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...
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...
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...
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...