GP-2000K1, K3, K6

GP-2000K1, K3, K6
Bulletin AY-719-B
GP-2000 K1, K3 and K6
Pressure Reducing Valve
Installation and Maintenance Instructions
Typical Single Stage Reduction Installation (for Steam)
Minimum 20 Pipe Diameters to
First Turn or Valve
(Outlet Pipe Diameter)
Minimum 10 Pipe Diameters
(Inlet Pipe Diameter)
Armstrong
Control Panel
Air In
Gate Control Pipe
Valve (Pitch Down)
Armstrong
Strainer
Safety Valve
GP-2000K
Bypass
Globe
Valve
Minimum 10
Pipe
Diameters
Armstrong
Trap
Fig. 1-1
Installation Instructions
1. An Armstrong Inverted Bucket Steam Trap is
recommended to drain condensate at inlet of PRV.
5. If two stage reduction is needed, a minimum of 20
pipe diameters between valves is recommended.
2. An Armstrong Y-strainer should be installed before
the PRV to reduce the chance of dirt fouling.
6. By-pass line around PRV will allow system
operation while valve is being serviced.
3. Pressure gauges should be installed before and
after the PRV. The downstream gauge should be
installed in or near the control pipe (5/16" O.D.).
7. Install PRV with main diaphragm housing down
and making sure the flow is in the direction of the
arrow on the PRV body.
4. Control pipe connects into a 1/4" tapping on the
side of the pilot valve. Be certain the control pipe
is pitched away from the PRV. Irratic control
could result if this is not done. Pipe length should
be a minimum of 10 outlet pipe diameters.
8. Do not install quick opening and closing valve on
the downstream side of PRV.
GP-2000 K1, K3 and K6 Startup and Adjustment Procedures
Note: Improper adjustment of the valve could cause hunting, water hammer or damage to the main parts of the
valve itself.
1. Open valve on drip leg to allow inverted bucket trap
to drain the condensate on the PRV inlet.
4. Open valve on the outlet of PRV and also on
control pipe.
2. Open the by-pass valve around PRV to blow the
system down. Care should be taken not to open
the valve completely so the safety valve does not
open. After adequate time to clean the system,
close the valve.
5. Open inlet valve to PRV - slowly.
6. Adjust air loading pressure until the desired outlet
pressure is achieved on the downstream pressure
gauge. Note: Steam demand must be present in
order to properly set the PRV.
3. Set air loading pressure to top of the PRV.
7. Adjust again after the entire system stabilizes.
Fig. 2-1
210
GP200
0K
3
195
180
GP-2
000 K
6
165
150
Steam Outlet PSIG
135
120
105
1
0K
0
-20
GP
90
75
60
45
30
15
0
15
30
45
60
75
90
105
120
135
150
Air Loading PSIG
Armstrong-Yoshitake, Inc.
221 Armstrong Blvd., P.O. Box 408, Three Rivers, Michigan 49093 - USA Ph: (269) 279-3600 Fax: (269) 273-8656
Bulletin No. AY-719-B
11/00
Steam Traps \ Humidifiers \ Steam Coils \ Valves \ Air Vents \ Pumping Traps \ Water Heaters
www.armstrong-intl.com
Printed in U.S.A.
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