3/4 inch Brass Union Female x Female

3/4 Inch Brass Union – Female x Female, Threaded, Lead-Free

The 3/4 inch Brass Union Female x Female is a mechanical pipe fitting used to join two sections of threaded pipe, allowing for easy disassembly and maintenance. This union is commonly specified in potable water, hydronic heating, and non-potable system installations requiring a serviceable connection point.

Performance Characteristics

Constructed from lead-free brass, this union meets national plumbing code requirements for use in drinking water systems. It features precision-machined female NPT threads and a central nut that facilitates joint assembly and disassembly without rotating the connected piping.

• ✅ NSF/ANSI 372 Certified Lead-Free Brass Complies with federal lead content regulations for potable water applications.
• ✅ FNPT x FNPT Threads 3/4 inch tapered threads conform to ANSI B1.20.1 for compatibility with standard pipe and fittings.
• ✅ Reusable Design Central nut allows separation of piping without cutting, ideal for system maintenance or component replacement.

Installation Guidance

Install by applying thread sealant or PTFE tape to both male pipe threads prior to tightening. Use two pipe wrenches to secure the union halves and prevent distortion. Verify proper alignment and sealing before pressurizing the system. Recommended for use in systems up to 200 PSI (verify specific product rating as applicable).

• ✅ Tools Required: Pipe wrench or adjustable wrench
• ✅ Sealant: Thread compound or tape approved for the medium
• ✅ Service: Water, air, glycol, or other compatible media

Material and Dimensional Details

• Material: Lead-Free Brass (DZR or equivalent)
• Connection Type: FNPT x FNPT
• Nominal Size: 3/4 inch
• Compliance: NSF/ANSI 61 & 372, ASME B16.18, ANSI B1.20.1

Typical Use Cases

Used in domestic water supply lines, water heater connections, filtration systems, and hydronic loops where equipment or valves may require periodic servicing. Also suitable for retrofit projects where threaded copper, brass, or steel piping is utilized.

Regulatory Consideration

Lead-free brass fittings are required for all potable water applications in the U.S. under the Safe Drinking Water Act. This union complies with these mandates and is certified for use in systems requiring NSF 61 and 372 approval.

The 3/4 inch Brass Union Female x Female offers a dependable, serviceable connection for threaded piping systems in residential and commercial applications. It supports ease of maintenance and meets all modern code requirements for lead-free potable water installations.