Q647H pneumatic valve fixed selling domestic and foreign markets I. Product Overview: Q647H pneumatic valve is fixed on a new generation of high-performance ball 海佩林 production, suitable for long distance pipelines and general industrial pipelines, their strength, safety, resistance to harsh environmental resistance etc. are designed for a special consideration for a variety of corrosive and non-corrosive media. Compared with the starting float valve, the job, the effect force the valve before the fluid pressure occurring in the sphere of all transfer to the bearing, does not make the ball move to the seat, so the seat does not put too much pressure, so fixed Torque ball is small, small seat deformation, the sealing function stable, long life, suitable for high pressure, large diameter occasions. Leading spring pre-seat assembly, with self-tightening feature, complete upstream sealing. Each valve has two valve seats, in each direction can be sealed, and therefore there is no flow restraint means is bidirectional. Pneumatic valve has two fixed formula and three type two body structure, the flange bolts convergence, the choice of PTFE sealing insert stainless steel circle, steel springs ensure no rear seat close to the ball, stick sealed. Upper and lower stems are no PTFE bearings, reducing friction and effortless operation, no tabs at the bottom of a small shaft, ball and seals to ensure the access of the orientation. Full Bore: valve flow aperture and tubing used together for pipeline cleaning. Second, product characteristics: 1, effortless operation: the upper and lower ball bearings, reduce conflict, eliminating the import of seal load pressure pushes the ball and immeasurable sealing seat constituted constitute excessive torque. 2, the sealing function reliably: PTFE seals single-sex information embedded in the stainless steel seat, the rear end features a spring metal seat ring ensure satisfactory preload, the valve sealing surface in the course of wear, under the effect of the spring Valve continue to ensure that the outstanding sealing function. 3, structural fire: To avoid showing sudden heat or fire, burned polytetrafluoroethylene seals, there is a greater disclosure, and the growth of the fire, between the ball and seat set fire sealing ring seals when burned, Under the effect of the spring force, the valve seat sealing ring sensitive sphere for constituting the metal to metal seal, play a certain degree of sealing effect. Refractory fit the experimental APl6FA and APl607 specification requires. 4, automatic pressure relief function: When the medium pressure valve in the cavity block abnormal rise beyond the spring preload, retreat from the ball valve, automatic pressure relief arrived in effect, after the pressure relief valve is automatically reset. 5, the discharge line: upper and lower body are set to excrete larvae L, you can view the seat is not a leak occurs in the job, the valve is fully open or fully closed, relieved pressure in the chamber can be directly replace the packing; can be discharged residence was in the cavity, reducing media contamination of the valve. Assistant sealing set the system (customer need when ordering please clarify) 6, the valve seat urgent plan has assisted sealing system, if the seal is damaged or rendered urgent situation which can not be sealed ten green when, after adjuvant injection sealing system to seal surface appropriate sealant) to fix the sealing surface, arrive urgent sealed. When the medium conveyed or enriched small amounts of contaminated particles, in order to protect the sealing surface to ensure a reliable seal arrival, but also for the equipment injection appropriate cleaning agent or lubricant on the sealing surface cleaning. 7, widely used in food, medicine, petroleum, chemical, natural gas, steel, environmental protection, paper and other media to intercept the delivery pipeline or flow. The device can also be given an injection appropriate cleaning agent or lubricant on the sealing surface cleaning. Third, the technical parameters: two way valve, three-valve forging nominal diameter DN50 ~ 1000mm Nominal PN1.6,2.5,4.0,6.4,10.0 MPa; ANSI 150300 600 900 LB; JIS?????? 10? 20? 30? 40? K Flange adapter flange specification JIS, ANSI, GB, JB, HG and other one-way valve cover type Bolt Clamp gland packing V-type PTFE packing, impregnated PTFE asbestos packing, asbestos textile packing, graphite packing way of worm gear drive, electric, pneumatic, hydraulic