Midland Industries 62604 Ss Union 3/4 in Fnpt X Fnpt 150 Lb

Product Description

The MIDLAND INDUSTRIES 62604 is a 304 stainless steel union fitting rated for 150 lb service. It connects two 3/4-inch female NPT threaded pipe ends and allows the line to be broken and reassembled without disturbing the surrounding piping. The three-piece union design uses a ground joint seat to maintain a leak-free seal under repeated assembly cycles. At 150 psi working pressure, it suits a wide range of mechanical and process piping applications. Licensed plumbers, pipefitters, and HVAC technicians are the primary installers. Thread dimensions conform to ASME B1.20.1.

This union is rated for use with air, water, oil, natural gas, and steam, making it a versatile choice across residential, light commercial, and industrial service lines. Typical installation scenarios include gas distribution piping, hydronic heating loops, compressed air systems, and oil supply lines where routine service access to a section of pipe is required. The 304 stainless steel body resists corrosion in wet and mildly corrosive environments where carbon steel fittings are not appropriate.

Key Features

• 304 stainless steel construction for corrosion resistance in wet and mildly aggressive service conditions
• 150 lb pressure class rated to 150 psi working pressure
• 3/4 in female NPT on both ends for straightforward threaded assembly
• Thread dimensions conform to ASME B1.20.1 for reliable fit with standard NPT pipe and fittings
• Compatible with air, water, oil, natural gas, and steam service
• Three-piece union design allows line break and reassembly without cutting pipe

Compatibility

Suitable for use with air, water, oil, natural gas, and steam piping systems. Designed as a standard 150 lb class union replacement or new installation fitting for 3/4 in NPT threaded pipe in residential and light commercial service.

Installation Notes

Installation should be performed by a licensed plumber, pipefitter, or qualified HVAC technician in accordance with applicable local codes and standards including the IPC and IFGC where gas service is involved. Shut off and depressurize the line fully before disassembling or installing any union fitting. Apply an appropriate thread sealant or PTFE tape to male NPT threads per the service medium requirements. Do not overtighten the union nut, as 304 stainless steel threads can gall if excessive torque is applied.