Medium-Duty Gate Valve

A Medium-Duty Gate Valve is a versatile and durable linear-motion valve designed for reliable isolation service in a wide range of fluid handling systems. Its primary function is to provide a full, unobstructed, straight-line flow path when fully open, and a complete shutoff when fully closed. This is achieved through the raising or lowering of a solid gate, or wedge, perpendicular to the flow, which creates a tight seal against the valve seats. Engineered for robust performance without the extreme pressure and temperature demands of heavy-duty applications, it is ideally suited for on/off control of water, oil, gas, and steam in municipal, commercial, and industrial settings, offering low flow resistance and long service life when operated correctly.

Product Feature and Application

A medium-duty gate valve is designed for reliable on/off control in moderate-pressure piping systems. It features a robust body, rising or non-rising stem options, and a tight-sealing gate for minimal pressure drop when fully open. Suitable for water, oil, gas, and low-pressure steam applications, it is widely used in industrial, commercial, and municipal systems for isolation, distribution, and process control where frequent operation is not required.

Product Parameter

Technical Specification

Nominal Pressure: 1.6 MPa

Working Medium: Water

Operating Temperature: -10 °C ≤ T ≤ 100 °C

Thread conforms to ISO 228 standard

Product Dimension

Installation Guidelines

1.Clean and prepare the piping system thoroughly before installing the valve.

2.Before installation, remove any protective end caps and inspect the valve ports and seating surfaces to ensure they are clean.

3.Provide adequate support for the valve to avoid stress from connecting piping.

4.Confirm that the valve’s pressure and temperature ratings are suitable for the intended service conditions.

5.Before placing the Medium-Duty Gate Valve into service, cycle it fully from open to closed to verify smooth operation.

6.After installation, check that the packing nut is properly tightened.

7.For gate and globe valves, it is recommended to install with the stem vertical and the operating handle on top.

Operating Instructions

Medium-Duty Gate Valves are manually operated. Turn the handle counterclockwise to open and clockwise to close.

Inspection and Maintenance

1.Routine inspection and preventive maintenance are generally not required, aside from occasional adjustment of stem packing and periodic cycling of the valve from open to closed.

2.If a packing leak occurs, tighten the packing nut clockwise by about a quarter-turn—or until leakage stops—to increase sealing pressure on the stem packing. Never repack a valve while it is under system pressure.

3.When replacing the valve stem, also replace the packing material.

Replacement Parts

Under normal operating conditions, replacement parts are seldom needed. Recommended spare parts for each valve type include: Handle, handle nut, packing, gland, packing nut.

When ordering parts, please provide the valve’s figure number, size, required part, and approximate age.