The slab gate valve is a sliding valve with a parallel gate closing element. The closing element can be a single gate or a double gate with an interlocking mechanism. The pressure of the gate against the seat is controlled by the pressure of the medium acting on the floating gate or the floating seat. In the case of a double gate Slab gate valve, this force is supplemented by a spreader mechanism between the two gates.

Slab gate valve can be divided into manual Slab gate valve, pneumatic Slab gate valve and electric Slab gate valve according to the driving method, Slab gate valve can be divided into Slab gate valve with guide hole, Slab gate valve without guide hole, oilfield Slab gate valve, pipeline Slab gate valve, pipeline Slab gate valve and Slab gate valve. Slab gate valve, pipeline Slab gate valve and gas Slab gate valve, etc.

This series of products adopts a new floating seal structure and is suitable for oil and natural gas pipelines with a pressure not greater than 15.0MPa and a temperature of -29 to 121℃, as an opening and closing device for controlling the medium.

Structural features and working principle

1. using floating valve seat, two-way opening and closing, reliable sealing, flexible opening and closing.

2. the gate has guide bar to give precision guidance, while the sealing surface are sprayed and welded hard alloy, resistant to erosion.

3. The valve body has high load-bearing capacity, the channel is straight through, when fully open, and the gate guide hole through and straight pipe similar, flow resistance is very small. The valve stem adopts composite packing, multiple sealing, making the seal reliable and small friction.

4. When closing the valve, turn the hand wheel clockwise, the gate plate moves down to the bottom, due to the action of medium pressure, the sealing seat at the inlet end is pushed to the direction of the gate plate, forming a larger sealing specific pressure, thus forming the first seal. At the same time, the gate plate is pressed onto the sealing seat at the outlet end, becoming a double seal.

5. Because of the double seal, the wearing parts can be replaced without affecting the work of the pipe. This is an important feature of our product which has priority over similar products at home and abroad.

6. When opening the gate plate, turn the hand wheel counterclockwise, the gate plate moves up and the inflow hole penetrates with the passage hole. As the gate plate rises, the through hole gradually increases to the limit position, the inflow hole coincides with the channel hole, and is fully opened at this time.

The API 6D Slab gate valve produced by Shanghai Huhang Valve is worth choosing. Main features: Slab gate valve is an efficient and reliable through-conduit gate valve, with two floating seats to provide a tight seal with the gate. Full bore through conduit design can eliminate flow turbulence. Pressure drop is no larger than through an equal length of pipe.