Mansfield M400-1112 Toilet Fill Valve Cock Assembly

Product Description

The MANSFIELD M400-1112 is a replacement fill valve cock assembly designed for toilet tank service. This part controls water flow into the toilet tank during the refill cycle, shutting off automatically once the correct water level is reached. It serves as a direct replacement for the original 400-series cock assembly used in MANSFIELD toilet systems. Licensed plumbers and experienced service technicians typically handle this type of repair as part of a routine toilet rebuild or fill valve replacement job.

This assembly is suited for residential toilet tank applications where the original 400-series fill valve or cock assembly has worn, cracked, or begun leaking. It fits standard MANSFIELD toilet configurations that originally used the 400-series valve design. The M400-1112 restores proper tank fill function and water shutoff performance in aging or failed installations.

Key Features

• Direct replacement for the original 400-series cock assembly in MANSFIELD toilet tanks
• Controls tank refill water flow and automatic shutoff at proper water level
• Designed for standard residential toilet tank service
• OEM-style fitment supports straightforward swap-out during a toilet rebuild

Compatibility

Designed as a direct replacement for the 400-series cock assembly in MANSFIELD toilet tank systems. Compatible with MANSFIELD toilet configurations originally equipped with the 400-series fill valve assembly.

Installation Notes

Installation should be performed by a licensed plumber or qualified service technician in accordance with applicable local plumbing codes and IPC guidelines. Shut off the water supply at the fixture stop valve and flush the tank completely to drain residual water before beginning work. Inspect the tank inlet and related hardware for wear or mineral buildup prior to installing the new assembly. Do not overtighten connections on the tank inlet fitting, as this can crack porcelain or damage plastic valve components.

Technical Specifications

• Assembly Type: Fill Valve Cock Assembly
• Replaces: 400-series cock assembly

Standard Information

• Brand: MANSFIELD
• Manufacturer Part Number: M400-1112