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  1. #1
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    Pressure Relief Valve Calibration



    Chaps,

    I am trying to find someone that can carry out PRV calibrations for me. I have 6 Henry 'Specials' with a 10-12 week lead on delivery and am trying to get this time down.

    Any ideas?



  2. #2
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    Re: Pressure Relief Valve Calibration

    Speak to Saunders and Weeks in Bristol.
    They could help, there is another company in Avonmouth who do similar. But I cannot remember there name at present.
    Sorry!
    Even for standard certificated PRV'S from Henry take a long time to obtain particularly if certification is needed.
    I have obtained an extension on completion time from the insurance assessor before now.
    Simply because they are not readily available off the shelf.
    Grizzly

  3. #3
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    Re: Pressure Relief Valve Calibration

    Not wanting to go against Grizzly's years of experiance, but 99% of PRV'S i've had calibrated have leaked within days now i have a list of sizes and sites etc and make sure i reccomend replacements well in advance

  4. #4
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    Re: Pressure Relief Valve Calibration

    You aren't using the correct guys then my friend.
    Yours is a valid point none the less. I have indeed heard of issues but don't remember any myself.
    The guys that I have mentioned strip service and rebuild the valves before certificating them.
    They manufacture as well so they know what they are doing.
    If my memory serves me well, the refurb price is not viable for small PRV'S.
    But Hey they do do a fast turn around service.
    So as Steve suggests time is of the essence. The valves do have warranty if I remember correctly.
    A quick phone call would answer what options are available.
    Grizzly

  5. #5
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    Re: Pressure Relief Valve Calibration

    Do you guys deal with Hansen valves?

    In our neck of the woods they have a lot sitting on the shelf at supplier.
    Its an option, but realize its not prefered option changing pipework etc.

    Agree with Grizzly about recalibrations, as we have it done all the time with no problems.

  6. #6
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    Re: Pressure Relief Valve Calibration

    Furmanite do service repair on PRV's in UK

  7. #7
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    Re: Pressure Relief Valve Calibration

    I just had 4 done this week at Saunders & Weeks. I sent them monday and they came back this morning

  8. #8
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    Re: Pressure Relief Valve Calibration

    Quote Originally Posted by Chillin4alivin View Post
    Furmanite do service repair on PRV's in UK
    Is this a form of advertising??

  9. #9
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    Re: Pressure Relief Valve Calibration

    No Its Advise on where to get PRV's serviced mate

  10. #10
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    Re: Pressure Relief Valve Calibration

    Had the same problem as 'James' Leaking valves once calibrated, Only place that returned them working ok had 8 weeks plus lead time, can not put there name up AS THAT IS ADVERTISING !
    Last edited by chillerman2006; 09-09-2011 at 02:55 PM.
    If the World did not Suck, We would all fall off !

  11. #11
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    Re: Pressure Relief Valve Calibration

    Quote Originally Posted by chillerman2006 View Post
    Had the same problem as 'James' Leaking valves once calibrated, Only place that returned them working ok had 8 weeks plus lead time, can not put there name up AS THAT IS ADVERTISING !
    Yeah! you can my friend.
    I agree that it is a thin line which stretches even thinner when stress prevails.
    But if it is genuinely for the benefit of all and not personal gain, nor promoting anyone (Especially those you work for!),
    Then no-one can take offense at that can they.
    After all we are there to help ain't we?

    Grizzly
    Last edited by Grizzly; 09-09-2011 at 03:49 PM.

  12. #12
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    Re: Pressure Relief Valve Calibration

    Quote Originally Posted by Grizzly View Post
    Yeh! you can my friend.
    I agree that it is a thin line which stretches even thinner when stress prevails.
    Evening Grizzly

    Just covering my sore a**

    check out the one with 250f on liquid injection line mate... maybe you can shed some light on whats going on .... sounds odd to me

    http://www.refrigeration-engineer.co...sist-questions

    R's chillerman
    If the World did not Suck, We would all fall off !

  13. #13
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    Re: Pressure Relief Valve Calibration

    It's going to take more than 1 read that's for sure.
    Back shortly.
    Grizzly

  14. #14
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    Re: Pressure Relief Valve Calibration

    Hi chaps, had a company in Aldershot called Daco do it for me. Tested to setting ( went 2% low) and then rechecked to 90% to ensure it has reseated. Great service from them as well, throughly recommend them.

    Seeing the name Furmanite posted above reminded me that a previous company I worked for used them, no problems there either.

    Thanks for the help.

  15. #15
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    Re: Pressure Relief Valve Calibration

    Have you tried Lambda Calibration? We've used them before and were impressed, fast turnaround. More info here http://www.lambda-cal.co.uk/pressure_calibration.php

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