Tom_Ivan
Contributor
Hey everyone.
I have an old unbalanced piston regulator that I think is a MK1 clone. The HP seat carrier has a hex head instead of the two holes for putting a pin spanner in.
Anyway, we've been diving on this problem free for a while when all of a sudden we started getting air leaking out the little hole that is provided for removing the seat. There is no leak if the cylinder is only cracked a little and the IP stays below about 130psi but after that we get a very big leak.
Am I correct in thinking that this is an HP seat failure and has anyone had this before? It was very sudden. Worked perfectly on one dive and failed two days later.
I've removed the seat and had a look, run my fingernail around etc to try find any damage but nothing detectible that way.
Also for interest I placed a small o ring into the carrier before placing the seat back in and repressurized it. The pressure that the leak occurred dropped down to 80psi. I think something is happening when the piston touches the seat that causes the leak.
I expect that I will have an extremely difficult time finding a replacement HP seat for this reg, especially in New Zealand. If there is anything that I could try to get this reg to seal I'd be very thankful for the suggestion.
Cheers
I have an old unbalanced piston regulator that I think is a MK1 clone. The HP seat carrier has a hex head instead of the two holes for putting a pin spanner in.
Anyway, we've been diving on this problem free for a while when all of a sudden we started getting air leaking out the little hole that is provided for removing the seat. There is no leak if the cylinder is only cracked a little and the IP stays below about 130psi but after that we get a very big leak.
Am I correct in thinking that this is an HP seat failure and has anyone had this before? It was very sudden. Worked perfectly on one dive and failed two days later.
I've removed the seat and had a look, run my fingernail around etc to try find any damage but nothing detectible that way.
Also for interest I placed a small o ring into the carrier before placing the seat back in and repressurized it. The pressure that the leak occurred dropped down to 80psi. I think something is happening when the piston touches the seat that causes the leak.
I expect that I will have an extremely difficult time finding a replacement HP seat for this reg, especially in New Zealand. If there is anything that I could try to get this reg to seal I'd be very thankful for the suggestion.
Cheers