Bellows seal single-seat control valve

Size: DN10-600(3/8”-24”)
Bonnet: standard ,heat dissipation ,cryogenic ,bellows
Characteristic: equal percentage ,linear quick open
Pipe connection: flange,butt welding type
Actuator: pneumatic diaphragm actuator,pneumatic piston actuator, electric actuator






    Category:

    Description

    bellows seal single-seat control valve adopts the top guided unbalanced structure, featured by high strength, heavy load, S type flow channel, low pressure drop loss, high flow coefficient, wide adjustable range, high flow characteristic precision, etc. The double sealing structure of the bellows and packing is adopted at the bonnet to thoroughly eliminate the possibility of media leaking to the outside. This kind of control valve is suitable for flow and pressure control of poisonous or precious media.

    The cage adopts the press-in type seat design, which solves the problems of difficult disassembly and high leakage of the traditional thread screw-in type seat and prolongs the service life. The flow to open design is adopted, and the medium flow direction tends to the opening direction of the valve with good controllability of small opening and low flow characteristic distortion. Special cages with noise reduction and anti-cavitation functions can be offered according to the requirements in different service conditions.

    Parameters of control valves

    Trim features: top guided
    unbalanced trim structure
    quick disassembly type structure
    Body type: straight-through type
    angle type
    Bonnet type: bellows type
    Flow characteristic: equal percentage
    linear
    quick open
    Size: DN15-300(1/2”-8”)
    Pressure class: PN1.6、4.0、6.3Mpa(ANSI 150、300、600LB)
    Leakage class: ASME B16.104 Ⅴ(standard type metal seat)
    ASME B16.104 Ⅵ(shut-off soft seat)
    Pipe connection type: flange type
    butt welding type
    Applicable temperature range: -196C°~ 550C°
    Actuator type: pneumatic diaphragm actuator
    pneumatic piston actuator
    electric actuator