Norgren Prospector Series Datasheets - Manual (Page 51)

Prospector Series Poppet Valves
Littleton, CO USA Phone: 303-794-2611 www.norgren.com VAL-12-51
Pilot Air Supply
The pilot air supply to the time delay
must be filtered and regulated as
described under Medium. For best
timer performance, the installation
shown in Figure 2 is recommended.
Connect the external pilot supply to the operator.
The time delay will also be supplied from this connection.
Figure 2. External Pilot Supply
Figure 1. Internal Pilot Supply
Regulator
5-Micron
Filter
Operator
Timer
Main
Valve
Other
Source
5-Micron
Filter
Operator
Timer
Main
Valve
Regulator Lubricator
0 to 5 Second Time Delays, & 0 to 60 Second Time Delays - Standard Applications Cont.
Graphic Symbols and Timing Sequences
SIG — Pilot Signal
IPS
— Internal Pilot Supply
EPS — External Pilot Supply (Shown Plugged)
EXH — Exhaust
MV
— Main Valve (Piston)
ACT — Actuated
REL — Released (Deactuated)
IN PR — Inlet Pressure (Main Valve)
— Port/Passage Plugged
— Passage Blocked
IPS MV
SIG
ON
OFF
ACT
REL
MV
SIG
(0 to 5 Seconds)
TDR
1. No pilot signal - main valve released.
2. Pilot signal applied - main valve actuates
after the time delay period (TDO) is
completed and remains actuated so long
as the pilot signal is sustained.
3. Pilot signal removed - main valve released
immediately.
1. No pilot signal - main valve released.
2. Pilot signal applied - main valve actuates
immediately and remains actuated so
long as the pilot signal is sustained.
3. Pilot signal removed - main valve releases
after the time delay period (TDR) is
completed.
Model 01 - Time Delay on Operate (TDO) Model 02 - Time Delay on Release (TDR)
1. No pilot signal - main valve released.
2. Pilot signal applied - main valve actuates
after the time delay period (TDO) is
completed and remains actuated so long
as the pilot signal is sustained.
3. Pilot signal removed - main valve released
immediately.
Model 03 - Time Delay on Operate (TDO)
Normally Closed
EXH
EPS
IPS MV
SIG
ON
OFF
ACT
REL
MV
SIG
(0 to 60
Seconds)
TDO
IPS MV
SIG
ON
ACT
REL
MV
SIG
(0 to 5 Seconds)
TDO
1. No pilot signal - main valve released.
2. Pilot signal applied - main valve actuates
immediately, then releases after the time
delay period (one shot) is completed and
remains released.
3. Pilot signal removed - main valve remains
released.
EXH
MV
SIG
ON
OFF
ACT
REL
MV
SIG
(0 to 60
Seconds)
ONE
SHOT
Model 23 One Shot, Normally Open
Standard Configuration
1. Main valve inlet pressurized - main valve
actuates immediately, then releases after
the time delay period (one shot) is
completed and remains released.
2. Main valve inlet pressure reduced to zero
psig - main valve remains released.
Model 23 One Shot, Normally Open
Alternate Configuration
EXH
MV
SIG
ON
OFF
ACT
REL
MV
SIG
(0 to 60
Seconds)
TDO
1. No pilot signal - main valve released.
2. Pilot signal applied - main valve actuates
immediately and remains actuated so long
as the pilot signal is sustained.
3. Pilot signal removed - main valve releases
after the time delay period (TDR) is
completed.
Model 04 - Time Delay on Release
(TDR) Normally Closed
EXH
EPS
IPS MV
SIG
ON
OFF
ACT
REL
MV
SIG
(0 to 60
Seconds)
TDR
Internal pilot supply Shut off air supply to main valve. Cycle valve operator until trapped air is exhausted from the main valve piston chamber, operator, and time delay.
You may also install a 2-way vent valve on the external pilot supply port.
External pilot supply Shut off air supply to main valve and the pilot supply. Cycle the valve operator until the trapped air is exhausted. You may also install a 2-way
vent valve on external pilot supply line.