Solenoid Valves & Air-Pilot Activated Valves  Download Catalog
STC's high performance solenoid and air-pilot activated valves offer reliability, high-flow rates, compact and rugged designs, low power consumption, high-speed response, long life cycle, DIN connections with built-in surge suppression, and indicator lights. Manifold options, including built-in push-in fittings, pre-wired electric connections, and simple installation, maintenance, and control.

                          STC  Solenoid Air Valves Selection Guide (click picture to get detail)
Directing Acting
2 & 3 Way Valves
3 Way
Solenoid Valves
3 Way
Double Solenoid Valves
4 Way
Solenoid Valves
4 Way
Double Solenoid Valves
3 Position 4 Way
Solenoid Valves
Directing Acting 2 & 3 Way Valves Manifold Valves Stacking Valves Air Piloted Valves Solenoid Coils Namur Valves
   
 STC Process Valves Selection Guide (click picture to get detail)
General Purpose NC/NO
Zero Differential Solenoid Valves
 High Pressure & Temperature Valves Stainless Steel NC/NO
Zero Differential Solenoid Valves
Air Actuated Valves Needle Valves
 

Ordering Part No. =  Model No. - Voltage - Electrical Connection  

Model No

Unit Price

Valve Picture

Port Size
(NPT)

Voltage

Elec. Con.

Port #/Position/ Solenoid, Operating Temp/Pressure

Cv
Flow Rate

 

Resp.
Time

Power Rating

P=Inlet Port
A, B =Outlet
E, R, S=Exhaust

2P025 1/8

 $18.43

Shown with
Grommet Connection
PLASTIC SOLENOID VALVE

1/8 NPT

1 =12VDC
2 =24VDC

2A =24VAC
3 =110VAC
4 =220VAC
(50/60Hz)

G=Grommet

D= DIN
(with LED)

2/2/1
Direct Acting 
Normally closed 
Two Way Valve

14 -140 deg. F
Vacuum-115 PSI

Cv = 0.23
22 SCFM
@100 PSI

< 20 ms

 

3W for 40PSI

4.8W for 60PSI

6.5W  for 115 PSI

2P025 1/4

 $18.43

1/4 NPT

2V025 1/8
  

 $18.81

Shown with
DIN Connection

1/8 NPT

1 =12VDC
2 =24VDC

2A =24VAC
3 =110VAC
4 =220VAC
(50/60Hz)

G=Grommet

D= DIN
(with LED)

2/2/1
Direct Acting 
Normally closed 
Two Way Valve

14 -140 deg. F
Vacuum-115 PSI

Cv = 0.23
22 SCFM @100 PSI

< 20 ms

 

3W for 40PSI

4.8W for 60PSI

6.5W  for 115 PSI

2V025 1/4
  

 $18.81

1/4 NPT

2V035 1/8

 $18.81

1/8 NPT

1 =12VDC
2 =24VDC

2A =24VAC
3 =110VAC
4 =220VAC
(50/60Hz)

G=Grommet

D= DIN
(with LED)

3/2/1
Direct Acting 
Normally closed or open 
Three  Way Valve


14 -140 deg. F
Vacuum-115 PSI

Orifice:
1 MM

Cv = 0.05
5 SCFM @100 PS

< 20 ms

 

3W for 40PSI

4.8W for 60PSI

6.5W  for 115 PSI

2V035 1/4  

 $18.81

1/4 NPT

2V1 1/8

 $18.81

Shown with
DIN Connection

1/8 NPT

1 =12VDC
2 =24VDC

2A =24VAC
3 =110VAC
4 =220VAC
(50/60Hz)

 

G=Grommet

D= DIN
(with LED)

2/2/1
Direct Acting 
Normally closed 
Stacking 
Two Way Valve


14 -140 deg. F
Vacuum-115 PSI

Cv = 0.23
22 SCFM @100 PSI

< 20 ms

 

3W for 40PSI

4.8W for 60PSI

6.5W  for 115 PSI

3V1 1/8

 $18.81

1/8 NPT

3/2/1
Direct Acting 
Normally closed or open 
Stacking 
Three Way Valve
14 -140 deg. F
Vacuum-115 PSI

Orifice:
1 MM

Cv = 0.05
5 SCFM @100 PS


3V110-1/8

$24.26

DIN Connection

1/8 NPT

1 =12VDC
2 =24VDC

2A =24VAC
3 =110VAC
4 =220VAC
(50/60Hz)

G=Grommet

D= DIN
(with LED)

3/2/1
Three  Way Valve

Two Position
Single Solenoid

14 -140 deg. F

21-115 PSI

 Cv = .67
25 SCFM @100 PSI

< 20 ms

2.5W

3V210-1/4

$24.26

1/4 NPT

 Cv = 0.89
53 SCFM @100 PSI

3W/4.8W

3V310-3/8

$32.67

3/8 NPT

Cv = 1.68
80 SCFM @100 PSI

3V410-1/2

$56.93

1/2 NPT

Cv = 2.79
160 SCFM @100 PSI

 
3V120-1/8

$37.13

1/8 NPT

1 =12VDC
2 =24VDC

2A =24VAC
3 =110VAC
4 =220VAC
(50/60Hz)

G=Grommet

D= DIN
(with LED)

3/2/2
Three  Way Valve
Two Position
Double Solenoid

14 -140 deg. F

21-115 PSI

 0Cv = .67
25 SCFM @100 PSI

< 20 ms

2.5W

3V220-1/4

$37.13

1/4 NPT

 Cv = 0.89
53 SCFM @100 PSI

3W/4.8W

3V320-3/8

$45.54

3/8 NPT

Cv = 1.68
80 SCFM @100 PSI

3V420-1/2

$79.70

1/2 NPT

Cv = 2.79
160 SCFM @100 PSI


4V110-1/8
$25.25 Grommet Connection


DIN Connection

1/8 NPT

1 =12VDC
2 =24VDC

2A =24VAC
3 =110VAC
4 =220VAC
(50/60Hz)

G=Grommet

D= DIN
(with LED)

5/2/1
Four Way Valve


14 -140 deg. F

21-115 PSI

Cv = 0.67
25 SCFM @100 PSI

< 20 ms

2.5 W

4V210-1/4

$24.26

1/4 (inlet/outlet) 1/8 (Exhaust)

Cv =  0.89
53 SCFM @100 PSI

3W/4.8W
4V310-1/4

$32.67

1/4 (inlet/outlet) 1/4 (Exhaust)

Cv = 1.68
80 SCFM @100 PSI

4V310-3/8

$32.67

3/8 (inlet/outlet) 1/4 (Exhaust)

Cv = 1.68
80 SCFM @100 PSI

4V410-1/2

$56.93

1/2 NPT

Cv = 2.79
160 SCFM @100 PSI


4V120-1/8

$37.13

Grommet Connection


DIN Connection

 

1/8 NPT

1 =12VDC
2 =24VDC

2A =24VAC
3 =110VAC
4 =220VAC
(50/60Hz)

G=Grommet

D= DIN
(with LED)

5/2/2
Double Solenoid 
Four Way Valve


14 -140 deg. F

21-115 PSI

Cv = 0.67
25 SCFM @100 PSI

< 20 ms

2.5 W

4V220-1/4

$37.13

1/4 (inlet/outlet) 1/8 (Exhaust)

Cv = 0.89
53 SCFM @100 PSI

3W/4.8W

 

4V320-3/8

$45.54

3/8 (inlet/outlet) 1/4 (Exhaust)

Cv = 1.68
80 SCFM @100 PSI

4V420-1/2

$79.70

1/2 NPT

Cv = 2.79
160 SCFM @100 PSI


4V130C-1/8

$64.35

Grommet Connection

 DIN Connection

1/8 NPT

1 =12VDC
2 =24VDC

2A =24VAC
3 =110VAC
4 =220VAC
(50/60Hz)

G=Grommet

D= DIN
(with LED)

5/3/2
Double Solenoid 
Three Position, Closed Center
Four Way Valve

14 -140 deg. F

21-115 PSI

Cv =  0.67
25 SCFM @100 PSI

< 20 ms

2.5 W

4V230C-1/4

$64.35

1/4 (inlet/outlet) 1/8 (Exhaust)

Cv =  0.89
53 SCFM @100 PSI

3W/4.8W
4V330C-3/8

$88.61

3/8 (inlet/outlet) 1/4 (Exhaust)

Cv = 1.68
80 SCFM @100 PSI

4V430C-1/2

$113.85

1/2 NPT

Cv = 2.79
160 SCFM @100 PSI

4V130E-1/8 $64.35 Grommet Connection

 DIN Connection

1/8 NPT

1 =12VDC
2 =24VDC

2A =24VAC
3 =110VAC
4 =220VAC
(50/60Hz)

G=Grommet

D= DIN
(with LED)

5/3/2
Double Solenoid 
Three Position, Exhausted Center
Four Way Valve

14 -140 deg. F

21-115 PSI

Cv =  0.67
25 SCFM @100 PSI

< 20 ms

2.5 W

4V230E-1/4 $64.35

1/4 (inlet/outlet) 1/8 (Exhaust)

Cv =  0.89
53 SCFM @100 PSI

3W/4.8W
4V330E-3/8 $88.61

3/8 (inlet/outlet) 1/4 (Exhaust)

Cv = 1.68
80 SCFM @100 PSI

4V430E-1/2

$113.85

1/2 NPT

Cv = 2.79
160 SCFM @100 PSI

4V130P-1/8 $64.35 Grommet Connection

 DIN Connection

1/8 NPT

1 =12VDC
2 =24VDC

2A =24VAC
3 =110VAC
4 =220VAC
(50/60Hz)

G=Grommet

D= DIN
(with LED)

5/3/2
Double Solenoid 
Three Position, Pressure Center
Four Way Valve

14 -140 deg. F

21-115 PSI

Cv =  0.67
25 SCFM @100 PSI

< 20 ms

2.5 W

4V230P-1/4 $64.35

1/4 (inlet/outlet) 1/8 (Exhaust)

Cv =  0.89
53 SCFM @100 PSI

3W/4.8W
4V330P-3/8 $88.61

3/8 (inlet/outlet) 1/4 (Exhaust)

Cv = 1.68
80 SCFM @100 PSI

4V430P-1/2

$113.85

1/2 NPT

Cv = 2.79
160 SCFM @100 PSI


4V210B-1/4

$29.21

DIN Connection 1/4 (inlet)
 1/8 (Exhaust)

1 =12VDC
2 =24VDC

2A =24VAC
3 =110VAC
4 =220VAC
(50/60Hz)

G=Grommet

D= DIN
(with LED)

E=Explosion Proof Coil
($78.60/coil)

5/2/1
Actuator Mount 
Four Way Valve

14 -140 deg. F

21-115 PSI

Cv = 0.89
53 SCFM @100 PSI

< 20 ms 3W/4.8W

 

 

4V310B-1/4

$37.62

1/4 (inlet)
 1/4 (Exhaust)

Namur

Cv = 1.68
80 SCFM @100 PSI

4V310B-3/8

$37.62

3/8 (inlet)
 1/4 (Exhaust)

Namur

Cv = 1.68
80 SCFM @100 PSI

200C-1-E $85.50 Explosion Proof coil

1/2" NPT conduit

12VDC

 

http://preceptautomation.stage.thomasnet.com/asset/CSA+FM-2.jpg
Electrical Connections: 1/2" NPT conduit, with three, 18", 18 gauge Conductors
200C-2-E 24VDC
200C-2A-E 24VAC
200C-3-E 110VAC
(50/60Hz)
200C-4-E 220VAC
(50/60Hz)
             

Pilot Operated Air Valves: Body Ported Type

 

Part No.

Unit Price

Valve Picture

Port Size
(NPT)

Description

Port No/ Position

Cv
Flow Rate

Operating Pressure

P=Inlet Port
A, B =Outlet Port
E, R, S=Exhaust

3A110-1/8 $18.81

1/8 NPT

3 Way 2 position 
Single Pilot  
Air Valves

3/2
Three Way Valve

 Cv = 0.67
25 SCFM @100 PSI

Valve 0-115 PSI
Pilot 40 PSI

3A210-1/4 $18.81

1/4 NPT

Cv =  0.78
53 SCFM @100 PSI

3A310-3/8 $22.77

3/8 NPT

Cv = 1.68
80 SCFM @100 PSI

3A410-1/2 $37.62

1/2 NPT

Cv =  2.79
160 SCFM @100 PSI

3A120-1/8 $23.76

1/8 NPT

3 Way 2 position 
Double Pilot  
Air Valves

 

Cv = 0.67
25 SCFM @100 PSI

 

Valve 0-115 PSI
Pilot 40 PSI

 

 

3A220-1/4 $24.26

1/4 NPT

 

Cv =  0.78
53 SCFM @100 PSI

3A320-3/8 $28.71

3/8 NPT

 

Cv =  1.68
80 SCFM @100 PSI

3A420-1/2 $49.01

1/2 NPT

 

Cv = 2.79
160 SCFM @100 PSI

4A110-1/8 $18.81

1/8 NPT

4 Way 2 position 
Single Pilot  
Air Valves

5/2
Four Way Valve

Cv =  0.67
25 SCFM @100 PSI

Valve 0-115 PSI
Pilot 40 PSI

4A120-1/8 $23.76

1/8 NPT

4 Way 2 position 
Double Pilot  
Air Valves

5/2
Four Way Valve

Cv =  0.67
25 SCFM @100 PSI

Valve 0-115 PSI
Pilot 40 PSI

4A130C-1/8 $49.01

1/8 NPT

4 Way 3 position 
Closed Center
Double Pilot
Air Valves

5/3
Four Way
 Valve

Cv =  0.67
25 SCFM @100 PSI

Valve 0-115 PSI
Pilot 40 PSI

4A210-1/4 $18.81

1/4 (inlet/outlet) 1/8 (Exhaust)

4 Way 2 position 
Single Pilot  
Air Valves

5/2
Four Way Valve

Cv = 0.78
53 SCFM @100 PSI

Valve 0-115 PSI
Pilot 40 PSI

4A220-1/4 $24.26

1/4 (inlet/outlet) 1/8 (Exhaust)

4 Way 2 position 
Double Pilot  
Air Valves

5/2
Four Way Valve

Cv = 0.78
53 SCFM @100 PSI

Valve 0-115 PSI
Pilot 40 PSI

4A230C-1/4 $49.01

1/4 (inlet/outlet) 1/8 (Exhaust)

4 Way 3 position 
Closed Center
Double Pilot
Air Valves

5/3
Four Way Valve

 Cv = 0.78
53 SCFM @100 PSI

Valve 0-115 PSI
Pilot 40 PSI

4A310-3/8 $22.77

3/8 (inlet/outlet) 1/4 (Exhaust)

4 Way 2 position 
Single Pilot  
Air Valves

5/2
Four Way Valve

Cv = 1.68
80 SCFM @100 PSI

Valve 0-115 PSI
Pilot 40 PSI

4A320-3/8 $28.71

3/8 (inlet/outlet) 1/4 (Exhaust)

4 Way 2 position 
Double Pilot  
Air Valves

5/2
Four Way Valve

Cv = 1.68
80 SCFM @100 PSI

Valve 0-115 PSI
Pilot 40 PSI

4A330C-3/8 $71.78

3/8 (inlet/outlet) 1/4 (Exhaust)

4 Way 3 position 
Closed Center
Double Pilot
Air Valves

5/3
Four Way Valve

Cv = 1.68
80 SCFM @100 PSI

Valve 0-115 PSI
Pilot 40 PSI

4A410-1/2 $37.62

1/2 NPT

4 Way Single Pilot  
Air Valves

5/2
Four Way Valve

Cv = 2.79
160 SCFM @100 PSI

Valve 0-115 PSI
Pilot 40 PSI

4A420-1/2 $49.01

1/2 NPT

4 Way Double Pilot  
Air Valves

5/2
Four Way Valve

Cv = 2.79
160 SCFM @100 PSI

Valve 0-115 PSI
Pilot 40 PSI

4A430C-1/2 $85.36

1/2 NPT

4 Way 3 position 
Closed Center
Double Pilot
Air Valves

5/3
Four Way Valve

Cv = 2.79
160 SCFM @100 PSI

Valve 0-115 PSI
Pilot 40 PSI

Integrated Aluminum Base Mounted Manifolds
To Order
: Specify Part No + No. of stations 
(Price includes all mounting accessories-gasket and fasteners) 

 

3V-100M-2

$11.00/ 2 station

1/4" port
2 STATIONS

Integrated Base for Mounting 3V-100 & 3A-100 series Solenoid Valves
(Includes Mounting hardware and seal)

3V-100M-4

$22.00/ 4 station

1/4" port
4 STATIONS

3V-100M-6 $33.00/ 6 station

1/4" port
6 STATIONS

3V-100M-8 $44.00/ 8 station

1/4" port
8 STATIONS

3V-100M-16 $88.00/16 station

1/4" port
16 STATIONS

3V-100M-B $4.40/Plate

Blank Plate for 3-V100M MANIFOLD

3V-100M-H $4.40/Plate Blank Plate, Gasket & Mounting Screws Set for 3-V100M MANIFOLD
3V-200M-2

$11.00/ 2 station

1/4" port
2 STATIONS

Integrated Base for Mounting 3V-200 & 3A-200 series Solenoid Valves
(Includes Mounting hardware and seal)

3V-200M-4

$22.00/ 4 station

1/4" port
4 STATIONS

3V-200M-6 $33.00/ 6 station

1/4" port
6 STATIONS

3V-200M-8 $44.00/ 8 station

1/4" port
8 STATIONS

3V-200M-16 $88.00/16 station

1/4" port
16 STATIONS

3V-200M-B $4.84/Plate

Blank Plate for 3-V200M MANIFOLD

3V-300M-2

$16.50/ 2 station

3/8" port
2 STATIONS

Integrated Base for Mounting 3V-200 & 3A-200 series Solenoid Valves
(Includes Mounting hardware and seal)

3V-300M-4

$33.00/ 4 station

3/8" port
4 STATIONS

3V-300M-6 $49.50/ 6 station

3/8" port
6 STATIONS

3V-300M-8 $66.00/ 8 station

3/8" port
8 STATIONS

3V-300M-16 $132.00/ 16 station

3/8" port
16 STATIONS

3V-200M-B $4.84/Plate

Blank Plate for 3-V200M MANIFOLD

3V-400M-2

$27.50/ 2 station

1/2" port
2 STATIONS

Integrated Base for Mounting 3V-200 & 3A-200 series Solenoid Valves
(Includes Mounting hardware and seal)

3V-400M-4

$55.00/ 4 station

1/2" port
4 STATIONS

3V-400M-6 $82.50/ 6 station

1/2" port
6 STATIONS

3V-400M-8 $110.00/ 8 station

1/2" port
8 STATIONS

   

 

3V-200M-B $4.84/Plate

Blank Plate for 3-V200M MANIFOLD

4V-100M-2

$11.00/ 2 station

1/4" port
2 STATIONS

Integrated Base for Mounting 4V-100 & 4A-100 series Solenoid Valves
(Includes Mounting hardware and seal)

4V-100M-4

$22.00/ 4 station

1/4" port
4 STATIONS

4V-100M-6 $33.00/ 6 station

1/4" port
6 STATIONS

4V-100M-8 $44.00/ 8 station

1/4" port
8 STATIONS

4V-100M-16 $88.00/16 station

1/4" port
16 STATIONS

4V-100M-B $4.84/Plate

Blank Plate for 4-V100M MANIFOLD

4V-200M-2

$11.00/ 2 station

" port
2 STATIONS

Integrated Base for Mounting 4V-200 & 4A-200 series Solenoid Valves
(Includes Mounting hardware and seal)

4V-200M-4

$22.00/ 2 station

1/4" port
4 STATIONS

4V-200M-6

$33.00/ 6 station

1/4" port
6 STATIONS

4V-200M-8

$44.00/ 8 station

1/4" port
8 STATIONS

4V-200M-16

$88.00/ 16 station

1/4" port
16 STATIONS

4V-200M-B $4.48/Plate

Blank Plate for 4V-200M MANIFOLD

4V-300M-2

$16.50/ 2 station

3/8" port
2 STATIONS

Integrated Base for Mounting 4V-300 & 4A-300series Solenoid Valves
(Includes Mounting hardware and seal)

4V-300M-4 $33.00/ 4 station

3/8" port
4 STATIONS

4V-300M-6

$49.50/ 6 station

3/8" port
6 STATIONS

4V-300M-8 $66.00/ 8 station

3/8" port
8 STATIONS

4V-300M-16 $132.00/ 16 station

3/8" port
16 STATIONS

4V-300M-B $4.84/Plate

Blank Plate for 4V-300M MANIFOLD

4V-400M-2

$27.50/ 2 station

1/2" port 
2 STATIONS

Integrated Base for Mounting 4V-400 & 4A-400series Solenoid Valves
(Includes Mounting hardware and seal)

4V-400M-4 $55.00/4 station

1/2" port
4STATIONS

4V-400M-6

$82.50/ 6 station

1/2" port 
6 STATIONS

4V-400M-8

$110/8 station

1/2" port
8 STATIONS

4V-400M-B $4.84/Plate

Blank Plate for 4V-400M MANIFOLD

Solenoid Coil
Part No. List Price Picture

Voltage

Electrical Connection

Power Rating

APPLICATIONS

Electrical Connections

100C  $7.13 1=12VDC
2=24VDC

2A=24VAC
3=110VAC
4=220VAC
(50/60Hz)

D= DIN  (with LED indicator and conduit connector)

2.5 W

For 100 Series Solenoid Valves

To connect DIN coil:
1. Remove the Philip screw from the plastic housing and unplug it from the DIN coil.
2. From the screw opening, use the screw to push the terminal block out of the plastic housing.
3. Note the 1, 2 and ground markings on underside of DIN enclosure.
4. For DC DIN Coil, Connect 1 to Positive, 2 to Negative.
5. For AC DIN Coil, connect 1 to HOT wire, 2 to Neutral wire, and if required connect ground to ground wire.

To connect Grommet coil:
1.  For DC Coil, connect one of the two wires to Positive, and the other wire to Negative.
2. For AC Coil, connect one of the two wires to HOT wire, and the other wire to neutral wire.

100C  $7.13

G=Grommet

2.5 W

200C  $7.13 1=12VDC
2=24VDC

2A=24VAC
3=110VAC
4=220VAC
(50/60Hz)

D= DIN  (with LED indicator and conduit connector)

3 W
4.8W

6.5W

For 200-400 Series Solenoid Valves

200C  $7.13

 

3 W
4.8W

6.5W

200C $85.50 Explosion Proof Option 1E=12VDC
2E=24VDC

2AE=24VAC
3E=110VAC
4E=220VAC
(50/60Hz)

Explosion Proof Coil Option
All  voltages with 1/2" NPT conduit connection
FM Approved
CL. I; ZONE 1,
CL. I; DIV.1; GR. A, B, C, D
CL. II; GR. E, F, G
CL. III
T4 Ta= -20ºC...+60ºC

For 200-400 Series Solenoid Valves http://preceptautomation.stage.thomasnet.com/asset/CSA+FM-2.jpg
2W200C $23.10 D= DIN  (with conduit connector) 12-20W   For 2W Series Solenoid Valves  
Coil Specifications:

 

100C

200C-U/E

2W200C

2WO250C

2W350C

Coil Insulation &
Protection  Class

 F Class, IP65

F Class, IP65

 H Class, IP65

 H Class, IP65

 H Class, IP65

Coil Duty Cycle

100% ED

100% ED

100% ED

100% ED

100% ED

Electrical Connection

D = DIN (with LED indicator, conduit terminal)

DIN 43650C

D = DIN (with LED indicator, conduit terminal)
DIN 43650B

Electrical Connection

G = Grommet (12” Lead Wire)     

G = Grommet (12” Lead Wire)     

N/A

N/A

N/A

Power Consumption

2.5 Watt (Holding)
160% (Inrush)

3 to 6.5 Watt (Holding)
160% (Inrush)

12 to 20 Watt

25 to 40 Watt

25 to 40 Watt

Certification

(CE Certification)

(CE Certification)
Options: UL, CSA, FM (Exp. Proof)

(CE Certification)

(CE Certification)

(CE Certification)

Valve Configurations Functions

2 way valve configurations: 2 position valves

to turn on and off

3 way valve configurations: 2 position valves

to fully extend single acting cylinder

4 way valve configurations: 2 position valves

to fully extend and retract double acting cylinder

4 way valve configurations: 3 position, closed-center valves

 to stop a double acting cylinder in partial stroke

4 way valve configurations: 3 position, exhaust-center valves

to have both cylinder ports open to exhaust such that the cylinder can be extended and retracted  to facilitate set-up 

4 way valve configurations: 3 position, pressure-center valves

to stop a double acting cylinder in partial stroke with pressure on both ends of the cylinder. 

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   
Copyright © 2001-2010 Sizto Tech Corporation, USA, All rights reserved. Last modified: January 28, 2010,
Information contained herein may be changed without prior notification.