1. Three-piece weldingPneumatic ball valve overview: The
pneumatic three-piece internal threaded ball valve is composed of a double (single) acting pneumatic piston actuator and an internal threaded ball valve. The valve body can be divided into integral type, two-stage type and three-stage type. The valve seat adopts an elastic sealing structure, which is reliable in sealing and easy to open and close. The valve stem adopts a bottom-mounted structure with an inverted seal. When the valve cavity is abnormally increased in pressure, the valve stem will not be impacted. The pneumatic piston actuator adopts low-friction materials to make the bearing sleeve, and the inner and outer surfaces of the cylinder are treated with hard anodized anti-corrosion, which greatly improves the service life of the cylinder. This product has stable performance and is widely used in petrochemical, metallurgical, electric power and other industrial sectors.
product name | Three-piece welded pneumatic ball valve |
Product number | Q661F |
Product caliber | 15-100MM |
Product pressure | 1.0Mpa-4.0 Mpa |
Body material | Cast steel, stainless steel 304, 316, 316L |
Valve plate material | Cast steel, stainless steel 304, 316, 316L |
Drive method | Manual, pneumatic, electric |
Second, the main parameters of the pneumatic actuator:
Pneumatic actuators | AT series, ATE series single and double acting pneumatic actuators |
Supply pressure | 0.4-0.8MPA |
Air connection | G1/4", G1/8", G3/8", G1/2" |
Action form | Single-acting pneumatic actuator, double-acting pneumatic actuator |
Can be equipped with accessories | Solenoid valve, limit switch, two-piece, handwheel mechanism, etc. |
Three, the main parts and materials of the pneumatic actuator:
name | AT pneumatic actuator |
Cylinder | Aluminum alloy type material hard anodized |
End cap | Die-cast aluminum alloy epoxy resin spraying |
piston | Die-cast aluminum |
axis | Steel nickel-phosphorus alloy |
O-ring | NBR |
bolt | 304 stainless steel |
4. Material of main parts and components of three-piece welded pneumatic ball valve:
Part Name | Main material |
Valve body | Cast steel, stainless steel 304, 316, 316L |
Ball core | OCr18Ni9, OCr17Ni12Mo2 |
Valve seat | PTFE |
Stem | OCr18Ni9, OCr17Ni12Mo2 |
filler | PTFE, flexible graphite |