" sizes.

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Union kits are specific to the equipment they connect to, including the thread type (buttress or standard) and pipe size. Check the part number in each listing against your equipment, or tell us your pump, filter or heater model and pipe size and we will match the correct kit.

Leaking union? Often only the O-ring needs replacing. Call 725-205-1783 and we can help you figure out which part you need. Nationwide shipping and same-day pickup in Henderson, NV.

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Pumps
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Filters
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Heaters
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Automation
Salt Systems
Salt Systems
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Pool Cleaners
Pool & Spa Lights
Pool & Spa Lights
Pool Plumbing & Valves
Pool Plumbing & Valves

25 products

Pentair and Sta-Rite 2" Slip Half Union Kit | PKG -188Z by Pool Supply Depot
In stock
$34.99 $45.00
Pentair and Sta-Rite 2" Slip Half Union Kit | PKG -188Z
Save $10.01
Pentair IntelliFlo3 3HP 2"/2.5" Union Kit 410028Z
Low stock: only 1 left
$49.65
Pentair IntelliFlo3 3HP 2"/2.5" Union Kit | 410028Z
Pentair 3" Union Kit for 3HP IntelliFlo3 Pump | 410029 by Pool Supply Depot
In stock
$78.99 $97.00
Pentair 3" Union Kit for 3HP IntelliFlo3 Pump | 410029
Save $18.01
3/4in. Union Fitting Black Iron by Pool Supply Depot
Low stock: only 2 left
$14.99
3/4in. Union Fitting Black Iron
Jandy SFSM140 Side Mount Sand Filter 37 Inch - product image 1
Low stock: only 1 left
$1,895.00 $1,995.00
Jandy 37" SFSM Side Mount Vertical Sand Filter with Unions | SFSM140
Save $100