Slab gate valve

Slab gate valve is a kind of closure for the parallel slide valve of the gate. Close it a can be a single ram or a meantime double ram with open institution.Ram to the seat of the clamp force is by action with floating gate or floating seat of medium pressure to control. If it is double ram flat gate valve open between the two gate mechanism can complement the compaction force.
This series product adopts new floating type sealing structure, is applicable to pressure is not greater than 15.0 MPa, temperature - ARC valve on the oil and gas pipeline, as control medium and adjusting device for opening and closing, the product structure design, material selection, proper, strict testing, convenient operation, strong anti-corrosion, wear-resistant, resistant to erosion performance, is a kind of ideal new oil industry equipment.
Structure characteristics and working principle: adopt floating seat, two-way opening and closing, reliable seal, flexible for opening and closing. Disc has a given precision guidance, at the same time, sealing surface spraying weld hard alloy, resistance to erosion. Body high carrying capacity, channel for straight-through, when fully open, similar to phase through gate flow guide hole and the straight pipe, the flow resistance is small.
Stem with composite packing, multiple seal, reliable sealing, low friction. Close the gate valve, clockwise rotate the handwheel, ram down to the bottom, as a result of the action of medium pressure, the inlet side seal seat to ram the direction, form a larger sealing pressure ratio, thus forming the first seal. At the same time, the ram pressure to the outlet seal seat, become a double seal. Because adopt double seal, can work under the condition of pipeline in does not affect the change of wearing parts.
This is our factory product prior to the important characteristics of similar products at home and abroad. When open the gate valve, the handwheel counterclockwise, ram up, diversion holes with the channel pore penetration. As the rise of the gate, communicating pores increase, gradually to limit position, the guide hole and the channel pore collocated, fully open at this time.
Flat gate valve USES the packing structure with the sealing ability, without constant adjustment, features very light open and close, and the sealing is reliable, an auxiliary sealing grease injection structure is set in the packing, the sealing performance absolutely reliable and truly achieve zero leakage; Solved the packing place of universal valves to be easiest leak outward ills. Shut down automatically when removing the inner cavity and pressure, to ensure safe use.
Totally enclosed structure, good protective performance, can meet the all-weather requirement. The globe valve seat of the sealing structure should be elastic with pre-tightening force, either upstream or downstream seal seat sealing structure at the same time. Seating and sealing seal between content is always face to face. The seat has self-cleaning function, and in the process of the valve open or closed without being directly eroded by the airflow. Seat should consist of lubrication, no wear materials.
Valve actuator fault will not affect to other parts of the valve, work without dismantling the valve repair and replacement of 9. Configuration of yoke sleeve - aluminum-bronze yoke sleeve needle thrust bearing, the greatest degree to reduce operating torque. Stem - length of thread until the bracket.Pin and spot welding; Has the stability. Integral backseat - hardfaced, the longest service life.
Discs - spring loaded discs can adjust themselves, reduce actuator torque requirements. Integral stop - integrally cast carrier stop, carrier disc positioning assembly, stable and reliable seating. The body has two kinds of casting and welding structure. Metal to metal seal valve, the valve body is grease injector outside of it, grease gets into the sealing face through greasing, valve seat, valve to achieve zero leakage. Disc, seat after special craft processing, spray welding carbide, four fluorine wear-resisting, realize the double seal.
Double protection and grease auxiliary seal, seal more reliable, longer service life. The wedge disc of the valve with flow guide hole either fully open or close always and anastomosed with the sealing surface sealing face protected without being directly eroded by the medium, so as to prolong service life. Choke valve in the fully open, smooth channels for linear, small flow resistance coefficient and no pressure loss, can connect the bulb cleaning pipelines. Can automatically removing the internal cavity when the valve closed high pressure, to ensure safe use.
Fully closed structure, protective performance is good, can adapt to all requirements. An indication rod or viewing window to show the valve opening and closing.