Watts LFM115-74/LFM6115-74: Installation, Operation, and Maintenance

Introduction to Pressure Reducing Control Valves

This document provides essential information for the proper installation, operation, and maintenance of the Watts LFM115-74 and LFM6115-74 Pressure Reducing Control Valves, featuring a Low Flow By-Pass. These valves are designed to automatically reduce fluctuating upstream water pressure to a constant, lower downstream pressure, ensuring system stability and protection.

Key Features and Components

The manual details the standard components of the valve, including the main valve, pressure reducing control, fixed orifice, and the low flow by-pass. It also outlines available options and accessories that enhance functionality and monitoring capabilities.

Installation and Operation Guidance

Step-by-step instructions are provided for the correct installation of the valve, emphasizing the importance of flushing lines, proper orientation, and the use of isolation valves. The operation section explains how the main valve and the low flow by-pass work in conjunction to maintain desired downstream pressure under varying flow conditions.

Maintenance and Troubleshooting

A comprehensive maintenance schedule is outlined, covering monthly, quarterly, and annual checks to ensure peak performance and longevity. The document also includes a detailed troubleshooting guide to help identify and resolve common issues that may arise during operation, such as the valve not opening or closing properly.

For detailed procedures on valve disassembly, seat removal, and repair kit information, refer to the specific sections within this manual.

For further assistance or specific application requirements, consult Watts customer service.

Models: LFM115-74, LFM6115-74, LFM115-74, LFM115-74 Pressure Reducing Control Valve, LFM115-74, Pressure Reducing Control Valve, Reducing Control Valve, Control Valve

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