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The B K/MUELLER INDS(IMPORT) 511-804HN is a 3/4-inch galvanized pipe plug manufactured using a plain forged construction. It is designed to seal open pipe ends in plumbing, gas, and mechanical piping systems where a threaded male plug is required. The galvanized finish provides corrosion resistance suited to both indoor and outdoor installations. Plumbers and pipefitters install this fitting as part of new construction or service work when capping off unused branch connections or test ports. The forged construction delivers consistent thread quality and reliable sealing under standard pipe pressures.
This plug is appropriate for residential and light commercial plumbing and gas piping applications where galvanized steel fittings are specified. It is commonly used to close unused tee outlets, cap off supply lines during rough-in, or isolate sections of a system during pressure testing. The 3/4-inch size fits standard NPT-threaded pipe connections of the same nominal diameter. It ships in a package quantity of 20 units, making it practical for stocking on service vehicles or in supply rooms.
Designed as an OEM-style replacement and standard trade fitting for use with 3/4-inch NPT-threaded galvanized steel pipe and fittings in residential and commercial plumbing and mechanical systems.
Installation is performed by licensed plumbers or pipefitters following applicable IPC and IFGC requirements for the system type. Shut off the water or gas supply and depressurize the line before installing or removing any threaded plug. Apply an approved thread sealant or PTFE tape to the male threads before engagement. Do not overtighten; use a pipe wrench sized appropriately for the fitting to avoid cracking the plug body or stripping threads.
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.
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