Omega Products SV121 User Manual
2-WAY GENERAL PURPOSE
SOLENOID VALVES
SV121 shown close to
actual size.
SV120 Series
U Stainless Steel Valve
Body Resists Corrosion
U Rugged NEMA 4 (IP65) Housing
U Mounts in Any Position
U Rated for Continuous Duty
U High-Pressure Models
TYPICAL APPLICATIONS
U Automation
U Humidifiers
U Water Treatment
U Dispensing
U Laundry, Dry Cleaning Equipment
U Machine Tools
U Vending Machines
The direct-acting SV121 to SV127 solenoid valves
consist of a coil, plunger, and sleeve assembly.
In a normally closed state, a plunger return spring
holds the plunger against the orifice, preventing
flow through the valve. When current flows through
the coil, a magnetic field is produced and it turns
the stop into an electromagnet that attracts the
magnetic plunger. This action compresses the
return spring, allows the body orifice to open, and
permits fluid flow through the valve. The pressure
and flow capabilities of the direct-acting valves are
limited by the power of the solenoid.
The SV128 is a pilot-operated solenoid valve.
It uses the energy stored in the pressurized fluid
to actuate the valving mechanism. The valves
require the minimum pressure differential specified
for proper valve operation. A direct-acting solenoid
valve is an integral part of the pilot-operated valve
and is used to affect the balance of pressure above
and below a diaphragm or piston.
VALVES AND REGULATORS
L
SV126 shown close
to actual size.
L-26
DIRECT-ACTING OR PILOT-OPERATED
SOLENOID VALVES, NORMALLY CLOSED,
STAINLESS STEEL VALVE BODY
Note: 5 to 11 psi is the operating pressure
range for bubble-tight sealing. Valves may
leak if the pressure differential falls below
5 psi.
SPECIFICATIONS
Operation:
SV121 to SV127: Direct acting
SV128: Pilot operated
Wetted Parts: Stainless steel,
copper and seal
Medium: Liquid or gases
Max Static Pressure: 1.5 times max
psid, vacuum (>5 microns ABS)
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
Weight: 500 g (1.1 lb)
41.1
(1.62)
2
41.1
(1.62)
DIA.
OUT
Port Identification: 2-IN/1-OUT
To Order
(0.34)
IN
Visit omega.com/sv120_series for Pricing and Details
SV121 to SV127
8.6
Dimensions: mm (inch)
37.6 (1.48)
# 10-32 NF TH’D
x 0.25 DP - 2 PLCs
(2.76)
49.5
(1.95)
2
11.2
(0.44)
70.1
22.4
(0.88)
(2.84)
I
72.1
(0.44)
11.2
NPT
MODEL NO. FITTING ORIFICE C
SV121
SV122
SV123
SV124
SV125
SV126
SV127
SV128
Comes complete with operator’s manual.
*
1
⁄
4
1
⁄
4
1
⁄
4
1
⁄
4
1
⁄
4
1
⁄
4
1
⁄
4
1
⁄
4
3
" 0.06 KEL-F 0 1000 74 165 4 to 15 ms 4 to 15 ms
⁄
64
3
" 0.06 FKM 0 450 116 240 4 to 15 ms 4 to 15 ms
⁄
64
1
" 0.10 FKM 0 350 116 240 4 to 15 ms 4 to 15 ms
⁄
16
3
" 0.18 FKM 0 275 116 240 4 to 15 ms 4 to 15 ms
⁄
32
1
" 0.28 FKM 0 200 116 240 4 to 15 ms 4 to 15 ms
⁄
8
5
" 0.40 FKM 0 90 116 240 4 to 15 ms 4 to 15 ms
⁄
32
1
" 0.75 FKM 0 40 116 240 4 to 15 ms 4 to 15 ms
⁄
4
1
" 0.76 PTFE 5 1500 99 210 30 to 60 ms 30 to 60 ms
⁄
4
SEAL
V
MIN MAX °C °F OPEN CLOSE
22.4
(0.88)
DIFF
PRESSURE
(psid)
SV128
41.1
(1.62)
47.8
(1.88)
29.2 (1.15)
41.1
(1.62)
DIA.
Port Identification: 2-IN/1-OUT
IN
OUT
Dimensions: mm (inch)
TEMP RESPONSE TIME
3.3
(0.13)
(2.76)
49.5
(1.95)
I
70.1
73.7
(2.90)
2
106.7
(4.20)
ACCESSORIES
MODEL NO. DESCRIPTION
SVCOIL-110AC Replacement coil, 110 Vac
SVCOIL-220AC Replacement coil, 220 Vac
SVCOIL-24VDC Replacement coil, 24 Vdc
Pilot operated.
*
Note: Some solenoid valves are available with 24 Vdc coils. Five piece minimum order. UL approval is not available with 24 Vdc coils.
Specifications effected; pressure ratings may decrease; coil wattage ratings may increase. Consult Engineering.
Ordering Examples: SV121, direct-acting stainless steel normally closed valve with
SV128, pilot operated stainless steel normally closed valve with
1
orifice and PTFE seal.
⁄
4
3
orifice and KEL-F seal.
⁄
64
L-27
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