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The flat gate valve is a sliding valve whose closing member is a parallel gate, and its closing member can be a single gate or a double gate with a spreading mechanism in between.
The pressing force of the gate to the valve seat is controlled by the medium pressure acting on the floating gate or the floating valve seat. If it is a flat gate valve with a double gate, the opening mechanism between the two gates can supplement this pressing force.
The flat gate valve can be divided into manual flat gate valve, pneumatic flat gate valve, and electric flat gate valve according to the driving mode. According to the use and occasion, it can be divided into diversion hold flat gate valve, non-diversion hole flat gate valve, oil field flat gate valve, pipeline flat gate valve, gas flat gate valve, etc.
- Bonnet pressure self-sealed design
- Fireproof design
- Extended stem optional
- Single or double flat gate optional
- Reliable internal and external sealing
- Pressure self-relief design of valve pocket
- Elastic gate design
A flat gate valve operates by using a flat gate or disc to control the flow of fluids within a pipeline. Here's a step-by-step explanation of how it works:
Valve Closed Position: In the closed position, the flat gate rests perpendicular to the flow of the fluid, effectively blocking the passage of the fluid through the valve. The gate is held in place by the valve body and is in contact with the valve seats on either side to provide a tight seal.
Valve Opening: To open the valve, an operator or automated system applies force to the gate, moving it along its path of travel away from the valve seats. As the gate moves, the fluid is allowed to flow through the valve, following the open pathway created by the gate.
Fluid Flow: With the gate in the open position, fluid flows freely through the valve with minimal obstruction. The full bore design of many flat gate valves ensures that the internal diameter of the valve matches that of the pipeline, minimizing pressure drop and maximizing flow capacity.
Valve Closing: To close the valve, the gate is moved back into its perpendicular position, effectively blocking the flow of fluid through the valve. The gate returns to its closed position by the force of gravity or through the use of external mechanisms such as actuators or hand-operated mechanisms.
- Pressure Rating: CLASS 150~ CLASS 2500 (PN10~PN420)
- Bore Size: 2"~48" (DN50~DN1200)
- Working Temperature: -196ºC~600ºC
- Body Material: Carbon Steel, Stainless Steel, Duplex, Hastelloy, Inconel, Monel, Alloy20, Incoloy, other materials optional
- Gate Material: Carbon Steel, Stainless Steel, Duplex, Hastelloy, Inconel, Monel, Alloy20, Incoloy, other materials optional
- Seat Material: PTFE, RPTFE, PEEK, Stainless Steel, Stellite, other material optional
- Operating Mode: Manual, Pneumatic Actuator, Electric Actuator, Hydraulic Actuator
| Manufacture Standard Of Gate Valve | API 600 ASME B16.34 / KS B2361 / GB/T 12234 / DIN 3352 |
| Valve Connection | Flanged |
| Connection Type | ANSI, JIS, DIN, GB |
| Valve Material | CF8, CF8M, WCB |
| Power Supply | General: 3-phase 380VAC Special: 3-phase AC660V, AC440V, AC415V Special: 1-phase AC220V, AC110V Special: DC12V, DC24V, DC48V |
| Torque Range | 50Nm to 10,000Nm |
| Protection Class | IP65 |
| Insulation Class | F Class |
| Ambient Temperature | -4°F to 140°F |
