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TYPICAL APPLICATIONS: Mobile Equipment, Gas Sampling, Compressors, Ball Valve Actuators, Cylinders, Dispensing, Laundry Equipment, Machine Tool Equipment
The SV241, SV242, and SV261
Series valves are 3-way, directacting,
and normally closed. The
SV241 and SV242 can be used for
liquids or gases, while the SV261
offers a quick-exhaust feature and is
limited to air use. The most common
application for these 3-way valves is
the control of single-acting cylinders
or spring-return actuators. The
pressure inlet port is blocked in the
de-energized position.
A 3-way normally closed valve has
3 ports labeled 1, 2, and 3. When
de-energized, no flow occurs from
port 1, but there is flow from port 2
to 3. When energized, flow occurs
from port 1 to 2, but no flow occurs from port 3. Usually,
3-way valves are used to
control larger pneumatically activated
valves. Port 1 is connected to the
pressure source, port 2 is connected to the
cylinder controlling the pneumatic
activation, and port 3 is the exhaust port
vented to the room.
The SV251 is a multipurpose 3-way valve
and can be used as normally open or normally closed. During
installation, for normally
closed select port 1 as supply
pressure. Port 2 is connected
to the pneumatic cylinder, and
port 3 is the exhaust port. To
configure as normally open,
select port 3 as supply
pressure. Port 2 is connected to
the pneumatic cylinder, and
port 1 is the exhaust port. The
SV251 can be used for liquids
or gases.
The SV271 is a 4-way, 5-ported
solenoid valve, rated for air
applications only. It is a 2-
position, pilot-operated valve
typically used to control doubleacting
cylinders or pneumatic
actuators. A 4-way valve has ports labeled 1, 2, 3, 4, and 5.
When de-energized, pressure is
supplied to port 1, which is open to
cylinder port 4 and closed to
cylinder port 2. Port 4 is closed to
exhaust port 3. When energized,
pressure port 1 is closed to cylinder
port 4 and open to cylinder port 2.
Cylinder port 2 is closed to exhaust port 3. Cylinder port 4 is open to
exhaust port 5.
SPECIFICATIONS Operation: SV241, SV242 and SV251: Direct acting
SV261, SV271: Pilot operated
Wetted Parts: Brass, Stainless steel, copper, and seal
SV241: Also Delrin®,
SV271: Aluminum, Delrin®, stainless
steel, copper and seal
Medium: Liquid or gases as specified in "To Order" chart
Max Static Pressure: 1.5 times max psid
Ambient Temp: -9 to 50°C (15 to 122°F)
Mounting: Pipe mounting, any direction
Power: 10 W, 120 Vac coils, 50 to 60 Hz
† All amounts shown in EUR, GBP, or USD
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