3/4 inch Stainless Steel Union Female x Female

3/4 Inch Stainless Steel Union – FIP x FIP Threaded Connection

The 3/4 inch stainless steel union provides a removable connection between two female NPT-threaded pipe ends. Constructed from corrosion-resistant stainless steel, this fitting is commonly used in pressurized fluid systems where disassembly is required for service, maintenance, or equipment replacement without disturbing adjacent piping.

Product Characteristics and Performance

Stainless steel unions are engineered for high-strength connections in systems subject to pressure, temperature fluctuations, or corrosive conditions. The union body and ends are precision-machined to meet ANSI/ASME dimensional and threading standards. Key attributes include:

• ✅ Threaded Female Connections Compatible with standard NPT pipe threads per ASME B1.20.1.
• ✅ Three-Piece Design Includes two threaded ends and a central nut that provides a mechanical seal when tightened.
• ✅ Corrosion-Resistant Alloy Typically manufactured from 304 or 316 stainless steel for resistance to oxidation, scaling, and chemical exposure.
• ✅ Reusable Joint Allows for repeated assembly and disassembly without damaging sealing surfaces.

Installation Considerations

Apply PTFE tape or pipe thread sealant to male threads during assembly. Ensure that union ends are properly aligned before tightening the nut to achieve a pressure-tight connection. Do not overtighten, as this can distort sealing surfaces or threads. Suitable for installations requiring frequent access or where system flexibility is necessary.

Typical Applications

Used in fluid transfer systems, mechanical rooms, pump manifolds, and hydronic heating or cooling lines. This union is appropriate for water, air, glycol mixtures, and other compatible media where stainless steel is required for environmental or chemical resistance.

Code and Specification Compliance

Stainless steel fittings used in potable water systems must comply with NSF/ANSI 61 and 372. This union is suitable for non-potable and potable service when approved for use by local code and when installed in accordance with governing standards.

Technical Specifications

• Material: 304 or 316 Stainless Steel
• Size: 3/4 inch nominal
• Connection Type: Female NPT x Female NPT
• Design: Three-piece union with central nut and machined seal faces
• Compliance: ASME B1.20.1, NSF/ANSI 61 & 372 (lead-free alloy, if required)

The 3/4 inch Stainless Steel Union FIP x FIP is a durable, code-compliant fitting for piping systems requiring mechanical separation points. Specify for applications where corrosion resistance, serviceability, and long-term performance are required.