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Question on valves with High Pressure port.
Posted: Sat Dec 09, 2017 1:15 pm
by ScubaLawyer
Quick question about the old Dacor/Seamco and other tank valves with the HP port. How exactly does that work? Couldn't find a diagram anywhere. If the valve is turned off and no regulator on the tank, is the HP port pressurized? In other words, can you have a full tank, valve in off position, and remove the plug without a s☆☆t-load of air coming out? Thanks. Mark
Re: Question on valves with High Pressure port.
Posted: Sat Dec 09, 2017 2:12 pm
by swimjim
I can speak for the DACOR J Valves. I use those all the time. When the valve is closed there is no pressure to the port. You can change spg's from full tank to full tank without a problem. I routinely use regs like my DivAir. With the short yokes, they don't play well with banjo fittings. At Fortune Pond I dive them well past 100 feet. It gives me a warm fuzzy knowing how much air I have left!
Re: Question on valves with High Pressure port.
Posted: Sat Dec 09, 2017 2:52 pm
by ScubaLawyer
Thanks Jim. That is what I had always heard but was never sure. Going to try and find a 3/4 K-valve with HP port so I can use one of my DH that has a standard yoke with a SPG. Any one have one out there for a reasonable price? Thanks. Mark
Re: Question on valves with High Pressure port.
Posted: Sat Dec 09, 2017 5:27 pm
by luis
The Dacor and most of the other valves with ports are not pressurized when valve is shot-off, but I do remember at least one valve type that was pressurized. It was odd and it was a surprise. I can’t remember what brand name.
Re: Question on valves with High Pressure port.
Posted: Sat Dec 09, 2017 5:38 pm
by ScubaLawyer
luis wrote:The Dacor and most of the other valves with ports are not pressurized when valve is shot-off, but I do remember at least one valve type that was pressurized. It was odd and it was a surprise. I can’t remember what brand name.
Good to know. Thanks Luis.