Seac Sub Diamond Ice Instructions page 17

DIAMOND, DIAMOND ICE, DIAMOND OCTO REGULATORS.
DIA M O ND REGULATOR - FIRST STA GE
This first stage combines very high performance
with an extremely compact and round shape.
O p era tio n is e nsure d by a b ala nce d di-
aphragm system w hich keeps a constant in-
termediate pressure w ith re f erence to both
tank pressure and depth. In addition, the di-
aphragm completely separates the regulator
core from the external environment, ensuring
total reliability over a long series o f dives.
It is cast as a single block o f copper-plated
brass, subsequently nickel- and chrome-plat-
ed. Internal components are in chrome-plated
brass with music-wire springs and nitrile-rub-
ber seals. Particular care w as given to the sep-
arating diaphragm, made o f a special rubber
w hich remains unchanged and is resistant to
lo w temperatures.
Four lo w-pressure ports, provided with 3/8 "
thread, supply a constant pressure o f 9.8 bars;
all ports are considered pre f erential, as they
are implemented on the same axis; in addi-
tion, t w o o f them are positioned at 30° w ith
regard to the first stage body, so as to make
the correct bending o f the valves inserted
easier; the most important components, such
as the main regulator (on the right) and the
jacket or dry diving suit hose (on the le f t),
shall be connected to these t w o ports.
In decentralized position there are t w o high-
pressure ports (one to the right and the other
to the le f t) with 7/16 " thread and inner hole
having a 0.20 mm. diameter; a diving pres-
sure-gauge may be connected to these high-
pressure ports, to check the internal pressure
o f the cylinder used, by means o f a hose w ith
7/16 " thread male connection.
Warning!
Use only CE certified pressure gauges provid-
ed with standard thread. Do not use any type
o f adapter bet w een the first stage and the
high pressure hose connection.
The DIA M O ND first stage has been designed
to operate with cylinder w orking pressures up
to 300 bar. For pressure exceeding 230 bar it
is advisable to use the version provided with
the 300 bar thread connection (THREA D CO N-
NECTIO N ISO 12209-2/3.2; 300 BAR) imple-
mented in our model DIA M O ND ICE
The DIA M O ND first stage is implemented in
the f ollo w ing versions:
International Y O KE connection
(ISO 12209-1 230 BAR)
THREA D connection
(ISO 12209-2/3.5; 230 BAR)
DIA M O ND ICE REGULATOR
FIRST STA GE
First stage has the same characteristics as the
DIA M O ND version, but w ith the addition o f
the innovative A NTIFREEZE DRY SYSTEM .
This system enables diving under extreme
temperature conditions, w hile keeping oper-
ating characteristics unchanged.
A n antifreeze silicone separating diaphragm,
placed at the end o f the first stage insulates
the regulator mechanics from the outside,
w hile tra nsmit tin g t hro u g h a sim ple a n d
f u nctio n al mech a nism, t h e w a t er ext ern al
pressure needed f or proper and constant bal-
ancing o f the first stage under any pressure
and diving conditions.
This version is recommended f or dives in cold
w aters or mountain lakes w here the w ater
may reach temperatures nearing zero.
The DIA M O ND ICE version First stage is imple-
mented in the f ollo wing versions:
International Yoke connection
(ISO 12209-1 230 BAR)
Thread connection
(ISO 12209-2/3.5; 230 BAR)
Thread connection
(ISO 12209-2/3.2; 300 BAR)
Warning!
To use the Y O KE connection (ISO 12209-1 230
bar) or the THREA D connection (ISO 12209-
2/3.5; 230 bar), you must use a cylinder having
valves fitted with the relevant connections.
We recommend you to keep a common 8 mm
A llen wrench within reach, so that you may
operate on the valves, if needed, to obtain
the right connection. Please note that (the
300 b ar THRE A D co n n ectio n) (ISO 12209-
2/3.2; 300 bar), only valves w ith the relevant
connection should be used.
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