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Flat gate valve works and product structure characteristics
Flat gate valve works and product structure features Flat gate valve works: Double seal, automatic pressure relief, maintenance-free 1, the valve internal pressure when (1), the gate is closed, the surface of the seat ring PTFE seals form the initial seal , Each time the valve is opened or closed, the seat ring can clean both sides of the shutter (as shown in Figure 1). 2. When applying pressure to the valve (2), the pressure acts on the shutter and forces it close to the PTFE ring on the outlet seat , Compress it until the gate stops on the steel seat, thus forming a double seal, first with the PTFE-to-metal seal and then with the metal-to-metal seal, and with the seat being securely picked up into the groove (3), the O-ring blocks any rear media flow. (Figure 2) 3, the body pressure relief, the formation of the import seal, the pipeline pressure acting on the inlet valve seat (4), to move to the gate, then form a PTFE seal on the metal at the same time, O-ring (5) form a tight seal with the seating groove. (Figure 3) 4, the valve automatically discharge excess pressure, when the body pressure is greater than the pipeline pressure, due to thermal expansion, import seat into the groove, valve body excess pressure between the valve seat and the gate release Into the pipeline. (Figure 4) Product features of flat gate valve Product design features â— The valve body has two structures, casting and welding. â— The valve seat adopts O-ring to seal and pre-tighten the floating valve seat structure to seal the valve inlet and outlet in both directions; and the opening and closing torque of the structure is only 1/2 of the normal valve , Can easily open, close the valve. The seal ring uses the floating seat ring structure with o-sear ring sealed and pre-tightening force applied to have an inlet and outlet dual-way sealed; and the open-close moment with this structure is 1/2 that of the common valves only The seat ring uses the sealing face of the PTFE, with PTFE on the metal and metal-to-metal double seal, PTFE sealing surface at the same time to remove the role of the gate dirt, The seat ring uses the sealing face inlaid with PTFE, so has dual seals of PTFE to metal and metal to metal, the PTFE sealing surface also acts as removing dirt on the wedge disc. â— Metal-to-metal sealing valve, grease- Grease, valve seat into the valve sealing surface, so that the valve reaches zero leakage.用于 阀门 用 çš„ 金属 到 金属 密å°, 有 是 油泵 外 çš„ çš„ æ„大利. The grease enters the sealing face through the injector and the seat ring to have the valve up to null leak. Whether it is fully open or fully closed with the sealing surface is always consistent, the sealing surface is protected from direct erosion of the media, thereby extending the service life. The wedge disc of the valve with flow guide hole is always fitted with the sealing face whether in full open or full close status to have the sealing face protected without being directly eroded by the medium so as to extend the duration. When the channel is smooth for the straight line, the flow resistance coefficient is extremely small, no pressure loss, can pass the hair ball to clean the pipeline. When fully opened, the valves channel is smooth and linear, with an extremely small flow resisting coefficient and no pressure loss, and the pipeline can be cleaned with hair-ball through it. Often adjust, open, close extremely lightweight, and reliable sealing, stuffing box is equipped with an auxiliary seal grease injection structure, the sealing performance is absolutely reliable, truly zero leakage; Solve the common valve packing at the most easily leak disease. This valve uses the packing structure with the ability of self-seal, needs no constant adjustment, features very light open and close and a reliable seal An assisting sealing grease injection structure is set in the packing to have the sealing performance absolutely reliable and get a â— When the valve is closed, it can automatically remove the high pressure in the cavity (see working principle diagram) to ensure the safe use. Automatic removal of the high pressure in the internal cavity when the valve is about to close (see the working principle diagram) for the details) so as to ensure safety. â— fully enclosed structure, good protective performance, can adapt to all-weather requirements. â— lifting rod valve with indicator rod or observation window to indicate the opening and closing of the valve case, the rotary rod valve with a closed gear rotation opening and closing instructions agencies. An indication rod or viewing window is set Ascend and descend stem with the valve to whow the open-close condition, Revolve stem with the valve Use a sealed gear-driving open-close indicating mechansim. Asphalt anti-corrosion treatment, with the pipeline life. The external surface of the directly built-in valve is corrosion resisting treated with epoxy coal bitumen and can be the same duration as the pipeline. Product Features Features â— The valve body has two structures of casting and welding. â— The valve seat adopts O-ring to seal and pre-tighten the floating valve seat structure to seal the valve inlet and outlet in both directions; and the opening and closing torque of the structure is only 1/2 of the normal valve , Can easily open, close the valve. The seal ring uses the floating seat ring structure with o-sear ring sealed and pre-tightening force applied to have an inlet and outlet dual-way sealed; and the open-close moment with this structure is 1/2 that of the common valves only The seat ring uses the sealing face of the PTFE, with PTFE on the metal and metal-to-metal double seal, PTFE sealing surface at the same time to remove the role of the gate dirt, The seat ring uses the sealing face inlaid with PTFE, so has dual seals of PTFE to metal and metal to metal, the PTFE sealing surface also acts as removing dirt on the wedge disc. â— Metal-to-metal sealing valve, grease- Grease, valve seat into the valve sealing surface, so that the valve reaches zero leakage.用于 阀门 用 çš„ 金属 到 金属 密å°, 有 是 油泵 外 çš„ çš„ æ„大利. The grease enters the sealing face through the injector and the seat ring to have the valve up to null leak. Whether it is fully open or fully closed with the sealing surface is always consistent, the sealing surface is protected from direct erosion of the media, thereby extending the service life. The wedge disc of the valve with flow guide hole is always fitted with the sealing face whether in full open or full close status to have the sealing face protected without being directly eroded by the medium so as to extend the duration. When the channel is smooth for the straight line, the flow resistance coefficient is extremely small, no pressure loss, can pass the hair ball to clean the pipeline. When fully opened, the valves channel is smooth and linear, with an extremely small flow resisting coefficient and no pressure loss, and the pipeline can be cleaned with hair-ball through it. Often adjust, open, close extremely lightweight, and reliable sealing, stuffing box is equipped with an auxiliary seal grease injection structure, the sealing performance is absolutely reliable, truly zero leakage; Solve the common valve packing at the most easily leak disease. This valve uses the packing structure with the ability of self-seal, needs no constant adjustment, features very light open and close and a reliable seal An assisting sealing grease injection structure is set in the packing to have the sealing performance absolutely reliable and get a â— When the valve is closed, it can automatically remove the high pressure in the cavity (see working principle diagram) to ensure the safe use. Automatic removal of the high pressure in the internal cavity when the valve is about to close (see the working principle diagram) for the details) so as to ensure safety. â— fully enclosed structure, good protective performance, can adapt to all-weather requirements. â— lifting rod valve with indicator rod or observation window to indicate the opening and closing of the valve case, the rotary rod valve with a closed gear rotation opening and closing instructions agencies. An indication rod or viewing window is set Ascend and descend stem with the valve to whow the open-close condition, Revolve stem with the valve Use a sealed gear-driving open-close indicating mechansim. Asphalt anti-corrosion treatment, with the pipeline life. The external surface of the directly built-in valve is corrosion resisting treated with epoxy coal bitumen and can be the same duration as the pipeline.