Some Information About Pneumatic Fixed Ball Valve
Pneumatic fixed ball valve
core is fixed, the fixed ball ball valve after pressure does not produce mobile with floating seat, after the medium pressure, mobile seat, make the seal compression on the ball, to ensure the seal Usually under with the ball on the shaft with bearings, operating torque is small, suitable for high pressure and large diameter of the valve Pneumatic fixed ball valve in order to reduce operating torque and increase the reliability of the sealing, Shanghai sichuan resistance to make full use of the oil seal structure characteristics, betting special lubricant between the sealing surface, in order to form a layer of oil film, which increases the sealing, and reduce operating torque, used frequently in high pressure, large diameter ball valve Instructions before pneumatic fixed ball valve operation: 1. Before operation, make sure that the pipe and valve have been flushed.
Pneumatic hard seal ball valve adopts the elastic loading structure, under the condition of normal closed to ensure that the contact between the ball seal face and seat seal, under high temperature conditions, can effectively compensate the heat expansion, avoid friction caused by the high temperature increase hard seal structure of the pneumatic ball valve has the features of other structures can have a high temperature resistant, temperature at the time of more than 200, basic can't meet the requirements of working condition of soft sealing structure, hard seal pneumatic ball valve can be resistant to high temperature of 520, 2520 alloy steel can be resistant to the high temperature of 750 degrees Celsius; 2. Fireproof, the inner part of the hard-sealed ball valve is metal, and the high-temperature performance is above 500 degrees. After the pneumatic ball valve of hard seal is closed, the medium can be effectively isolated from the fire source. 3 high wear-resisting performance, ball core and valve seat surface using carbide surfacing, surface hardness can reach 68, rockwell hardness even some particles in the medium affect the sealing with pneumatic ball hard seal ball valve core is the use of special surface hardening treatment, seat is carbide surfacing, so in good weather during opening and closing of the valve dielectric flushing, particularly suitable for solid particles or abrasive media.
Generally adopt two seat structure,it can also according to user requirements adopted four seat structure Four seat sealing three-way ball valve
has a beautiful appearance The flow direction of medium compact structure is reasonable, it can realize not only the switch, also can make the three channels connected each other, any channel can be closed at the same time, make the other two channels connected, flexible control of the medium inside the pipeline rivers or shunt.High performance pneumatic actuator, double acting type and single acting type (spring reset), gear rack transmission, safe and reliable; The large diameter valve adopts series AW type pneumatic actuator, with reasonable structure, large output torque, double acting type and single acting type.Four-seat sealing three-way ball valve has beautiful appearance, compact and reasonable structure. It can not only realize the switching of medium flow direction, but also make the three channels interconnect with each other. At the same time, it can also close any one channel, make the other two channels connect and control the confluence or the design characteristics of three-way pneumatic three-way ball valve with intermediate quality of flexibal pipeline.