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  1. LeonInst

    Control Valve Blocked In Gas Service

    Sorry, I've just looked at the valve catalogue and I'm pretty sure it is a Blakeborough BV803. It is top and bottom guided (one suggestion was that there may be debris in the bottom guide preventing it from moving down) and it has a 'v'-port plug. You're right in saying that if the stem was to...
  2. LeonInst

    Control Valve Blocked In Gas Service

    By no control I mean the valve position seems to have no effect on the pressure in the vessel. The pressure in Vessel 1 is currently just relying on the pressure upstream to stay high enough at present. The process engineers continue to insist that the valve cannot be opening because there...
  3. LeonInst

    Service engineer for actuators and control equipment

    http://www.newforestinstruments.co.uk/ This company offers a similar service in Fawley area, although site is currently under construction (I don't work for them but have previously dealt with them). I would say however that offering a one man service isn't as easy as most larger companies...
  4. LeonInst

    Control Valve Blocked In Gas Service

    Hi. I'm new here, so my first question concerns a problem we've had with a control valve. First, a few details: Valve is used in a spillback system on a Refinery Crude Unit. The valve is on a line from the discharge vessel (we'll call it vessel 3, operating pressure 6-7kg/cm) of a compressor...

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