valve opening time taking more than required

hi 

can anyone help me,

valve operating pressure minimum is 58 psi, and normally the valve air fail position is close.

so when i am giving the pressure @ 58 psi, the valves start to open, but it is taking more time to open. it is taking 28 second to open against 18 second,

so what to do so that the valve should open completely within 18 seconds,

please help

  • Hello , great question - I have taken the liberty of moving your inquiry to the valves group where I believe it you will get a quicker response.

    Best Regards,

    Rachelle McWright: Business Development Manager, Dynamic Simulation: U.S. Gulf Coast

  • Hello.
    For CBA930-SR60-CW air stroke to open in 18 sec, you will require a total system Cv above 0.4 (that is all controls accessories in the supply line) and air supply source flow rate above 7 SCFM.
  • In reply to Wazid Hasan:

    Wazid, This solenoid is 0.56 Cv to pressurize the actuator and 0.49 Cv to exhaust. I recommend that you go to the higher flow solenoid, WSNFET8316A381 24/DC. This solenoid has a Cv of 1.5. This will help with your opening and closing response times.

    Bill Reeson

    Global Project Pursuit & Strategic Account Manager | ASCO

    Emerson

    T +1 973 966 2097 | M +1 973 495 8561

    Bill.Reeson@Emerson.com

  • In reply to Bill Reeson:

    I agree with Bill to increase flow capacity of solenoid.

    Kurtis Jensen  |  Instruments Product Manager | Fisher

    T (+1) 641 754-2511  |  Mobile: (+1) 641 485-1805

    kurtis.jensen@emerson.com