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STC's high performance direct acting, direct-lift diaphragm, and pilot operated piston solenoid valves offer reliability, compact and rugged designs,
high-speed response, long life cycle, DIN connections, and simple installation, maintenance, and control.


Specifications and Operation of Brass and Stainless Steel Solenoid Valves

 

 

 

 

 

 

 

 

 

 

Valve Model

2HS012-032

2H120-150

2HO120-150

 

2L

2LS

 

2MS

2MSO

2P025

2P035

Valve Type
Normally Closed (NC)
Normally Open (NO)

2 Way

2 Way

2 Way

 

2 Way

2 Way

 

2 Way

2 Way

2 Way

3 Way

NC

NC

NO

 

NC

NC

 

NC

NO

NC

NC

Direct
Acting

Pilot
Diaphragm

Pilot
Diaphragm

 

Direct Lift
Piston

Direct Lift
Piston

 

Pilot
Piston

Pilot
Piston

Direct
Acting

Direct
Acting

Operating Pressure (PSI)

0 to 1000

5 to 1000

5 to 725

 

0 to 210

0 to 150

 

7 to 230

7 to 230

0 to115

0 to150

Operating Temperature (C)

0 to 85C 

-10 to 150C 

-10 to 150C 

 

-20 to 180C 

-20 to 180C 

 

-20 to 180C

-20 to 180C

-5 to 80C

-5 to 80C 

Port Size (NPT)

1/8

3/8 to 1/2

3/8 to 1/2

 

3/8 to 2

3/8 to 2

 

3/8 to 2

3/8 to 2

1/8 to 1/4

1/8 to 1/4

Body Materials

Stainless
Steel

Brass

Brass

 

Brass

Stainless
Steel

 

Stainless
Steel

Stainless
Steel

Engineered Plastic

Engineered Plastic

Seal Materials

NBR (Options: EPDM, Viton)

Teflon

Viton

Viton

 

PTFE

PTFE

 

PTFE

PTFE

NBR

NBR

Coil Protection Insulation Class

H Class IP65 

H Class IP65 

H Class IP65 

 

H Class IP65 

H Class IP65 

 

H Class IP65 

H Class IP65 

B Class IP65 

B Class IP65 

Coil Duty

100% ED

100% ED

100% ED

 

100% ED

100% ED

 

100% ED

100% ED

100% ED

100% ED

Coil Power

14W

9 W, 17VA

9 W, 17VA

 

35W

15 W, 22VA

 

15 W, 22VA

15 W, 22VA

6.5W

6.5W

Electrical Connections

Conduit

DIN

DIN

 

DIN

DIN

 

DIN

DIN

DIN

DIN

Service

Air, Gas, Liquid

 

Air, Liquid, Steam

 

Air, Liquid, Steam 

Air, Liquid, Vacuum

 

 

 

Valve Model

2S025-040

2S160-500

2SO160-500

2T

2V025

2V130-250

2W025-040

2W160-500

2WO160-500

3S035

Valve Type
Normally Closed (NC)
Normally Open (NO)

2 Way

2 Way

2 Way

2 Way

2 Way

2 Way

2 Way

2 Way

2 Way

3 Way

3 Way

NC

NC

NO

NC

NC

NC

NC

NC

NO

NC

NC

Direct
Acting

Direct Lift Diaphragm

Direct Lift
Diaphragm

Direct Lift
Diaphragm

Direct
Acting

Pilot
Diaphragm

Direct
Acting

Direct Lift
Diaphragm

Direct Lift
Diaphragm

Direct
Acting

Direct
Acting

Operating Pressure (PSI)

0 to150

0 to150

0 to150

0 to 22

0 to 115

4 to 115

0 to 150

0 to 150

0 to 150

0  to 150

0 to 150

Operating Temperature (C)

-5 to 80C 

-5 to 80C

-5 to 80C

-20 to 80C

-5 to 80C

-5 to 80C

-10 to 80C

-10 to 80C

-10 to 80C

-10 to 120C 

-10 to 80C

Port Size (NPT)

1/4 to 3/8

3/8 to 2

3/8 to 2

1/4 to 1/2

1/8 to 1/4

3/8 to 1

1/4 to 3/8

3/8 to 2

3/8 to 2

1/8 to 1/4

1/8 to 1/4

Body Materials

Stainless
Steel

Stainless
Steel

Stainless
Steel

Teflon

Aluminum

Brass

Brass

Brass

Brass

Stainless

Steel

Brass

Seal Materials: NBR
(Options: EPDM, Viton)

NBR

NBR

NBR

Teflon

NBR

NBR

NBR

NBR

NBR

Viton

NBR

Coil Protection Insulation Class

H Class IP65 

H Class IP65 

H Class IP65 

H Class IP65 

B Class IP65 

B Class IP65 

H Class IP65 

H Class IP65 

H Class IP65 

H Class IP65 

H Class IP65 

Coil Duty

100% ED

100% ED

100% ED

100% ED

100% ED

100% ED

100% ED

100% ED

100% ED

100% ED

100% ED

Coil Power

14-20W

20-35W

30W

20W

6.5W

6.5W

14 to 20W

20-35W

30W

14W

14W

Electrical Connections

DIN

DIN

DIN

DIN

DIN

DIN

DIN

DIN

DIN

DIN

DIN

Service

Air, Gas, Liquid, Vacuum 

Gas, Liquid 

 Air, Gas, Liquid, Vacuum

 

 

 

NORMALLY CLOSED valves OPEN when the coil is energized.
NORMALLY OPEN valves CLOSE when the coil is energized.
The PILOT VALVE is normally open on piston pilot operated solenoid valves. The PISTON opens only with application of PRESSURE.


Seal Options: NBR: -5C to 80C, EPDM: -20C to 120C, VITON: -10C to 150C, PTFE:  -10C to 180C.

ALL Standard valves are supplied with CONTINUOUS DUTY COILS of the proper class of insulation for the service indicated on the valve. The coil temperature may become hot after being energized for extended periods, but it is normal. Smoke or burning odor indicates excessive coil temperature and should disconnect the power to the coil immediately. 

VOLTAGES: Standard: 12-24V DC and 24-110-220-230V/50-60 Hz AC. Voltage tolerances: +10% 5% for DC, +10%-15% for AC; .

SERVICE LIFE: The service life of the solenoid valve depends on the operating conditions such as pressure, temperature, type of medium and the voltage. Normally the STC solenoid valves are reliable for more than 1 million cycles.

 

2P025, 2V025, 2S025-040, 2W025-040 are DIRECT ACTING solenoid valves and do not require a minimum operating differential pressure. When the coil is energized, it lifts the solenoid plunger, which is mechanically connected to the valve seat and lifts it to open the main valve orifice. When the coil is de-energized, spring force and media flow return the valve seat to close the main valve orifice.

 

UNIT=MM

 

 

2/2 Direct Acting Normally Open (2P035, 2V035, 2SO025-040, 2WO025-040 Series)

To close: when the valve is energized, it attracts the plunger. Then the plunger covers the main orifice which stops media flow through the valve.
To open: when the valve is de-energized, it releases its hold on the plunger. Then the plunger uncovers the main orifice which allows the flow through the valve.
.
  


2/3 Direct Acting Solenoid Valve Normally Closed (3S035 Series)

As shown in the diagram below, when the valve is de-energized (left diagram), the plunger under the force of spring seals the main orifice, which makes CYL connect with EX. When the valve is energized (right diagram), the coil magnetic force pulls back the plunger and closes EX connection, now  IN opens to CYL.

 

 

 

2W series 2/2 Direct Lift Diaphragm Normally Closed Solenoid Valve: 

To open: when the valve receives an electrical signal, a magnetic field is formed which attracts the plunger covering the main orifice to lift off, causing system pressure to drop. As system pressure on the top of the diaphragm is reduced, full system pressure on the other side of the diaphragm acts to lift the diaphragm away from the main orifice, which allows media to flow through the valve. Since the bleed orifice is dimensionally smaller than the pilot orifice, the system pressure cannot rebuild on the top of the diaphragm as long as the pilot orifice remains open. When the system pressure is 0 PSI, the valve also can be operated.
To close: when the valve is de-energized, it releases its hold on the plunger. Then the plunger forced by the spring drops and covers the main orifice. The system pressure builds up on the top of the diaphragm through the bleed orifice, forcing the diaphragm down until it covers the main orifice and stops media flow through the valve. When the system pressure is 0 PSI, the valve still can be operated.

 
    

 

MODEL: 2S160-500 & 2W160-500 Series SOLENOID VALVE DIMENSIONS  (MM)

BRASS

STAINLESS STEEL

Port (NPT)

Cv

A

B

C

D

E

F

W (lb)

2W160-10

2S160-10

3/8"

4.8

101.5

57

117

69

36

56

1.6

2W160-15

2S160-15

1/2"

4.8

101.5

57

117

69

36

56

1.8

2W200-20

2S200-20

3/4"

7.6

107.0

57

124

73

36

56

1.8

2W250-25

2S250-25

1"

12

111.5

74

135

99

36

56

3.2

2W350-35

2S350-35

1 1/4"

24

142.0

95

172

123

63.5

66.5

5.7

2W400-40

2S400-40

1 1/2"

29

142.0

95

172

123

63.5

66.5

5.7

2W500-50

2S500-50

2"

48

172.0

123

209

168

63.5

66.5

9.9


Brass Valve                              Stainless Steel Valve

 

2W Series 2/2 Direct Lift Diaphragm Normally Open Solenoid Valve: 

To close: when the valve is energized, it attracts the plunger. Then the plunger covers the main orifice. The system pressure builds up on the top of the diaphragm/piston through the bleed orifice, forcing the diaphragm/piston down until it covers the main orifice and stops media flow through the valve. When the system pressure is 0 PSI, the valve also can be operated.
To open: when the valve is de-energized, it releases its hold on the plunger. The plunger uncovers the pilot orifice causing system pressure holding the diaphragm/piston closed to drop. As system pressure on the top of the diaphragm/piston is reduced, full system pressure on the opposite side of the diaphragm/piston acts to lift the diaphragm/piston away from the main orifice, which allows the full media flow through the valve. When the system pressure is 0 PSI, the valve also can be operated.


Brass or Stainless Steel Body
Normally open
Temperature: -10 to 80 Deg, C
Pressure: Vacuum to150PSI

MODEL
Stainless Steel

MODEL
Brass

PORT NPT

L (MM)

H (MM)

Cv

2SO160-1/4

2WO160-1/4

1/4"

40.5

75

 

2SO160-3/8

2WO160-3/8

3/8"

69

117

4.8

2SO160-1/2

2WO160-1/2

1/2"

69

117

4.8

2SO200-3/4

2WO200-3/4

3/4"

73

123.5

7.6

2SO250-1

2WO250-1

1"

99

134.5

12

2SO350-1 1/4

2WO350-1 1/4

1 1/4"

123

195

24

2SO400-1 1/2

2WO400-1 1/2

1 1/2"

123

195

29

2SO400-2

2WO500-2

2"

168

227

48

2L Series 2/2 Direct Lift Piston Normally Closed Solenoid Valve: 
Description & Operation:
2L, 2LS series valves are 2 way  normally closed, internal DIRECT LIFT PISTON solenoid valves and require ZERO OPERATING PRESSURE DIFFERENTIAL. When the coil is energized, it lifts the pilot valve off the pilot valve seat, opening the pilot orifice through the center of the piston to the outlet side of the valve. This relieves the pressure from the top of the piston ring and pressure under the piston ring forces the piston up to open the main valve orifice. When the coil is de-energized, the pilot valve returns to close the pilot orifice and pressure across the piston ring is equalized through a timing orifice in the side of the piston or in the valve body. The piston spring returns the piston to close the main valve orifice.


Temperature: -15 to 120 Deg, C
Pressure: 0 to 210PSI
Installation: Vertical
Material Options:
Brass
Stainless Steel

  

MODEL: 2L Series (UNIT=MM) 

PORT CENTER LINE
TO TOP

WIDTH

HEIGHT

LENGTH

K Port (NPT)

2L170-10

125   

42

146

82

 3/8

2L170-15

125   

42

146

82

 1/2

2L170-20

125   

42

146

82

 3/4

2L200-25

136   

52

162

91

1   

2L300-35

148   

74

185

111

1 1/4

2L300-40

148   

74

185

111

1 1/2

2L500-50

176   

86

223

163

2   

 

2V130 Series 2/2 Pilot Operated Diaphragm Solenoid Valve NC
To open: when the valve receives an electrical signal, a magnetic field is formed which attracts the plunger covering the pilot orifice to lift off, causing system pressure (holding the diaphragm/piston closed) to drop. As system pressure on the top of the diaphragm/piston is reduced, full system pressure on the other side of the diaphragm/piston acts to lift the diaphragm/piston away from the main orifice, which allows media flow through the valve. Since the bleed orifice is dimensionally smaller than the pilot orifice, the system pressure can t rebuild on the top of the diaphragm/piston as long as the pilot orifice remains open.


To close: when the valve is de-energized, it releases its hold on the plunger. Then the plunger drops and covers the main orifice. The system pressure builds up on the top of the diaphragm/piston through the bleed orifice, forcing the diaphragm/piston down until it covers the main orifice and stops media flow through the valve



2V130 Series 2/2 Pilot Operated Diaphragm Solenoid Valve NO

To close: when the valve is energized, it attracts the plunger. Then the plunger covers the pilot orifice. The system pressure builds up on the top of the diaphragm/piston through the bleed orifice, forcing the diaphragm/piston down until it covers the main orifice and stops media flow through the valve.


To open: when the valve is de-energized, it releases its hold on the plunger. The plunger uncovers the pilot orifice causing system pressure holding the diaphragm/piston closed to drop. As system pressure on the top of the diaphragm/piston is reduced, full system pressure on the opposite side of the diaphragm/piston acts to lift the diaphragm/piston away from the main orifice, which allows the full media flow through the valve.

 

2H1 Series High Pressure 2 Way Pilot Operated Diaphragm NC Solenoid Valve, 5 to 1000 PSI

2H2 Series High Pressure 2 Way Pilot Operated Diaphragm NO Solenoid Valve, 5 TO 725 psi

 


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Sizto Tech Corporation 892 Commercial Street, Palo Alto, CA 94303 USA
To order or locate a stocking distributor in your area, call 650-856 8833, Fax to 650- 856
8811,
Toll Free: 866-9620170, or email Sales@StcValve.com   
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Information contained herein may be changed without prior notification