

Manufacturer pricing rules prevent us from advertising our discount — no account or email required to see it.
Secure Payments
Easy Returns
Expert Advice
Fast Shipping
The B K/MUELLER INDS(IMPORT) 511-703HN is a 0.5 inch galvanized union constructed with brass and iron materials. Unions allow piping systems to be disconnected and reconnected without cutting or threading new pipe ends, making them a standard fitting in maintenance-heavy installations. This galvanized finish provides corrosion resistance suited to exposed or damp environments. Licensed plumbers and pipefitters install this fitting in water supply, gas distribution, and general mechanical piping systems where future serviceability is a priority.
This union is appropriate for residential and light commercial plumbing and mechanical systems using 0.5 inch threaded pipe. The galvanized coating makes it a common choice in applications where bare iron would be subject to moisture exposure. It arrives in a package quantity of 10 units, making it practical for contractors stocking fittings for multiple service calls or new construction rough-in work.
Designed as an OEM-style replacement fitting for 0.5 inch threaded galvanized piping systems in residential and commercial plumbing and mechanical applications.
Installation is performed by a licensed plumber or pipefitter in accordance with the International Plumbing Code (IPC) or applicable local codes. Shut off the water supply and relieve system pressure before beginning any work on pressurized piping. Apply thread sealant or PTFE tape to all male threads before assembly. Do not overtighten, as excessive torque can crack the union nut or damage seating surfaces.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
Add install kit to cart
—
Thanks for subscribing!
This email has been registered!