Can you block my orifice?

Digger

OK, I need to block the orifice on a KISS valve - it's one of the metal valves with a flat section on it. And step by step instructions would save me a lot of head scratches.

Oh, and another one. Will the KISS valve manual add work fine with higher IPs? Obviously as the IP increases I'd expect the amount of O2 coming through with the same press to increase, but using one on a compensated first stage isn't going to cause major problems is it?

Cheers,

Digs.

decoweenie

Different options on how to block your orifice...

Option (1)

1. Open the valve.
2. Unscrew the orifice
3. Screw a plug of same thread (i.e. Jetsam sells them)

Option (2)

1. Drive to the pharmacy
2. Buy a lot of Immodium A-D
3. Drive home
4. Drink all of them

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gibbogeo

Jetsam sells the plug for 6 us$. And if you set the IP to +11 bar or less, it will have the same overpressure that the kiss have with normal setup at surface and it works.

JohnDuncan

and why do you want to do that? what are you trying to achieve?

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Classic KISS 014 and Shearwater GF

gibbogeo

You block the orifice, use a normal ds4 without the plug and you don't have limits of depth. Only you have to push the oxygen add button more often.

decoweenie

Then it is no longer a KISS unit, it just became a "broken" eCCR...

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lizardland

I did it on mine last year. Block the orifice, tee in a metering valve downstream of the KISS valve and use a regular 1st stage on the O2. You have an adjustable flow of O2 which has no depth limititation but you can still use the KISS valve as the bypass. Mould a tiny blob of epoxy into the orifice.

I scrapped it and went back to a regular KISS valve. Less bits, less connections, less to go wrong.

Cheers,

Stuart

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Pressure Seeker

Isn't 70m deep enough !!!

Sub Finder

You should know bonnie lad!

decoweenie

The shallowest deep wreck available here is deeper than 70m - not much, but still deeper...

I think the answer to your question is... depends. It depends on the diver and the local dive conditions.

Is the diver ready to dive deeper ?

And even if yes, is the local dive conditions allow it. For example, I lived for 4 years in Belgium and struggled to find local week-end dive sites deeper than 50m as they keep getting closed.

70m is probably deep enough for the majority of the KISS divers, but there are many KISS divers dive much deeper (i.e. Rick Stanton dives his to some insane depth in caves on CK).

__________________
"...after a while you get bored offering advice to a bull that like to keep butting the fence with its head rather than walking through the open gate..."

- Rebreather World PM