Products knowledge
Gate valve of the working principle and characteristics of the product mix---2009-10-20
Flat gate valve of the working principle and characteristics of the product mix
flat gate valve works: a double seal, automatic pressure relief, maintenance-free one, a considerable internal pressure when the valve (1), gate in the closed state, the valve seat surface of PTFE seal ring to form an initial seal, each valve The door opened or closed, the valve seat ring can clean damper on both sides (Figure 1)
2, to exert management pressure on the valve (2), the pressure acting on the gate, forcing it to close to the exit on the PTFE seat ring, compress it until it stopped at the steel gate valve seat, so that to form a double seal, first PTFE to metal seal, and then the metal on metal seal firmly seat was picked up groove, at this point (3), O-ring to prevent any back flow of media. (Figure 2)
3, the pressure discharge valve after the import of seal formation, pipeline pressure on the import of the valve seat (4), to move gate, when the formation of PTFE to metal seal at the same time, O-ring (5) with the valve seat to form a close seal groove. (Figure 3)
4, the valve automatically discharge the excess pressure, when the valve is greater than the pressure pipe pressure, due to thermal expansion of imports into the groove valve seat, valve body excess pressure between the valve seat and gate leakage into the pipeline. (Figure 4)
£ £
Flat gate valve structural characteristics of the product
¡ñ valve body casting and welding are two kinds of structures.
¡ñ Seat with O-ring seal and the preload imposed by a floating seat structure that allows the import and export of two-way valve seals; and that the structure of ordinary valves open and close torque is only 1 / 2, can reach easily opened, off valve.
¡ñ valve seat sealing surface inlaid with PTFE, a PTFE on metal and metal to metal double seal, PTFE sealing surface at the same time remove dirt gate the role of
¡ñ Metal to metal sealed valves, oil injection valve equipped with an external structure, and grease through the grease injection device, the valve seat into the valve sealing surface, so that the valve to achieve zero leakage.
¡ñ hole with a diversion valve gate, either full-or full-off has always coincide with the sealing surface, sealing surface to be protected from direct scouring media, thus prolonging the service life.
¡ñ valve in the fully open, the channel smooth as a straight line, flow resistance coefficient is extremely small, no pressure loss, leading to hair balls cleaning pipelines.
¡ñ The valve used with self-sealing capability of the packing structure, without frequent adjustment, opening and closing is extremely lightweight, and reliable seal, stuffing seal oil into the Department has a secondary structure, and absolutely reliable sealing performance, thereby achieving zero leakage; resolved Universal Valve packing leakage of the concealment of the most vulnerable patients.
¡ñ valve closes automatically relieved cavity pressure (see principle diagram), to ensure safe usage.
¡ñ completely closed structure, protection, good performance, can be adapted to all-weather requirements.
¡ñ Lifting rod valve rod or observation window with instructions to indicate the valve open and close case, rotating rod valve gear with enclosed rotating body open and close directions.
¡ñ Direct the outer surface of Li-type valves used epoxy coal pitch antiseptic treatment, the same life with the pipeline
flat gate valve works: a double seal, automatic pressure relief, maintenance-free one, a considerable internal pressure when the valve (1), gate in the closed state, the valve seat surface of PTFE seal ring to form an initial seal, each valve The door opened or closed, the valve seat ring can clean damper on both sides (Figure 1)
2, to exert management pressure on the valve (2), the pressure acting on the gate, forcing it to close to the exit on the PTFE seat ring, compress it until it stopped at the steel gate valve seat, so that to form a double seal, first PTFE to metal seal, and then the metal on metal seal firmly seat was picked up groove, at this point (3), O-ring to prevent any back flow of media. (Figure 2)
3, the pressure discharge valve after the import of seal formation, pipeline pressure on the import of the valve seat (4), to move gate, when the formation of PTFE to metal seal at the same time, O-ring (5) with the valve seat to form a close seal groove. (Figure 3)
4, the valve automatically discharge the excess pressure, when the valve is greater than the pressure pipe pressure, due to thermal expansion of imports into the groove valve seat, valve body excess pressure between the valve seat and gate leakage into the pipeline. (Figure 4)
£ £
Flat gate valve structural characteristics of the product
¡ñ valve body casting and welding are two kinds of structures.
¡ñ Seat with O-ring seal and the preload imposed by a floating seat structure that allows the import and export of two-way valve seals; and that the structure of ordinary valves open and close torque is only 1 / 2, can reach easily opened, off valve.
¡ñ valve seat sealing surface inlaid with PTFE, a PTFE on metal and metal to metal double seal, PTFE sealing surface at the same time remove dirt gate the role of
¡ñ Metal to metal sealed valves, oil injection valve equipped with an external structure, and grease through the grease injection device, the valve seat into the valve sealing surface, so that the valve to achieve zero leakage.
¡ñ hole with a diversion valve gate, either full-or full-off has always coincide with the sealing surface, sealing surface to be protected from direct scouring media, thus prolonging the service life.
¡ñ valve in the fully open, the channel smooth as a straight line, flow resistance coefficient is extremely small, no pressure loss, leading to hair balls cleaning pipelines.
¡ñ The valve used with self-sealing capability of the packing structure, without frequent adjustment, opening and closing is extremely lightweight, and reliable seal, stuffing seal oil into the Department has a secondary structure, and absolutely reliable sealing performance, thereby achieving zero leakage; resolved Universal Valve packing leakage of the concealment of the most vulnerable patients.
¡ñ valve closes automatically relieved cavity pressure (see principle diagram), to ensure safe usage.
¡ñ completely closed structure, protection, good performance, can be adapted to all-weather requirements.
¡ñ Lifting rod valve rod or observation window with instructions to indicate the valve open and close case, rotating rod valve gear with enclosed rotating body open and close directions.
¡ñ Direct the outer surface of Li-type valves used epoxy coal pitch antiseptic treatment, the same life with the pipeline
