Control valve with ball segment

Pneumatic control valve normally closed (NC).

Valve composition:

Valve.

Pneumatic drive.

The positioner.

The filter regulator.


Manufacturing Range

    Valve parameters:

    Nominal diameter: 10 inches.

    Nominal pressure: Class 150.

    Process connection: flanges according to ASME 10” 150 lb RF surface.

    The mounting length is 300 mm.

    Valve body material: A 351 CF8M grade corrosion-resistant steel.

    Material of the seal (stuffing box): PTFE graphite.

    Shell gasket material: 304 graphite core.

    Ball material: chrome-plated stainless steel grade 1.4409.

    Stem material: stainless steel steel grade 1.4404.

    Cv throughput: 2000.

    Tightness of the gate DIN1349: Class IV.

    Gate seal: metal on metal.

    Seat material: AP1C.

    Execution according to ISO15156.


Design Features

    Drive:

    Drive type: spring-diaphragm.

    Safety position: spring closes (normally closed).

    Membrane material: EPDM.

    Adjusting thrust screws to limit the installation angle.

    It does not require special tools for installation and replacement.

    Number of springs (at least): 3 pcs.

    Drive material:

    The case is EN-JS1049 with powder coating.

    The roller membrane is nitrile rubber with a polyester fabric insert.

    springs – 55 Si Cr6.

    drive rod – 37 galvanized / chrome steel.

    The positioner:

    Positioner design: explosion-proof EAC 1Exd II C.

    The LCD display.

    Reading information from the display in any set position (the ability to select the reading direction). 

    Setup using a computer via the SSP interface.

    Adjustable automatic start with four different initialization modes.

    Preset parameters.

    Setting only values that deviate from the standard ones.

    Calibrated travel sensor without gears.

    Additional initialization mode (substitution) for starting the positioner in an emergency

    situation during the operation of the installation without moving the valve over the entire stroke range.

    Permanent storage of all parameters in the EEPROM (protection against power failures).

    A two-wire system with an electrical load of 450 ohms at 20 mA.

    Adjustable output pressure limitation.

    The tight closure function is activated.

    Control: 4-20 mA + HART, position sensor (4-20 Ma output signal).


    Air pressure regulator:

    Air pressure regulator with pressure gauge (stainless steel).

    Body material: Aluminum with connection G ¼.

    The filter is 5 microns.

    Operating inlet pressure: 10 bar.

    Maximum inlet pressure: 12 bar.

    The possibility of venting low air consumption.

    Any mounting position.


Design Standards