din valve vs. k-valve

[mpick]

What are the advantages/disadvantages of the din valve as opposed to a K-valve. I am getting ready to but either some 100'sr 120's so I don't run out of air so quickly and I don't know what to buy.

[WreckDiver]

Go with PST E series 100 or 120 they come with a DIN/K valve. as for your Reg if you dont rent or travel DIN is the way to go. most dive shops use the cheaper K valve. Pressures K valve 232 bar Din 300 + up

[mpick]

I can't find anyone near Jax that sells PST Anyone know where to buy them and what is a fair price
Thanks

[dagodiver]

Originally posted by mpick
I can't find anyone near Jax that sells PST Anyone know where to buy them and what is a fair price
Thanks


Try lloyd bailey scuba in gainsville.
or go to cave country.
Just bought 3 E8-130's there great.
price anywhere from 290-330 out the door
filled should be good.
Dago

[swimndive]

mpick,
Instead of a face seal o ring, a din valve uses a captured o ring to make it's seal. In addition, the regulator to valve connection can handle higher pressures and more abuse. Din regs don't have yoke screws, so you won't have a yoke nut sticking out on the backside of your tank valve. This may or may not be important to you.

[Spear One]

If you really want to build higher margin of safety into your diving...go Din valve!

[mpick]

I assume cave country is a website could you tell me the url
Thanks


Originally posted by dagodiver
Try lloyd bailey scuba in gainsville.
or go to cave country.
Just bought 3 E8-130's there great.
price anywhere from 290-330 out the door
filled should be good.
Dago

[mpick]

SpearOne
Thanks
That is all I need to know, I want to build all the safety into my diving that I can. I'm not sure I need to know all the technical stuff but I do like knowing that a Din is safer




Originally posted by Spear One
If you really want to build higher margin of safety into your diving...go Din valve!

[Speargun]

Originally posted by mpick
I can't find anyone near Jax that sells PST Anyone know where to buy them and what is a fair price
Thanks I just price the PST E-7 HP-120 at Divers Direct for $299 + tax. The nearest store to you would most likely be in Orlando so you would need to figure in shipping or a drive to Orlando. My LDS quoted me $325 O2 clean & ready to go.
Good luck

Check here to find a PST dealer near you:
http://www.pstscuba.com/deal.htm#FL

[Spear One]

Once a DIN valve O ring seats, it is very rare for it to let loose during a dive. Yokes work, but just not as reliable!

[dagodiver]

Originally posted by mpick
I assume cave country is a website could you tell me the url
Thanks

Cave country is the north central florida area.

[deepstops]

Originally posted by mpick
I can't find anyone near Jax that sells PST Anyone know where to buy them and what is a fair price
Thanks

http://www.sprucecreekscuba.com/

These guys are in Port Orange. Our group here in SE FL bought a pallet of E8-130s from them and got a sweet deal.

[Speargun]

OK. Just to clarify a point in case you didn't know mpick. There are two type of tanks that you will find with DIN valves, HIGH pressure and LOW pressure.
The HP tanks like the E-7's are 7.25 inches in diameter and are rated at 3500 psi.
The LP tanks like the E-8's are 8 inches in diameter and are rated at 2450 psi (I think).
The HP's are the same diameter as an aluminum 80 and just a little taller. The LP's are a bit fatter and weigh a bit more and some BC straps are just barely long enough to go around them. They also won't fit into a standard tank rack unless it's adjustable.
The upside to a the LP's is that, even though they are rated at 2450, you can usually get your shop to over-fill them and carry a lot more air down with you. This is why cave divers like them so much. If I remember correctly, a LP 104 can be filled to hold about 140 cu. ft. of air.

It all basically comes down to personal preference. I like the PST HP-120 due to the size/weight issue. It's big enough to give me plenty of bottom time without being too bulky. If I was looking for more bottom time or diving caves where you can never have too much air, I would go with LP's.

Back to the original question... Go DIN. I converted my reg from yoke to DIN and bought an adapter in case I ever needed to use my regs on a yoke setup. (i.e. rental tank)

My .02

[Spear One]

I just bought 8 Faber HP 120 Steels. (3500psi) love em!

[TGuthrie]

All the PST E-series tanks are rated at the same working pressure, 3442psi. The E-7s are 7.25in diameter and the E-8s are 8in just like the old Lp's. They are all 3/4in neck now instead of the 5/8in neck in the old HPs. You can put a Din valve in any tank you want to, but you are not able to put a yoke valve in the old hps with 5/8 in neck. When they rated the E-series tanks at 3442 they "cheated" the DOT which requires a Din valve on any tank rated at 3500 psi or higher, now they come with valves that can be used with either.

[dagodiver]

Originally posted by TGuthrie
All the PST E-series tanks are rated at the same working pressure, 3442psi. The E-7s are 7.25in diameter and the E-8s are 8in just like the old Lp's. They are all 3/4in neck now instead of the 5/8in neck in the old HPs. You can put a Din valve in any tank you want to, but you are not able to put a yoke valve in the old hps with 5/8 in neck. When they rated the E-series tanks at 3442 they "cheated" the DOT which requires a Din valve on any tank rated at 3500 psi or higher, now they come with valves that can be used with either.

Thanks TGuthrie, saved me alot of typing
just got 3 E8-130's to cool......
Dago

[mpick]

I think I would be smart to buy the e7's since I do a lot of diving from charters. and there probably isn't a lot of difference in bottom time.
Thanks for all the advice. Now all I have to do is find the closest and the best deal