Flat Gate Valve

JQF Valve is a high-end valve brand dedicated to manufacturing safe and high-quality flat gate valves for customers, while also providing comprehensive valve solutions for pipeline engineering. With over 20 years of experience in mechanical manufacturing, the factory focuses on quality and continuously provides customers with products and services that meet standards. Our durable Flat Gate Valve is a bidirectional sealing control valve used in oil, gas, and other pipelines.

1.Full-bore design for minimal flow resistance
2.Brush-assisted pipeline cleaning,
3.Floating seat for bidirectional sealing
4.Low opening and closing torque
5.Easy operation, and pressure relief and grease injection mechanisms to ensure high safety
6.Zero-leakage performance.

Product Usage

JQF Valve manufactures flat gate valves, a type of sliding valve. The closing element can be a single gate or a double gate with an expansion mechanism in between. The pressure of the gate against the valve seat is controlled by the pressure of the medium acting on the floating gate or floating valve seat. In the case of a double-gate valve, the expansion mechanism between the two gates supplements this pressure.

Product Categories

Structural Features

1. Floating Bidirectional Sealing
The customized flat gate valve seat enables bidirectional opening and closing, ensuring reliable sealing and flexible operation.
2. Hard Corrosion-Resistant Guiding Material
The gate is equipped with guide strips for precise positioning, and the sealing surface is sprayed with a tungsten carbide anti-erosion layer.
3. Zero Flow Resistance Design
High pressure resistance of the flat gate valve body; when fully open, the straight-through flow channel approximates a pipe of equal diameter (flow resistance ≤ 0.03).
Multi-stage sealing with composite packing on the valve stem reduces the friction coefficient by 40%.
4. Dual-Stage Sealing Mechanism
When closing clockwise:
The medium pressure pushes the inlet valve seat to form a primary seal.
The gate presses against the outlet valve seat to form a double seal.
5. Revolutionary Online Maintenance
The dual-seal structure allows for replacement of vulnerable parts without production interruption; this technology leads similar products both domestically and internationally.
6. Progressive Opening and Closing Control
When opening counterclockwise, the gate rises, and the guide hole gradually overlaps with the channel, achieving 100% full opening at the limit position.

Design Standards

Design and manufacture of standards: JB / T 5298
Structure length standard: JB / T 5298
Connection flange standard: GB / T 9113
Pressure temperature grade: GB / T 12224-2005
Test test standards: GB / T 13927-2008, JB / T 5298

Performance Parameters

The main shape and connection dimensions

Structure picture