Propane Pigtails
I seem to have issues with these every few years. First problem seems to be that the rubber dries, hardens, and starts to crack. I replace them when I am worried about cracking in cold weather. I d...
Forum Discussion
Pigtails have a 'flow limiting' check valve inisde the ACME Nut.
If upstrea/downstream flows are not balanced then the 'ball' moves to the 'closed' position (towards downstream flow direction) thus Limiting the flow of propane (amount of propane availble is diminished if a LEAK shpuld occur)
Opening the OPD/Service Valve too quickly will trip the flow limiting device
To reset one needs to close the OPD, wait 30 seconds and then Open OPD SLOWLY
Two styles of pigtails
Old Version ....there is an EXPOSED thermal bushing on backside of ACME Nut.
New Version....the thermal bushing is covered and just a little of bushing is visible thru slots
That thermal bushing melts in 'high temp' (fire) and allows the internal stub to slide backwardswhich allows OPD spring loaded check valve to close stopping all propane flow from cylinder
Do you have a cover over your cylinders/pigtails/regulator??
Exposed to sunlight WILL cause the pigtail hoses to deteriorate in just a few years.
Replace at any signs of hoses cracking, becoming brittle, malfunctioning (inside of hoses breaking down)-----cylinder pressure on pigtails can be as high as 250# PLUS
A busted pigtail hose (between OPD and REG) WILL allow propane to FLOW at High Pressure and cause a HUGE Vapor Cloud.....not good!
If upstrea/downstream flows are not balanced then the 'ball' moves to the 'closed' position (towards downstream flow direction) thus Limiting the flow of propane (amount of propane availble is diminished if a LEAK shpuld occur)
Opening the OPD/Service Valve too quickly will trip the flow limiting device
To reset one needs to close the OPD, wait 30 seconds and then Open OPD SLOWLY
Two styles of pigtails
Old Version ....there is an EXPOSED thermal bushing on backside of ACME Nut.
New Version....the thermal bushing is covered and just a little of bushing is visible thru slots
That thermal bushing melts in 'high temp' (fire) and allows the internal stub to slide backwardswhich allows OPD spring loaded check valve to close stopping all propane flow from cylinder
Do you have a cover over your cylinders/pigtails/regulator??
Exposed to sunlight WILL cause the pigtail hoses to deteriorate in just a few years.
Replace at any signs of hoses cracking, becoming brittle, malfunctioning (inside of hoses breaking down)-----cylinder pressure on pigtails can be as high as 250# PLUS
A busted pigtail hose (between OPD and REG) WILL allow propane to FLOW at High Pressure and cause a HUGE Vapor Cloud.....not good!
