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Plumbing
Fixtures
Faucets
Toilets, Urinals & Parts
Garbage Disposals
Tubs & Showers
Sinks & Wash Fountains
Water Filters & Dispensers
Pipe & Fittings
Copper Fittings
ABS Pipe Fittings
Pipe Fittings
Pipe, Tubing & Hoses
Pipe Flanges
Valves & Controls
Valves & Actuators
Pumps
Watering, Irrigation & Drainage
Hardware & Accessories
Gaskets & Packing
Clamping, Workholding & Positioning
Plumbing Hardware
Hangers, Struts & Fasteners
Bathroom Hardware
Hirsch Outlet
Water Heaters
Residential Water Heaters
Residential Gas Tank
Residential Gas Tankless
Residential Heat Pump
Residential Electric Tank
Commercial Water Heaters
Commercial Electric Tank
Commercial Gas Tank
Commercial Heat Pump Tank
Commercial Hybrid Tankless
Hirsch Outlet
Tools and Hardware
Tools & Supplies
Tapes
Packaging & Shipping Supplies
Testing & Measuring
Hirsch Outlet
HVAC and More
HVAC & Air Quality
HVAC Equipment
HVAC Controls
Venting
HVAC Supplies & Accessories
More Products
Safety & Security
Chemicals, Lubricants & Sealants
Electrical
R410 Inventory
Hirsch Outlet
Brands
Featured Brands
American Water Heaters
Bradford White®
DELTA®
Fluidmaster®
Insinkerator®
KD Navien®
Kohler®
Milwaukee®
Moen®
Noritz®
RIDGID®
Rinnai®
Sloan®
Toto®
Viega
All Brands
Pro Services
HirschNow
HirschNow
HirschText
WillCall30
DeliveryNow
MobilePay
90 Minute Delivery
Rebates
Pricing Updates
Credit Application
Promotions
February Specials
Weekly Specials
American Standard
Bradford White
Rinnai
View All Promotions
About Us
About
Locations
Careers with Hirsch
Outlet
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Categories
Pipe, Tube & Hose Fittings
Hydraulic Fittings
Hydraulic Unions
Hydraulic Unions
Hydraulic Unions are the couplings which can be disconnected without cutting. Their connection (typically threading) allows for easy release.
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