divemaster5734
Full Access Member
Deleted the mechanical fuel pump and mounted a holly at the tank selector solenoid.
Ran that line to a Racor 500 on the passenger side, then to a Mr. Gasket 5psi deadhead regulator, then a gauge, and on to the IP.
Did a pressure test today.
With the regulator set at 1psi the gauge showed almost 3psi, and the holly never shut off.
I've never dealt with that pump before.
I know it won't pressure past 7, but assumed once it did hit that 7psi it would cycle off, and not just keep running.
Then, assuming the deadhead regulator constricted the line, the pressure in front of it would have been the full 7psi, and the set psi would only get past.
I let the pump run for about a minute after hitting the indicated pressure.
The psi stayed steady, but the pump never stopped running.
Which brings up another issue.
Have never dealt with Mr. Gasket stuff before either.
It's supposed to be a 5psi regulator.
I set it at 1psi because all I wanted to do was a low pressure initial fill, then increase incrementally while watching the gauge to verify the operation.
If I'm getting 3 psi at the 1 setting there's either a major tolerance in their accuracy, + or - 200%?, or I have a defective unit.
This is all very brand new to me, I'm used to dealing with industrial controls that have a max .05% tolerance, so this regulator is concerning.
Attached are a picture of the regulator setting and the gauge reading.
Ran that line to a Racor 500 on the passenger side, then to a Mr. Gasket 5psi deadhead regulator, then a gauge, and on to the IP.
Did a pressure test today.
With the regulator set at 1psi the gauge showed almost 3psi, and the holly never shut off.
I've never dealt with that pump before.
I know it won't pressure past 7, but assumed once it did hit that 7psi it would cycle off, and not just keep running.
Then, assuming the deadhead regulator constricted the line, the pressure in front of it would have been the full 7psi, and the set psi would only get past.
I let the pump run for about a minute after hitting the indicated pressure.
The psi stayed steady, but the pump never stopped running.
Which brings up another issue.
Have never dealt with Mr. Gasket stuff before either.
It's supposed to be a 5psi regulator.
I set it at 1psi because all I wanted to do was a low pressure initial fill, then increase incrementally while watching the gauge to verify the operation.
If I'm getting 3 psi at the 1 setting there's either a major tolerance in their accuracy, + or - 200%?, or I have a defective unit.
This is all very brand new to me, I'm used to dealing with industrial controls that have a max .05% tolerance, so this regulator is concerning.
Attached are a picture of the regulator setting and the gauge reading.
You must be registered for see images attach
You must be registered for see images attach