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Bigbella, I will be at my LDS tomorrow and have access to a 3884. I will also bring my callipers and measure the diaphragm. I saw that the kits from Silent Explorers were available, but I didn’t like the price. :) However, if you can get 8 years out of a diaphragm, that $40 really isn’t so...

Thanks for the suggestion, Fibonacci. It appears that your material listed is similar to the EPDM Fibreglass reinforced material. Tensile strength for the Reglin Nitrile is 1800psi, 1500 for the EPDM. Durometer is 70 and 50. I might be able to make a suitable diaphragm out of this material. Of...

This material was my second option McMaster Carr SKU: 2658T51

Hey guys, I have begun producing LP seats out of 1/16 EPDM and a 9/32 punch. I would like to now produce some LP Diaphragms as well. I have had some success making the LP seats fit in the Poseidon Cyklon (don’t want to pay $20 a piece) but I haven’t found a good price for the 1189 diaphragms...

Absolute legend. Thanks for sending it in this format.

Hey guys. Experienced reg service tech here. Let’s take a look at this situation and try to find an answer? This is something that puzzles me. Recently I took my Scuba Pro MK V with balanced adjustable 109 conversion diving. The air temperature was 2 degrees celcius. The water was 3.8 degrees...

The single stage style seats look (to me) to be too small for a Mistral, could it be for the downstream Voit double hose regulator? The model escapes my memory. Erik

Rob from TSM is great. Didn’t want to burden him with another unnecessary question! Maybe some folks here will be able to chime in. It’s more a question asked out of curiosity than necessity. Erik

Hey guys, These were in a parts drawer at my LDS. I initially thought they were for a Mistral or Aqua Master, but upon inspection it appears they are different. There is one Aqua Master seat in the mix, the third seat from the left. Any idea what regulators these seats belong to? Thanks, Erik

Hey Divers, I have two spirotechnique royal mistrals. The seats are decent, those can be polished. What I am looking for is the o ring size that is on the removable volcano orifice. Unlike the USD mistrals, you can actually remove and replaced these as they wear out! Does anyone happen to...

Hi James, Thanks for the info about Trident. I just checked the catalog and found a lot of stuff there that made me say “Hmm, I’ll take one of those!”. Looks like they still carry MK V seats. Erik

Hey guys, I very recently saw the passing of Bryan of VDH and that really shocked me. I had received a lot of help and parts from Bryan and had been buying from him for nearly 10 years. Hell, I just got some kits from him in June. I have several regulators that I was hoping to fix up, mostly...

PM sent! Haha, that pin is certainly made of lead! Erik

Does anyone happen to have a spare pin for the Cyklon 300 laying around? It is part 2182, position 7 on the diagram. Interestingly it is labeled as a valve needle. PM me if you have one and we can work out a deal for the pin. Erik

Here’s the first and second stages. Erik

Sorry for the late response, here are some updates on the project: I was able to remove the yoke adapter from the din setup by putting the din screw in my vice equipped with soft jaws. I put a wrench on the yoke adapter and it came off with very little force. Just had to get some leverage! I...

Just an update, it is a 2305 (Cyklon 300). Now for some humour. My friend, in his infinite wisdom, left the yoke adapter torqued tight on the DIN threads and left it for a couple years after diving. Corrosion set in and the first stage adapter very well could be “cemented” to the DIN threads. I...

Thank you for providing that link to the page. I can see myself potentially doing it with a flat screw driver or similar probe for the first time but I will eventually upgrade to the Scuba Clinic tool. The video on the other thread showing how to use the probe to align and lock the ring was...

I must’ve gotten it confused with the Jet Stream. Thanks for the clarification. I went through the manuals and to install the diaphragm cover retainer ring it shows a large press. I understand the need for the press, but is it absolutely necessary or is it something I can pick up down the...

I have seen on the Poseidon website that the reg is only “rated” to 164 feet, the maximum limit of the EN250 test. I have never seen depth limits on other literature I have read. Surely as a diaphragm regulator it can go deeper? And if my memory serves me correctly, Nuno Gomes used a Poseidon...