Aqua Environment Inc 873-5000 Instrucciones de uso y mantenimiento
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OPERATION AND MAINTENANCE
MODEL 873-1500 & -5000 REGULATORS
The model 873 is a piston type hand loading
regulator. It utilizes a balanced poppet design for high
flow and minimum effect of inlet pressure on outlet
pressure. The poppet assembly is contained in a
cartridge with internal filtration for easy in-field
changing. The regulator is self venting but is
optionally available without the vent.
SPECIFICATIONS
• Maximum inlet pressure
• Maximum Outlet pressure
873-1500
873-5000
• Flow coefficient (C v )
(equivalent to 0.23" orifice)
• Rise of outlet pressure with
drop of inlet pressure
873-1500
873-5000
• Materials - body and cap -
internals -
seals, -
• Fittings
• Size
INSTALLATION
Use a suitable pipe thread sealant such as Teflon tape
on inlet and outlet threads. Avoid over torquing pipe
thread. Normal torque applied with a 6 or 8 inch long
wrench is ample. Use ample Teflon tape - 3 or 4 turns,
not 1 or 2 turns. The inlet is on the left when facing
the adjusting knob with the two gage ports upward.
An optional panel mounting nut is available (part no.
952). This nut permits mounting the regulator using a
1.25" hole in a panel or plate.
shipped oxygen clean and should NOT be used for
oxygen service as provided. Consult the factory for
details on oxygen service. The 1/2" port is the outlet.
The 1/4" port adjacent to the 1/2" port is the outlet
gauge port. The other two 1/4" ports are the inlet and
inlet gauge ports. Either of these ports can be used
as the inlet. Connect the inlet to the source gas such
as a high pressure storage tank. The outlet is capable
of being adjusted from 0 up. AN OUTLET GAUGE
AND RELIEF VALVE SET NO HIGHER THAN
MAXIMUM
OUTLET
CONNECTED TO THE OUTLET. A 1/2" NPT SIZE
RELIEF VALVE SHOULD BE USED FOR FULL
PROTECTION.
IF THE INLET PRESSURE CAN
EXCEED 6000 PSI A RELIEF
Aqua Environment Inc.
3100 Kerner Blvd, Ste N, San Rafael, CA 94901, (415) 453 8157
6000PSI (40 MPa)
1500 PSI
5000 PSI
0.8
35 PSI/1000 PSI
110 PSI/1000 PSI
aluminum
brass,stainless,
KEL-F, Viton
1/4" FNPT inlet
1/2" FNPT outlet
3" dia x 6" lg
The regulator is NOT
PRESSURE
SHOULD
VALVE SHOULD ALSO BE INSTALLED AT THE
INLET TO PREVENT EXCEEDING 6000 PSI.
OPERATION
Outlet pressure is adjusted by knob 10 (refer to
drawing) to the desired value as read on the outlet
gauge. When reducing the pressure the regulator will
self vent via the vent hole near the cap. This is normal.
When reducing set pressure reduce pressure to below
the new setting then increase pressure to the new
setting. If in-field adjustment is to be avoided, the knob
10 can be replaced by a bolt and lock nut. A 3/8" by 24
thread per inch bolt with a minimum thread length if one
inch is required.
MAINTENANCE & REPAIR
CAUTION
As
particulates or moisture can plug or freeze the internal
filter or valve seat. This can occur when up-stream
dryers are not changed or remain unused for long
periods allowing corrosion materials to accumulate. In
critical applications where it is important not to lose flow,
a larger particulate filter should be used upstream. Also
an orifice such as the Aqua model 796 should be used
downstream. This reduces the tendency to freeze
when moisture is present. Consult factory for details.
The user should establish time intervals for changing
the valve cartridge, filter and upstream dryers based on
experience and service conditions. No representation
is made herein as to time intervals as each use is
unique.
Back-up systems should be used in very
critical applications since field maintenance is hard to
insure.
The poppet cartridge 895 is a factory
assembled item and should be replaced if required and
not disassembled unless absolutely necessary. Spare
cartridges are available at a nominal cost and should be
kept on hand if rapid repairs are required.
CASES THE UNIT CAN BE RETURNED TO THE
FACTORY IF APPLICABLE OR DEALER FOR REPAIR
UNDER WARRANTY OR AT A NOMINAL CHARGE.
Maintenance or repairs should only be done by
qualified personnel in a clean environment by following
the drawings and parts lists herein.
If leakage occurs through the regulator or out the
regulator vent, allow the inlet and outlet pressure to
equalize by shutting off the inlet. If leakage continues
after the inlet and outlet equalize the vent seat 5 or
BE
piston seal 14 are leaking. Replace these. If leakage
stops when the inlet and outlet pressure equalize the
poppet cartridge item 1 is leaking. Replace this.
drw 875-1500 & 5000
with
any
regulator
or
valve,
IN ALL