Servend SV200 Installation Manual
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DESCRIPTION
The OMEGA®SV100 and SV200 Series Solenoid Valves for liquids and gases
cover most industrial and laboratory applications. The valves are available in
sizes ranging from 1/4" to 2" NPT, with CV’s as high as 38. OMEGA also offers
general purpose 2, 3, and 4-way valves made of brass or stainless steel, and
specialty valves for hot water and steam applications.
WARNING: When using solenoid valves, the possibility of creating damaging
water hammers exists. Install proper surge suppressors on the line in front of
susceptible electronic pressure, flow, and pH equipment.
TWO-WAY VALVES
Two-way Normally Closed Valves
(121-128, 201-207, 221-225, 231-235, 281-287)
When the valve is de-energized, flow through the valve is prevented. When the
valve is energized, flow through the valve occurs.
Figure 1. Two-way Valves
Two-way Normally Open Valves
(131-133, 211-217, 291-295)
When the valve is de-energized, flow through the valve occurs. When the valve
energizes, flow through the valve is prevented.
Anti-Water Hammer Solenoid Valves (SV283-287, 291-295)
The closing time on these valves can be adjusted by a 4-position selector.
Position 1 allows fast closing, while 4 allows slowest closing setting. SV281 and
SV282 are anti-water hammer valves, but they do not have this adjustment for
varying the closing time. Normally Closed anti-water hammer valves SV283-287
are supplied with a manual override.
SV100 and SV200 SERIES
Solenoid Valves
INSTRUCTION
SHEET
M1103/0308
Shop online at: omega.com e-mail: info@omega.com
For latest product manuals: omegamanual.info
SV100 and SV200 Solenoid Valves
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THREE-WAY VALVES
Three-way Normally Closed Valves (SV241, 242, 261)
A three-way Normally Closed valve has three ports labeled 1, 2, and 3. When
de-energized, no flow occurs from Port 1, but there is flow from Port 2 to Port 3.
When energized, flow occurs from Port 1 to 2, but no flow occurs from Port 3.
Normally three-way valves are used to control larger pneumatically-activated
valves. When controlling pneumatic-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. Refer to Figure 2.
Multi-Purpose Three-Way Valve (SV251)
The SV251 has the same flow paths as above, except supply pressure can be
connected to any of the ports to set a variety of functions. When the valve is
being used to control a pneumatically-activated cylinder, it can serve as a
Normally Open or a Normally Closed valve by selecting the proper ports. To
configure it as a Normally Closed three-way valve, Port 1 is supply pressure,
Port 2 is connected to pneumatic cylinder, and Port 3 is exhaust port. To
configure as a Normally Open, three-way valve, Port 3 is pressure supply, Port 2
is connected to the pneumatic cylinder, Port 1 is exhaust port. Refer to Figure 2.
Normally Closed Multi-purpose
Figure 2. Three-way Valves
FOUR-WAY VALVE (SV271)
The SV271 is a four-way directional control valve. A four-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 5. When energized, pressure Port 1 is closed to cylinder Port 4, and
is open to cylinder Port 2. Cylinder Port 2 is closed to exhaust Port 3. Cylinder
Port 4 is open to exhaust Port 5. Refer to Figure 3.
The SV271 can be used as a three-way Normally Closed valve by plugging Port
4, or as a Normally Open valve by plugging Port 2, keeping Port 1 as supply
pressure, and Ports 3 and 5 open as exhaust ports. Refer to Figure 3.
Figure 3. Four-way Valve
Note: Quick Exhaust Valve SV261 and four-way valve SV271 have sleeve pilot
exhaust ports which cannot be blocked.
PRESSURE REQUIREMENTS
Actual line pressures must be below maximum line pressures listed on valve
label. No minimum pressure is required except for the following valves:
128, 203-207, 211-217, 283-287, 291-295: 5 PSID
SV271: 15 PSID
SV281-282: 3 PSID
SV261: 2 PSID
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