Nibco 39923634641 Swing Check Valve 1/2 in Solder Ptfe

Product Description

The NIBCO 39923634641 is a 1/2-inch swing check valve designed for use in commercial, mechanical, and industrial piping systems. It controls flow direction automatically without manual operation, preventing backflow in copper-tubed installations. The valve features a PTFE disc seat seal and a screw-in bonnet that allows field access for repair or disc replacement without removing the valve body from the line. It is rated at 125 PSI steam working pressure (SWP) and 200 PSI cold working pressure (CWP), making it suitable for a range of moderate-pressure applications. Licensed plumbers and pipefitters are the typical installers of this valve type.

This valve is intended for horizontal installation or vertical installation with upward flow, connecting via female solder cup (CXC) end connections on 1/2-inch copper tubing. It fits commercial plumbing, HVAC hydronic systems, and mechanical piping where reliable backflow prevention is required. The PTFE disc and seat material provides resistance to a broad range of fluids; consult NIBCO chemical resistance guides for specific fluid compatibility before installation.

Key Features

• Swing check design allows horizontal or vertical (upward flow) installation
• Screw-in bonnet provides accessible repair and disc replacement in the field
• PTFE disc seat seal for durable sealing performance
• 200 PSI CWP and 125 PSI SWP pressure ratings
• Female solder cup (CXC) end connections for 1/2-inch copper tubing
• Non-manual, flow-actuated operation with no external operator required

Compatibility

Designed as an OEM-style replacement or new-installation swing check valve for 1/2-inch copper solder (CXC) piping in commercial, mechanical, and industrial plumbing and HVAC hydronic systems.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter in accordance with local plumbing codes and the applicable International Plumbing Code (IPC). Shut off and depressurize the system fully before soldering; remove the disc and seal components prior to applying heat to avoid damaging the PTFE seat. Observe the directional flow arrow cast on the valve body to ensure correct orientation. Consult NIBCO technical data sheets and chemical resistance guides before use with fluids other than water.