ZSHTRR.Y pneumatic O-type cut-off ball valve is composed of pneumatic transverse piston actuator (hereinafter referred to as pneumatic piston actuator) and O-type series ball valve. It uses compressed air as power, the valve stem drives the ball to rotate 90 degrees in the valve body, realizes the action of full opening to full closure, and has excellent cutting off performance. It is widely used in petroleum, chemical industry, papermaking, metallurgy, sewage treatment, oil tank truck and other industries. It can cut off and control various liquids, gases, slurries and other fluids. It is especially suitable for controlling high viscosity medium with fibers and fine particles.
Specification model
Main technical parameters
Valve body
Type: full diameter sphere clip type sphere.
Nominal diameter (DN): 15 ~ 600mm
Nominal pressure (PN): 1.6, 6.3MPa or ANSI150, 300, 400 and 600, 900Lb RF
Connection: flange connection
Materials: WCB CF8 CF8M
Fillers: Asbestos dip, tetrafluoroethylene, flexible graphite
0 valve components
Spool type: ball type spool
Spool material: CF8, CF8M (polishing, nitriding) or surface spray welding of hard alloy.
Seat material and service temperature: soft seal (R) Teflon -20 ~ +180 C
Filled with Teflon -20 ~ +180 C
Para polyphenyl -40 ~ +350 C
Hard seal (y) 2Cr13, 304, nitriding or
Spray welding of cemented carbide -40 ~ +450 C
Valve shaft material 2Cr13, CF8, CF8M, 17-4PH
Shaft sleeve material casting copper alloy, CF8, CF8M
Schematic diagram of valve seal structure
Executive agencies
ZSH and ZST series cylinder pushing mechanism
Executive Standard Specification
□Main technical performance
○Flow characteristic curve: quick opening characteristic
Actuator configuration and allowable pressure difference Delta P
(1) soft sealed double acting cylinder actuator (air pressure 0.5MPa)
(2)Soft sealed single acting cylinder actuator (air pressure 0.5MPa)
(3)Metal hard sealed double acting cylinder actuator (gas pressure 0.5MPa)
(4)Metal hard seal type single acting cylinder actuating mechanism (air source pressure 0.5MPa)
○Relationship between ball core closing pressure and medium temperature
Main shape and connection dimensions
○The shape and connection dimensions of the horizontal push pneumatic actuator
Note: these dimensions (LS, L1, L2, L3, L4, F, F1, F3) are shown in table 1.6MPa and table 6.4MPa.
