mersey
Well-Known Member
While in the bilges today, I noticed I don't have a pressure relief valve on my calorifier and water is building up..
My setup is as follows:
Tanks are low down and water is pulled up by a Jabsco Sensor Max VSD 17, 31755-0200, Running pressure: 1.4bar (20psi). Shut-off pressure: 2.1bar (30psi). No need for an accumulator tank with this pump.
Calorifier is a Allpa Oceanhelm Nautic Boiler 20L, 3.5 BAR.
Appears to be a non-return valve on water out (top), connected onto the calorifer.
The cold water in (bottom), has a drain valve connected to the calorifier then a non-return valve connected to that.
I won't go into the engine connections as I'm happy with these.
No pressure relief valve anywhere, not on the calorifier or on the hot water output line.
No expansion vessel/tank anywhere.
The pressure is leaking out of the handle(not the drain valve's hole) that opens the drain valve connected at the bottom of the calorifier, cold water in.
I understand I need to put a pressure relief valve on the hot water output, presumably that can be before or after the non-return.
I'm looking first to install a pressure relief valve, then later an expansion tank, can live with the small hot water loss in the mean time, if its coming out of a pressure relief valve and can be routed overboard.
My questions are:
If I install a pressure relief valve, is it likely the existing drain will stop leaking?
The pressure relief valve needs to be inline, rather than going directly onto the calorifier as a seperate device. Can anyone recommend a suitable one, that as well as and in/out for the water also has a port for connecting a hose, that I can then route overboard?
Thanks!
My setup is as follows:
Tanks are low down and water is pulled up by a Jabsco Sensor Max VSD 17, 31755-0200, Running pressure: 1.4bar (20psi). Shut-off pressure: 2.1bar (30psi). No need for an accumulator tank with this pump.
Calorifier is a Allpa Oceanhelm Nautic Boiler 20L, 3.5 BAR.
Appears to be a non-return valve on water out (top), connected onto the calorifer.
The cold water in (bottom), has a drain valve connected to the calorifier then a non-return valve connected to that.
I won't go into the engine connections as I'm happy with these.
No pressure relief valve anywhere, not on the calorifier or on the hot water output line.
No expansion vessel/tank anywhere.
The pressure is leaking out of the handle(not the drain valve's hole) that opens the drain valve connected at the bottom of the calorifier, cold water in.
I understand I need to put a pressure relief valve on the hot water output, presumably that can be before or after the non-return.
I'm looking first to install a pressure relief valve, then later an expansion tank, can live with the small hot water loss in the mean time, if its coming out of a pressure relief valve and can be routed overboard.
My questions are:
If I install a pressure relief valve, is it likely the existing drain will stop leaking?
The pressure relief valve needs to be inline, rather than going directly onto the calorifier as a seperate device. Can anyone recommend a suitable one, that as well as and in/out for the water also has a port for connecting a hose, that I can then route overboard?
Thanks!
