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Post by Dennis on May 11, 2003 19:00:02 GMT -8
Is the R-4 balanced or unbalanced? Is it a downstream design? Is the USD Aquamaster a downstream reg? Which double hose regs have upstream designs, and will they plug shut (can't inhale) if the high pressure seat leaks? What does the "DA" stand for on a "DA Aqua-Master"? And did all Dacor R-4's have a "Dial-A-Breath", or was that an available deluxe feature. Thanks. Dennis |
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Post by Sanford Cooper on May 13, 2003 19:48:25 GMT -8
Hi Dennis, I don't have too much information on Dacor regs but I still own two of them, an R-4, which is completely restored and the other, an R-3, I'm considering having restored. I also own one of the last of the Royal AquaMasters built before production ceased and I have some info that will be helpful to you. Unfortunately my service manual on my R-4 doesn"t describe the operation of the regulator or type of 1st stage design but I can tell you that both the R-3 and R-4 have the dail-a-breath-feature. I seem to recall though that the first generation double diaphram, two stage Dacor regulators did not have this feature. I think these were built prior to 1960. According to the manual for my Royal Aqua Master, and I'm quoting from the service manual, "The 1st stage reduces cylinder pressure to 115 psig intermediate pressure by means of a balanced pressure reducing valve. . . .The 2nd stage consists of a downstream, diaphragm and lever opeerated demand valve. This reduces the 115 psi intermediate pressure to ambient breathing pressure." Hope this helps you out
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Post by Stuart Jefferies on May 15, 2003 12:29:30 GMT -8
Hello Dennis,
Regarding you question on upstream valves. Regulators that used this design had to incorporate a pressure relief valve incase the high pressure seat developed a leak.
Some examples are Nemrod Snark111
Siebe Gorman Merlin MK6
All the Heinke models.
The valve is visible on the back of the Nemrod, and the others have the valve inside behind the diaphragm. If the high pressure seat leaks all these regulators breathe normally. They do not seal up.
The Nemrod will bubble away and the other regulators will free flow .
Hope this is of help.
Stuart
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Post by Dennis on Jun 2, 2003 5:15:14 GMT -8
I see on the front of a Voit 50-Fathom that is says Voit Rubber Company. The 1962 Polaris says AMF Voit. The 1966 Tieste reads AMF Voit Swimmaster. Was AMF a larger company that bought the Voit Rubber Company? Was Swimmaster a division name created by Voit, or did it exist independently prior to being bought by Voit? When did Mares buy Voit?
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