cashco POSR-1 Руководство по установке, эксплуатации и техническому обслуживанию
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PILOT OPERATED PRESSURE RE DUC ING REGULATOR
. DESCRIPTION AND SCOPE
I
The POSR-1 is a pilot operated pressure reducing reg u la tor used to control downstream (P
POSR-1-20 is a pressure loaded (no pilot) option. Sizes are 1/2", 3/4" and 1" (DN15, 20 and 25). The unit is suitable
for steam service only. Refer to Technical Bulletin POSR-1-TB for design conditions and selection recommendations.
NOT RECOMMENDED FOR DEAD END SERVICE!
II. INSTALLATION
A. General:
Do not dead end (no flow demand) downstream of POSR-1
if P
- Inlet Pressure is greater than max i mum allowable
1
outlet design pressure.
Spring Range
5-15 psig (0.34-1.03 Barg)
10-40 psig (0.69-2.8 Barg)
30-80 psig (2.1-5.5 Barg)
70-150 psig (4.8-10.3 Barg)
B. Piping the Valve:
1. An inlet block valve should always be in stalled.
2. If service application is continuous such that
shut down is not readily accomplished, it is
recommended that an inlet block valve, outlet
block valve, and a manual bypass valve be
installed.
3. Pipe unions are recommended for NPT
screwed in stal la tions to allow removal from
piping.
4. An outlet pressure gauge should be lo cat ed
ap prox i mate ly ten pipe diameters down stream,
and within sight.
INSTALLATION, OPERATION & MAINTENANCE MANUAL (IOM)
MODEL POSR-1
WARNING
Max. Allowable
Out let Pressure
100 psig (6.9 Barg)
200 psig (13.8 Barg)
200 psig (13.8 Barg)
200 psig (13.8 Barg)
SECTION I
SECTION II
TR
HP Cond.
Recommended Piping Schematic for POSR-1
TR
HP Cond.
Recommended Piping Schematic for POSR-1-20
Installation of adequate overpressure pro tec tion is
recommended to pro tect the reg u la tor from overpressure
and all down stream equip ment from damage in the event
of regulator failure.
Pilot
Valve
Main
Valve
TR
MP/LP Cond.
FIGURE 1
Airset or
Air
Manual Loader
Supply
Main
Valve
TR
MP/LP Cond.
FIGURE 2
CAUTION
IOM-POSR-1
02-16
) pressure. The
2
PI
SRV
PI
SRV