Parr Instrument Series 3900 - Manual (Page 13)

Hydrogenation Apparatus
w w w . p a r r i n s t . c o m 13
Alternate 1000 and 2000 mL reaction bottles with
a fi berglass covering (71CA2 and 72CA3) can be
furnished for the 3921 Hydrogenator. These coated
bottles are no stronger than the plain bottles, but
the fi berglass envelope will usually retain any
broken glass and prevent the loss of valuable reac-
tants in case of accidental breakage. The maximum
working pressures mentioned above applies to both
plain and coated bottles alike. Both styles use the
same connecting tube and fi ttings.
If higher pressures up to 60 psig are required for
treating large amounts of reactants, users are urged
to purchase the special 2500 mL heavy duty bottle
(72CA4) which is made specifi cally for this purpose.
This is a hand blown, borosilicate glass bottle with
an extra heavy wall which is much stronger than the
standard machine-made bottles.
Stainless Steel Bottle
The breakage hazard which is always present when
using glass bottles can be eliminated by substituting
a 1700 mL stainless steel reaction bottle which can
be used at working pressures up to 60 psig maxi-
mum. The complete stainless steel bottle assembly
with cover, spacer spool, connecting tube and fi t-
tings can be ordered under Cat. No. A129CA3.
To install the stainless bottle, slide the 133CA2
spacer spool onto the polypropylene tube with the
parts arranged so that the plain end of the spool will
rest on the cover, leaving the shallow depression in
the other end of the spool to engage the clamping
screw. Attach the O-ring to the cover, close the bottle
and slide the assembly into the holder. Tighten the
clamping screw and attach the guard screen before
pressurizing the bottle.
A129CA3 Stainless Steel Bottle Assembly