Gas Valve - proof of closure

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Old 12-14-02, 12:45 PM
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Gas Valve - proof of closure

Under CSD - 1 regulations, does a proof of closure gas valve on a fuel train require a manual reset?
Currenty have Honeywell 5055A series valves with auto actuators, but this does not meet the requirements under CSD -1.

This is an industrial type setting, not residental.

Anyone here gone through this?
 
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Old 12-14-02, 01:28 PM
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notuboo:

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Old 12-15-02, 06:55 AM
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csd-1 is a spec that calls for cetain testing protocol. there is no such thing as manual reset for a proof of closure switch. if the switch is not made it will remain in purge state. proof of closure falls under "pre ignition interlocks" where program does not advance to pilot until conditions are met. hope this helps.
 
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Old 12-15-02, 07:48 AM
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The bubble test for closure is a part of CSD-1, agreed.
I don't know if the double seal overtravel specification requires some sort of mechanical means to prove an actual closure had occured.
 
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