Vintage Double Hose

Posted: **Sun Oct 11, 2020 8:09 pm**

Good Evening All, I’m rebuilding a US Divers K valve with a high pressure port on it. Can anyone tell me what the high pressure port oring should be size wise? I have the old one but it’s in to poor of shape to compare.

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Posted: **Mon Oct 12, 2020 8:44 am**

If I remember correctly that should be a standard -011 oring, on a plug that was/is same as found on regulator first stages.

Posted: **Wed Oct 14, 2020 2:40 am**

antique diver wrote: ↑
Mon Oct 12, 2020 8:44 am
If I remember correctly that should be a standard -011 oring, on a plug that was/is same as found on regulator first stages.

Very good Sir! I installed a -011 and it seems to be right. Do you now if a buna 70 will suffice or should I go with a 90?

Posted: **Wed Oct 14, 2020 9:24 am**

BigRed96 wrote: ↑
Wed Oct 14, 2020 2:40 am

antique diver wrote: ↑
Mon Oct 12, 2020 8:44 am
If I remember correctly that should be a standard -011 oring, on a plug that was/is same as found on regulator first stages.
Very good Sir! I installed a -011 and it seems to be right. Do you now if a buna 70 will suffice or should I go with a 90?

USD used 70's on almost everything on their valves and regulators, including the port plugs and hose ends. A 90 would work fine on that plug too. Some think there is less chance for extrusion with 90's, but I never had an issue with that on their items. Regardless of questionable quality on some other items of that time the machining tolerances on valves and regulators were good, and orings stayed where they belonged.

Posted: **Thu Oct 15, 2020 1:13 am**

antique diver wrote: ↑
Wed Oct 14, 2020 9:24 am

BigRed96 wrote: ↑
Wed Oct 14, 2020 2:40 am

antique diver wrote: ↑
Mon Oct 12, 2020 8:44 am
If I remember correctly that should be a standard -011 oring, on a plug that was/is same as found on regulator first stages.
Very good Sir! I installed a -011 and it seems to be right. Do you now if a buna 70 will suffice or should I go with a 90?

USD used 70's on almost everything on their valves and regulators, including the port plugs and hose ends. A 90 would work fine on that plug too. Some think there is less chance for extrusion with 90's, but I never had an issue with that on their items. Regardless of questionable quality on some other items of that time the machining tolerances on valves and regulators were good, and orings stayed where they belonged.

Thank You very much for the information!

Vintage Double Hose

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