GB Stainless Steel Pneumatic Gate Valve

This series of products use purified compressed air of 0.4 ~ 0.6 MPa (gauge pressure) as working pressure to push the piston and drive the gate to move perpendicular to the fluid, thus realizing the purpose of opening and closing the valve. Cleverly designed double-layer cylinder and buffer mechanism The working principle of double-deck cylinder and buffer mechanism is described as follows according to the four stages of ram work: (Attached schematic diagrams 1. Before the gate valve is opened: the piston of the upper cylinder (hereinafter referred to as the upper piston) and the piston of the lower cylinder (hereinafter referred to as the lower piston) are stressed at the same time. Driven by the upper and lower pistons, the valve stem overcomes the maximum static friction between the sealing surface of the gate and the sealing surface of the valve body with nearly twice the lifting force of the single piston, and drives the gate to rise. Compressed air flows from the lower air chamber of the upper cylinder to the lower air chamber of the lower cylinder through a communication pipe through a specific channel arranged on the partition plate, so as to push the upper and lower pistons to work at the same time. The gas in the upper air chamber of the lower cylinder passes through another specific channel arranged in the partition. It is discharged out of the cylinder body unimpeded. 2. Later stage of gate valve opening: After the gate valve is slightly opened, the lower piston moves to the top dead center, and the gate valve is driven by the upper piston to continue to lift until it reaches the full open position. 3. Pre-closing stage of gate valve: Driven by the upper piston, the gate leaves the fully open position and begins to descend.4. Later stage of shutter closing: When the upper piston hits the lower piston boss and drives the lower piston to continue descending together, the descending speed is obviously slowed down due to the obstruction of the air inlet passage of the upper air chamber of the lower cylinder and the exhaust passage of the lower air chamber of the lower cylinder, until the shutter descends to the fully closed position.size inch22.1/23468101214161824262830323642mm5065801001502002503003504004506006507007508009001050A5163.576102152200248299327375419559603648737781876978C Travel6278961271702202703303504204706006506857808059301020H Closed4654805906868151052108712481595172019752375246625803070315032753850H1-----1430147017902115238026603270336035704230432045905250LBW /RF29233035643255960078783888999110921397144815491651177820832438LRTJ29533335943556266479184189299410951407146015621664179420992454V300300400400600-------------V1-----600800600600600600800800800800800800800Weight RF kg4451811362945097601035144017872430462051207420791491501040024100Weight BW kg36437211525543863592013101510216039204295498067107834822020230Overseas Exhibition:/* March 10, 2023 17:59:20 */!function(){function s(e,r){var a,o={};try{e&&e.split(",").forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1