Mueller MA236206E381UOL 6 in Flanged Gate Valve

Product Description

The MUELLER MA236206E381UOL is a 6-inch flanged ductile iron resilient wedge gate valve designed for potable water distribution and fire protection systems. It features an open-left operating direction and a full-port, non-rising stem configuration. The iron wedge is symmetrical and fully encapsulated in molded rubber, eliminating exposed iron and preserving sealing integrity over years of service. A triple O-ring stem seal and fusion bonded epoxy interior coating provide corrosion resistance and long-term reliability. Rated to 350 psig at a 125-pound pressure class, this valve is built for demanding waterworks environments and meets stringent municipal and industrial standards.

This valve is suited for use in potable water mains and fire protection applications in both municipal and commercial installations. The flanged end connections on both sides conform to ANSI and ASME B16.1 and B16.42 standards, making it compatible with standard ductile iron flanged piping systems. It is FM Approved and UL Listed under UL 262, making it appropriate for fire service applications where listed components are required. Water utilities, mechanical contractors, and fire protection installers working on buried or above-grade waterworks piping are the primary installers of this product.

Key Features

• Fully encapsulated ductile iron wedge with molded rubber — no exposed iron surfaces
• Triple O-ring stem seal for reliable, long-term shutoff performance
• Fusion bonded epoxy interior coating for corrosion protection in potable water service
• Non-rising stem design suits installations with limited overhead clearance
• FM Approved and UL 262 Listed for fire service use
• NSF 61 and NSF 372 certified for contact with potable water

Compatibility

Designed for use with ductile iron flanged piping systems in potable water and fire protection service, conforming to AWWA C-509 and AWWA C-550 standards for resilient wedge gate valves.

Installation Notes

Installation should be performed by a licensed plumber, pipefitter, or waterworks contractor in accordance with applicable local codes and AWWA guidelines. Depressurize and isolate the line before installing or servicing this valve. Flange bolts should be tightened in a cross pattern to ensure even gasket compression; consult applicable ANSI flange bolt torque tables for the appropriate fastener size. The valve weighs 154 pounds — use appropriate lifting equipment and follow safe rigging practices during handling and placement.