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  1. ER_Azza

    Testing (Hydro) of a spare valve

    Hi All Need a bit of opinion. I've work at different companies and many have slightly different rules when it comes to using a spare valve (new or refurbished). When a valve (out of storage) is to be used, it will need to undergo a hydro test if the last test was done on it more than a year...
  2. ER_Azza

    Aviation Gas

    Hi All I aviation gas being a "dry" fluid, I suspect it is affecting the seal & potentially the seat. CG-PTFE, first time I encounter this specific product. Unfortunately, the valve specifications for this company is not as comprehensive. Pretty much the same across for many fuel type. I have...
  3. ER_Azza

    Aviation Gas

    Hi All It is Trunnion ball Valve. With actuator attached. CL150, 6". When disconnected/engage actuator still working. Manual operation of the valve becomes very hard over time. Valve operate full open or full close. Average of twice a day - to open and to close. Natural head of the tank to a...
  4. ER_Azza

    Aviation Gas

    Hi Working at the fuel terminal, I encounter ball valve issue. It gets pretty tight (only jerky motion) when trying to operate it. (The ball valve is after the tank skin gate valve and strainer) It gets harder to operate over time. Had to replace the valve every two to three years it seems...
  5. ER_Azza

    Valve orientation

    Hi Gents Thanks for the quick response. Our current setup has spec blind between the two (regular) gate valves. Everytime when we need to isolate the system, it is always a drama trying to shut the gate valves. It passes, coz it can't seat properly. Danlap idea of putting in steam injection...
  6. ER_Azza

    Valve orientation

    In a processing unit, 2 x 20” gate valves serve as the battery limit isolation to the venting flare. These valves don’t operate regularly. Possibly, once every 18 months. But when we do operate them, the deposit on the seat will result in the valve unable to close fully -passing. I wonder if...

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