Mueller Industries 101-004NL Brass Swing Check Valve 3/4 in

Product Description

The MUELLER INDUSTRIES 101-004NL is a lead-free brass swing check valve designed to prevent backflow in pressurized water systems. The valve body is constructed from solid brass and uses a swinging gate mechanism that opens under forward flow and closes automatically when flow reverses. A directional arrow is molded into the valve body to confirm correct installation orientation. At 3/4 inch FIP on both the inlet and outlet, this valve fits standard threaded pipe connections used by licensed plumbers in residential and light commercial water supply systems.

This valve is suited for both residential and commercial plumbing applications where backflow prevention is required on water supply lines. The 3/4 inch FIP x 3/4 inch FIP configuration fits standard threaded pipe runs and is commonly installed on potable water systems. Its lead-free construction meets requirements for use on drinking water lines in jurisdictions that enforce lead-free plumbing standards.

Key Features

• Lead-free brass body construction meets lead-free requirements for potable water installations
• Swing gate mechanism opens under forward flow and closes automatically on flow reversal
• 3/4 inch FIP x 3/4 inch FIP connections for standard threaded pipe fitment
• Directional arrow molded onto valve body for correct installation orientation
• Suitable for both residential and commercial plumbing applications

Compatibility

Designed as an OEM-style replacement or new-installation swing check valve for 3/4 inch female iron pipe threaded water supply lines in residential and commercial plumbing systems.

Installation Notes

Installation should be performed by a licensed plumber in accordance with local plumbing codes and the International Plumbing Code (IPC). Shut off the water supply and relieve system pressure before installing or replacing this valve. Apply thread sealant or PTFE tape to male threaded fittings before making connections. Observe the directional arrow molded on the valve body to ensure flow direction is correct — installing the valve backwards will prevent proper operation.

Technical Specifications

• Connection Size: 3/4 inch
• Connection Type: FIP x FIP (Female Iron Pipe both ends)
• Valve Type: Swing Check
• Body Material: Brass
• Lead-Free: Yes
• UPC: 032888110458

Standard Information

• Brand: MUELLER INDUSTRIES
• Manufacturer Part Number: 101-004NL