GOOD MORNING.
IS A PILOT OPERATE SAFETY VALVE HAS A BLOW DOWN ADJUSTMENT? IF IT DOES PLS. EXPLAIN TO ME HOW DO YOU PERFORM THE ADJUSTMENT.
THANKS & REGARDS,
ARAFAT
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Pilot Operate Safety Valve
Started by Arafat, Feb 18 2005 01:35 AM
1 reply to this topic
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#1
Posted 18 February 2005 - 01:35 AM
#2
Posted 21 February 2005 - 08:52 AM
Just by looking at figures 6-10 in API RP 520, I see that at least some pilot operated relief valves (PORVs) have a blowdown adjustment. For example figure 7 shows an adjustment ring at the bottom of the pilot valve, while figure 6 shows a variable orifice in the pilot line.
If your question is related to a specific brand and type of PORV, you may contact the vendor of that valve to ask if and how you can do the blowdown adjustment.
If your question is related to a specific brand and type of PORV, you may contact the vendor of that valve to ask if and how you can do the blowdown adjustment.
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