OTF
Coney Island Whitefish Biologist
TL;DR: does anyone know a source for rebuild kits for the manifold below, or the o-ring specs to order new ones from a general supplier?
I'm posting this both as a question to the hive-mind and hopefully a future resource for other people rebuilding these manifolds. I've seen a few people post recently about buying/selling this style of old(ish) manifold, the Sherwood SVB6307D. It seems they're often employed by those of us doubling up second-hand high pressure steel tanks on a budget.
But diving big doubles probably means diving mixed gas, and diving mixed gas probably means partial pressure blending, which necessitates proper O2 cleaning and O2 compatible seals. So I'm trying to make this manifold O2 clean and I imagine other people are too. O-ring kits (let alone viton kits) don't seem readily available and the o-ring specs aren't clearly listed anywhere.
Does anyone know a source for kits? Or the specs (size, best material, and durometer) to order from an o-ring supplier? Has anyone else rebuilt this manifold?
There is an old parts catalog available here: https://www.historicaldivingequipment.com/uploads/7/3/3/8/73382381/cylinder_valves.pdf with some useful information including this page:
I'm looking for specs on:
If nobody has an authoritative answer I'll post the caliper measurements I took, the o-rings I order, and eventually an update on whether or not the manifold blew up and killed me.
I'm posting this both as a question to the hive-mind and hopefully a future resource for other people rebuilding these manifolds. I've seen a few people post recently about buying/selling this style of old(ish) manifold, the Sherwood SVB6307D. It seems they're often employed by those of us doubling up second-hand high pressure steel tanks on a budget.
But diving big doubles probably means diving mixed gas, and diving mixed gas probably means partial pressure blending, which necessitates proper O2 cleaning and O2 compatible seals. So I'm trying to make this manifold O2 clean and I imagine other people are too. O-ring kits (let alone viton kits) don't seem readily available and the o-ring specs aren't clearly listed anywhere.
Does anyone know a source for kits? Or the specs (size, best material, and durometer) to order from an o-ring supplier? Has anyone else rebuilt this manifold?
There is an old parts catalog available here: https://www.historicaldivingequipment.com/uploads/7/3/3/8/73382381/cylinder_valves.pdf with some useful information including this page:
I'm looking for specs on:
- Nipple o-ring outer end "G010K" (which I believe is a #010 size)
- Nipple o-ring inner end "G011k" (which I believe is a #011 size)
- Bonnet Nut o-ring "G1600-200A" (no idea)
- Stem o-ring "G011L" (again I believe this is a #011, but maybe a different hardness from the "G011K"?)
If nobody has an authoritative answer I'll post the caliper measurements I took, the o-rings I order, and eventually an update on whether or not the manifold blew up and killed me.
