Re: valve stem location

From: <Hafiz>
Date: Wed Dec 05 2007 - 00:14:00 EST

Hello

its is always praticable to install valve in vertical line at operateable heigt. the recomended height of hand wheel of valve is from 1m to 1.3 meter. u can't install the the valve above this height. remeber we always care of hand wheel rather than STEM as u mention.

difference design engineering companies have made their own standard for valve installation interms of height and operatability like Aramco, Shell or JGC. the basic standar is from 1 meter to 1.3 meter from where operator can operate valve easily. valve handwheel must not below 1 meter or above 1.5 meter. if it is necessary to install valve at 1.5 or above then there is a danger or striking head of operator with valve stem. so there is a issuve of safety beyound 1.5 meter.

hopefully it will be helpfull for you

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Hafiz Ali Alvi
PIPING DEPARTMENT
PIPING DESIGN ENGINEER
E-MAIL <a href="/group/PipingDesign/post?postID=IixKCDHkRA6Mxe-zOQfrzjyQs_fVfYPbBL7Q8_i-9_GwLBsDBf_HIkxxPWQf3Zerir6MKyccmo_zP9tHvbdz">halvi@jgc-descon.com.pk</a> PHONE # 042-5812263 (Ext 247)

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"qayamhadi" <qayamhadi@yahoo.com> Sent by: <a href="/group/PipingDesign/post?postID=MTyUHYthrkk8JJLFYTNmtNv1QsHuksNMyAYwuzJ3TNNfRveu4T-8cGFvNRORkXER_uM94kK_xPU5bLZ2tSk8xDzx_1HNLw">PipingDesign@yahoogroups.com</a> 12/05/2007 09:45 AM
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         Subject:        [PipingDesign] valve stem location

Hi All,
Can anyody please help me on valve stem location. I have read that when we have a valve at elevation it is not reccommended to place the the stem of valve below horizontal level . WHY? what is the reason for this ?
Also can some one tell me how we determinr the Valve Stem height ? Waiting for a reply
Many Thanks,
Qayam

[Non-text portions of this message have been removed] Received on Wed Dec 05 00:14:00 2007