Aqua Environment Inc 211 Manuel d'utilisation et d'entretien du propriétaire

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OPERATION AND MAINTENANCE
MODEL 211 BACK PRESSURE REGULATOR
GENERAL
Also known as a priority valve, the model 211 is a fully
balanced, economical regulator. It serves a wide variety
of uses, however it's main use is on small compressors.
The regulator will improve moisture separator efficiency
and filter life as much as 450%.
maintaining pressure in the separator and filter at 1800
PSI or more when tank pressure is lower. It has two
outlet ports permitting attachment of a filling yoke and
gauge directly to the regulator. This eliminates costly
fittings.
SPECIFICATIONS
• Maximum rated pressure - 6000 PSI (40 MPa)
• Set pressure - 1800 PSI (adjustable 300 to 5000)
• Materials -
Anodized aluminum body, brass,
stainless steel, Viton seals
• Flow capacity - 2 to 50 SCFM
• Leakage -
Zero external; 0.05 SCFM internal
• Ports -
1/4" female pipe thread (NPT)
• Size -
3 1/2" x 1 1/2" x 1"
INSTALLATION
Use a suitable pipe thread sealant such as teflon tape
on the inlet and outlet ports. Plug the second outlet
port if not used. Connect the inlet to the source gas
such as a compressor. If the regulator is installed in a
piping line insure it is adequately supported or adjacent
piping is supported so any possible force on the
regulator or piping will not damage or break the piping.
The regulator is NOT shipped oxygen clean and
should NOT be used for oxygen service as provided.
Consult the factory for details on oxygen service.
OPERATION
In operation the back pressure regulator will maintain its
set pressure upstream and allow just enough gas flow
to hold this pressure.
adjusted by loosening the 7/8" hex nut and turning the
adjusting screw with a 5/16" Allen wrench.
pressure is pressure at the inlet port when gas is
flowing through the regulator. The gauge connected
to the outlet gauge port does not read set pressure. It
reads pressure of the tank being filled down stream of
the regulator.
AQUA ENVIRONMENT CO., INC.
3100 Kerner Blvd., Suite N, San Rafael, CA. 94901, (415) 453 8157
This is done by
The set pressure can be
MAINTANENCE & REPAIR
Routine maintenance is generally not required. Under
extended or severe operation it is helpful to relubricate
the poppet seal item 8. (see drawing on opposite side).
To disassemble, loosen nut 6 and remove adjusting
screw 5 along with spring 7 and guide 4. Remove seat
10 using a 1/8" Allen wrench. Push out poppet 3, seal
8, and 13. Avoid using sharp instruments to remove
seal. A paper clip bent sharply and with rounded tip
works well to fish out seal 8 from the body 1. Slip seal 8
then back up 13 on poppet 3 and position about 1/8"
from poppet shoulder as shown on the drawing. Fully
pack area between the shoulder and seal with grease.
Also pack about a 1/8" area on other side of seal. Use
Cristo-Lube MCG 121 grease or equivalent, per MIL-G-
27617 types 2 & 3. Drop poppet and seal back into the
body. Lightly grease the threads and seal 10 on seat 2
and screw tightly into body.
guide and adjusting screw as shown. Reset regulator
by applying pressure to the inlet and adjusting set
screw 5 so flow starts at desired set pressure.
Excessive leakage can occur internally between the
inlet and outlets resulting in a drop in set pressure.
This
is generally due to dirt or other particulates
damaging the seat 2.
reduced by lightly tapping ball 9 against seat 2 thus
forming a new seal surface.
inserting a 1/4" rod through the adjusting screw hole
and tapping with a hammer. If this does not work, the
seat 2 must be replaced.
A repair kit consisting of seat, poppet, and seals (part
number 211-12) is available.
IN ALL CASES THE UNIT CAN BE RETURNED TO
THE FACTORY FOR REPAIR.
Set
drw 550
980327, 020906RM
Reinstall spring, spring
Leakage can sometimes be
This can be done by