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What is a Flat Gate Valve?

The flat gate valve is a sliding valve whose gate is a parallel gate. The shutter can be a single shutter plate or a double shutter plate with a deployment mechanism in between.

The push force of the gate to the valve seat is controlled by the pressure of the medium acting on the floating gate or floating valve seat. If the flat gate valve is a dual shutter flat gate valve, the spreading mechanism seen in the two shutters can compensate for this pressure.

Specifications of Flat Gate Valve

• • Size: from 2″ to 48″

• • Pressure: 150 – 1500LB

• • Material: WCB, LCB, WC6, WC9, CF8, CF3, CF3M, and CF8M

• • Design and production standard: API 600, API6D, and ASME B16.34

• • Distance between flanges: API 6D, ASME B16.10

• • Connected in accordance with standard: ANSI B16.5, ASME B16.47, ANSI B16.25

• • Test standard: API598, API6D

• • Actuation: can operate with lever, gearbox, a pneumatic or electric actuator with handwheel for emergencies.

• • Medium: The valve is suitable for several media including water, steam, oil, gas, petrol products, nitric acid, acetic acid, etc.

• • Working temperature: from -46ºC or -50ºC (stainless steel constructions) and -29ºC (carbon steel constructions) up to 600℃

Features of Flat Gate Valve

1. 1. The valve seat adopts the floating valve seat structure with o-ring sealing and pre-tightening force, and the inlet and outlet of the flat gate valve are sealed in both directions; in addition, the switching torque of this structure is 1/2 of that of the ordinary valve, and the valve can be easily opened and closed.

1. 1. When the flat gate valve is fully opened, the channel is smooth, the flow resistance coefficient is extremely small, and there is no pressure loss, and the pipeline can be cleaned with a hairball

1. 1. The filling material structure with self-sealing ability is adopted, which does not need to be adjusted frequently, the switch is extremely light, and the sealing performance is reliable. The auxiliary sealing grease injection structure is set at the filling material, the sealing performance is absolutely reliable, and zero leakage is truly achieved; It solves the disadvantage that the general valve packing is most likely to leak.

1. 1. When the flat gate valve is closed, the high pressure in the inner cavity can be automatically eliminated, which is convenient to use.

1. 1. The fully enclosed structure has good protection performance and can meet all-weather requirements.

Selection Principles for Flat Gate Valves

1. 1. For the pipelines for oil and natural gas, flat gate valves with single or double gates are used. If you need to clean the pipeline, choose a single gate or double gate with a straight rod flat gate valve with diversion holes.

1. 1. For the transportation pipeline and storage equipment of refined oil, use a single gate or double gate flat gate valve without a diversion hole.

1. 1. For oil and natural gas wellhead devices, single gate or double gate flat gate valves with diversion holes in dark rod floating valve seats are selected, most of which are API16A standards, and the pressure levels are API2000, API3000, API5000, API10000, API15000, API20000.

1. 1. For pipelines with suspended particulate media, use knife-type flat gate valves.

1. 1. For city gas transmission pipelines, use a single gate or double gate soft-sealing exposed rod flat gate valve.

1. 1. For city running water project, choose single gate or double gates without diversion holes and open rod flat gate valve

Flat Gate Valve Supplier

ZECO Valve is a professional Flat Gate Valve manufacturer, if you are interested in our products, please feel free to contact us.