lpg regulator vent specs
Does any one know at what line pressure the vent on the lpg regulator opens. I know the regulators are rated at 250 psi on high pressure side and 11" water column on line (low pressure) side but can't...
Forum Discussion
For those of you that might be interested, I inquired of Camco about the low pressure "vent". Following is their reply which says nothing about a diaphragm leak -- thus indicating that an excess pressure in the low pressure line would open the vent:
Thank you for your email. I am assuming you are asking at what pressure does the relief valve open on the second stage; if that is what you are asking, it is designed to open at 2-psig.
The overall specifications for this regulator are:
Factory Set Point:
Inlet Pressure: 100-psig
Outlet Flow: 30-scfh (~70,000 Btu/hr)
Outlet Pressure: 11”wc
Flow Capacity: 160,000 Btu/hr @ 25-psig inlet pressure and 9”w.c. outlet pressure
First Stage:
Max Inlet Pressure is 250-psig
Max Outlet Pressure is 15-psig (nominal 10-psi)
Second Stage:
Max Outlet Pressure is 16”w.c. (11”w.c. nominal factory setting)
Has a Type II relief valve to limit the outlet pressure to 2-psig
This could, I would believe, be caused by 1) a defective secondary diaphragm 2) although highly unlikely to get to 2 psi, a build up of pressure due to other causes which are hard to envision and 3) a defective vent which might open below or above the 2 psi spec.
My reason for going to this subject was to analyze if the sudden drop in line pressure to zero might possibly be a result of the low pressure vent. My conclusion is that this vent is not likely a source of the drop.
Thank you for your email. I am assuming you are asking at what pressure does the relief valve open on the second stage; if that is what you are asking, it is designed to open at 2-psig.
The overall specifications for this regulator are:
Factory Set Point:
Inlet Pressure: 100-psig
Outlet Flow: 30-scfh (~70,000 Btu/hr)
Outlet Pressure: 11”wc
Flow Capacity: 160,000 Btu/hr @ 25-psig inlet pressure and 9”w.c. outlet pressure
First Stage:
Max Inlet Pressure is 250-psig
Max Outlet Pressure is 15-psig (nominal 10-psi)
Second Stage:
Max Outlet Pressure is 16”w.c. (11”w.c. nominal factory setting)
Has a Type II relief valve to limit the outlet pressure to 2-psig
This could, I would believe, be caused by 1) a defective secondary diaphragm 2) although highly unlikely to get to 2 psi, a build up of pressure due to other causes which are hard to envision and 3) a defective vent which might open below or above the 2 psi spec.
My reason for going to this subject was to analyze if the sudden drop in line pressure to zero might possibly be a result of the low pressure vent. My conclusion is that this vent is not likely a source of the drop.
