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  1. moodley

    Convert maunal ball valve to Automatic Shutdown Valve

    Simple Answer : YES There is an ISO standard for topwork mounting (5502 I think)- that most reputable manufacturers adhere to for the mounting of gearboxes and actuators. Any reputable actuator manufacturer will be able to assist. Try this site : www.rotork.co.uk Use of Ball valves as SDV's are...
  2. moodley

    SY50 Scotch Yoke Gear Operator

    The gear operator is most probably manufactured by Ledeen - Part of the Dresser family. Most Grove Valves are equipped with Ledeen operators. Grove/Ledeen/Dresser Flow Control division will be able to help. I am guessing you want maintenance info not operating instructions/methodology.
  3. moodley

    Wafer Check Valve Details

    Thanx Mogens, I appreciate your help. It seems that Crane is the place to start at. I will get a hold of them. The first link you gave was very helpful. Regards, Dev
  4. moodley

    Wafer Check Valve Details

    We have a few wafer check valves manufactured by Mission Valve and Pump. We do not have any information on these items. I tried locating the company via the internet - but had no luck. Can anyone help with info on the valve (maintenance, service etc..) or the manufacturer. Valve details are...
  5. moodley

    Valve Body Material - API 6D Requirements

    I have gone out to tender for the purchase of a lubricated plug valves complying to API 6D 21st Edition. One of the suppliers have quoted to supply an API 6D & NACE MR-01-75 compliant valve. However on reading the material specs the body is made of ASTM A216 Gr WCA. This is not listed in Table...
  6. moodley

    Pipeline Surge Accumulator

    Thanks for the help guys. We have established contact with Flowguard. The do not promise a solution - but are willing to run some numbers for us.
  7. moodley

    Pipeline Surge Accumulator

    We have a problem with pressure surges in our pipline. We are looking at ways to minimise these surges. We want to investigate the use of pressure accumulators that in an overpressure situation could take in the excess pipeline fliud an so reduce the shock on the line. When the pressure returns...
  8. moodley

    Leakage Question

    Both API 598 and API 6D (Spec for Pipeline Valves) specify zero leakage for soft seated valves. However, most pipeline operators determine their own acceptable leakage rates for valves in service (assuming no threat to life). Operational conditions and requirements will help determine the...
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