Norgren Prospector Series Datasheets - Manual (Page 4)

VAL-12-4 Littleton, CO USA Phone: 303-794-2611 www.norgren.com
Prospector Series Poppet Valves
2-Port/2-Position
These 2-way valves have an inlet and outlet port and are used as
shutoff valves that open or close an air line. They are available in
normally closed or normally open models. The normally closed
model blocks flow when in its normal position, and permits flow when
it is actuated. The normally open model permits flow when in its
normal position, and blocks flow when actuated. Typical applications
include on-off control of main plant air, air to branch lines, systems
and air motors.
Flow Diagrams
3-Port/2-Position
These 3-way valves have an inlet, outlet, and exhaust port and are
typically used to pressurize and then exhaust air from such devices
as single-acting cylinders. They are available in normally closed or
normally open models. The normally closed model exhausts air
from the device when in its normal position, and pressurizes the
device when actuated. The normally open model pressurizes the
device when in its normal position and exhausts air from the device
when actuated.
The normally closed valve is available with two options: a position
indicator pin and an air or solenoid momentary signal operator.
The indicator pin can be used to operate a switch or other device to
provide a signal for a control circuit. The momentary signal
operator is used when it is desirable to control the valve with two
alternately applied momentary signals (first signal shifts and holds the
poppet; the second allows the poppet to return to its normal position).
Flow Diagrams
NORMAL ACTUATED
Normally
Closed
Normally
Open
Normally
Closed
Normally
Open
NORMAL ACTUATED
Inlet Blocked Pressure to OUT Port
3-Port/2-Position (Multi-
Directional)
These 3-way valves can be used in four
different ways — as a distributor, directing air
first to one port, then to another; as a selector,
directing first high, then low pressure air (or
vacuum) to the same outlet; as a standard 3-
port/2-position normally closed valve; and as a
standard 3-port/2-position normally open *
valve. Multi-directional valves are the only poppet
valves with which speed controls can be installed
in the exhaust port.
Flow Diagrams
NORMAL ACTUATED
Distributor
Selector
(Two
Pressure)
Normally
Closed
Normally
Open *
* Normally open valves require an
external pilot supply.
Pressure to OUT Port Inlet Blocked
Pressure to Port A Inlet Blocked
Inlet Blocked Pressure to Port A
Pressure C to Port A Pressure B to Port A
Pressure to Port C Pressure to Port B
Inlet Blocked Pressure to Port B
Pressure to Port B Inlet Blocked
A
(IN)
B
(OUT)
A
(IN)
B
(OUT)
A
(IN)
B
(OUT)
A
(IN)
B
(OUT)
IN
OUT
EXH
IN
OUT
EXH
IN
OUT
EXH
IN
OUT
EXH
A
(IN)
B
(OUT)
C (OUT 1)
A
(IN)
B
(OUT 2)
C (OUT 1)
B
(IN 2)
A
(OUT)
C (IN 1)
B
(IN 2)
A
(OUT)
C (IN 1)
B
(IN)
A
(OUT)
C (EXH)
B
(IN)
A
(OUT)
C (EXH)
B
(EXH)
A
(OUT)
C (IN)
B
(EXH)
A
(OUT)
C (IN)