B K Mueller 564-001HN 3/4 Inch Close Galvanized Nipple

Product Description

The B K Mueller Industries 564-001HN is a 3/4-inch close galvanized steel nipple used in threaded pipe assemblies across plumbing, HVAC, and industrial piping systems. A close nipple has threads running the full length of the fitting with no unthreaded center section, allowing two fittings or valves to be joined with minimal gap between them. The galvanized coating provides corrosion resistance suited to water distribution, gas-adjacent piping, and mechanical room applications. This fitting ships in a package quantity of 15 and is handled and installed by licensed plumbers and pipefitters.

Close nipples in this size are commonly used in residential and light commercial plumbing systems where space between threaded connections is limited. Typical install scenarios include manifold assemblies, riser connections, valve clusters, boiler trim piping, and anywhere a flush or near-flush threaded joint is required. The 3/4-inch nominal size is a standard trade size found throughout residential supply lines and mechanical systems.

Key Features

• Close configuration — fully threaded end to end with no bare center, minimizing joint gap
• 3/4-inch nominal pipe size — standard trade size for water supply and mechanical piping
• Galvanized steel construction provides corrosion resistance for water and general-service applications
• Package quantity of 15 reduces restocking frequency on multi-connection jobs
• NPT-compatible threads for standard threaded fitting and valve connections

Compatibility

Designed as a standard OEM-style replacement and general-use threaded fitting for 3/4-inch NPT threaded plumbing and mechanical piping systems.

Installation Notes

Installation is performed by a licensed plumber or pipefitter following applicable IPC or local plumbing code requirements. Shut off and depressurize the affected water or gas line before removing or installing any threaded fitting. Apply appropriate thread sealant or PTFE tape to the male threads before engagement. Use a pipe wrench sized for 3/4-inch fittings and avoid over-tightening, which can crack fittings or distort threads on close nipples due to their short body length.