DIN "Dust Cap" - leaking issues

[Marek K]

I want to get some screw-on delrin caps because I don't trust the rubber ones ours came with.

the original ones that came with the DS4 were a total joke. they don't even screw on but rather are pliable plastic thingies that you just stick over the thread.

Yeah, like I said, the ones that came with our two Sherwood DIN fittings were soft rubber. Problem is, they were very short and only fit over the non-threaded orifice end of the fitting. Since they fit rather snugly, I was pretty sure they were reasonably watertight (at least for rinsing).

Unfortunately, I found two or three times that they had slipped off the orifice end -- once while rinsing. :11: I immediately removed the SPG and blew the first stage out with compressed air, just in case. That's when I got these Aqua Lung caps, that allow the o-rings to seal against them.

--Marek

 

[Blackwood]

The DIN caps listed at Dive Rite Express for $8.00 (not that expensive) say they're aluminum, and that they have an "nset designed to fully seal with the regulator DIN fitting preventing moisture from entering." Sounds good... What kind of insert, I wonder?

The cheap caps I have that don't seal are delrin -- plastic!

--Marek

Does anyone have the diverite caps? Are they any good?

 

[Tom Yerian]

Just a note: I have been diving 35 yrs and many ties I have had regs get wet inside. You can have a problem if you just leave the water sit inside over time. Simply,if you get water in 1st stage, put it on a tank of air and gently blow it out through the second stages.You can also take out a couple of ports, and do the same thing! The damage to your regs comes from being to lazy to take the time to blow them dry. As I said I have had no trouble with any of my regs.
Capt. Tom

 

[cool_hardware52]

The female din caps, i.e. the ones for regs are made in two different depths, just like valves are either 200 din or 300 din.

The "200" din caps are shallow and either a 200 din reg, or a 300 din reg will "bottom out" and seal the face oring of the reg on the inside of the cap.

The "300" din caps are deeper, and are fine if used with a 300 din reg, (which of course has longer threads)

The problem arises when a deep 300 din cap is used on a 200 din reg, the face oring on the reg does not contact the inside of the cap, and the oring does not seal.

Just make sure cap bottoms on the oring, and not on the base of the threads.


Tobin