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You have an old style Dive Rite and the link provided in the second reply to your post should take you to the Northeast Scuba Supply website where you can purchase fine thread valve seats.

Torque specifications for most burst discs is pretty low, and I've seen many instances when they leak after installation. Good service shops will always leak test valves after any disassembly/reassembly to insure there are no bubbles.

Agree!

You should ask the seller, scuba.com, why the claim was denied by SCUBAPRO. It shouldn't be a secret to you. I'm a SCUBAPRO dealer and have never had any issues with them accepting returns & making replacements for suit tears. I know you state that you only wore the suit twice - but how long...

Good, informational summary. Nice work.

After consulting my references, I concur with T-bone. It is the PST 65. No other PST is that close to those dimensions. Empty weight for your cylinder is about 26#. Buoyance ranges from empty at -1.5 to full at -6.4.

You would need to post the diameter and length (to the neck) in order for anyone to know with certainty.

Good approach! If you could post any pictures of the stain, I'd love to see it. I would also call Luxfer to report situation. I doubt that anyone with cylinder inspection training put rust inhibitor in an aluminum cylinder. Good luck!

If you truly can't get it out - buy another valve before destroying yours. You can purchase a DGX Pro Valve for $39 DGX Premium Pro Valve, Right (Typical Side) | Dive Gear Express®

Joes, you're fine. If it's 20 years old and you're uncertain how it has been maintained, I'd recommend having the valve serviced by a knowledgeable tech at the LDS, including the replacement of the PRD, and scrapping the boot if you plan to do any salt water diving. Only issues I see with...

Good advice you should follow!

Only one will. Genesis Convertible 200 Bar Yoke/Din KA-70 valve. Comes in sealed bag from factory with O2 cleaned tag inside the bag. You're correct about the limitations stated from other manufacturers - Thermo, Sherwood, etc. Only negative with the Genesis valve is that when it needs a...

I see no reason not to lubricate. I use a small amount of Christo-Lube MCG 111 on the threads of HP seats before installing in the valve body. While some seats appear to have some type of coating, others don't. As long as the amount is small and it is compatible with tanks in nitrox service...

@subzero, your valve is fine, as it relates to the hole. We have several new Blue Steel valves in our Shop with the holes, also. The purpose is as described - to make it safer for a technician to recognize a valve that is pressurized. It doesn't degrade the safety of the valve. The LDS that...

What you do with your tank is on you. As long as you have the equipment (or have a Shop) to fill/blend the gas, you're good. If you bring your tank to our Shop to get a nitrox fill (a partial pressure fill from us), we will evaluate the tank to determine if it has been properly oxygen cleaned...

I'm a valve repair tech, and work on a lot of valves. Haven't seen problems (so far) with the VX5000s that have come through our Shop. Sorry to hear you're having problems. If you're in the market for a new valve, I recommend Genesis KA-70 for folks that are using the tanks for Nitrox as the...

In its Fill Station Operator Hazmat training, PSI recommends filling air at 300-600 psi/min, nitrox at 200 psi/min, oxygen at 60 psi/min.

You're correct, Jim. You could easily wind up with less than 365 days on your viz depending upon what time of the month you have it done. Not a perfect world - just the one we live in. Someone mentioned in an earlier post about punching the decal with a future month after the 15th. While...

Totally the discretion of the business filling the tank. We consider the viz (and hydro) good through the last day of the month prior to the inspection. For example, if you have an August -15 viz sticker, we'd fill the cylinder through July 31, 2016. Again - totally up to who fills it. Their...

I struggled with what you seem to be struggling with after completing training. Until I started inspecting a lot of cylinders, I really didn't have any experience to evaluate thread wear in scuba cylinders. One suggestion for you - If you have a hydro station nearby (as I did), befriend the...