Air & Electric Actuated Valves, Angle Seat Valves
STC’s high performance line of air & electric actuated valves and angle-seat valves offer a wide range of capabilities to suit your unique operating conditions. The bodies of STC Valves are made from Stainless Steel to stand up to harsh conditions. All Air also offers accessories, including position indicators, explosion-proof options, namur valves, proportional control actuators, contact signal actuators, and potentiometer actuators.
Product Lineup
Air Actuated Valves
Single Acting Air Actuated Ball Valve

Material: 316 Stainless Steel
Size Available: 1/4″; 3/8″; 1/2″; 3/4″; 1″; 1 1/4″; 1 1/2″; 2″; 2 1/2″; 3″; 4″
Double Acting Air Actuated Ball Valve

Material: 316 Stainless Steel
Size Available: 1/4″; 3/8″; 1/2″; 3/4″; 1″; 1 1/4″; 1 1/2″; 2″; 2 1/2″; 3″; 4″
Single Acting Air Actuated Angle Seat Valve (Normally Closed)
Material: 316 Stainless Steel
Size Available: 3/8″; 1/2″; 3/4″; 1″; 1 1/4″; 1 1/2″; 2″; 2 1/2″; 3″
Double Acting Air Actuated Angle Seat Valve (Fail Closed)
Material: 316 Stainless Steel
Size Available: 3/8″; 1/2″; 3/4″; 1″; 1 1/4″; 1 1/2″; 2″; 2 1/2″; 3″
Namur Solenoid Valves for Controlling Air Actuated Valves & Proximity Switches/Position Indicators
3V310-1/4B 3 Way Namur Single Solenoid Valve

Port Size/Cable Entry: 1/4″ NPT
Voltage:
1 = 12VDC
2 = 24VDC2A = 24VAC
3 = 110VAC
4 = 220VAC
Electrical Connection:
G = Grommet
D = DIN (with LED)
3V320-1/4B 3 Way Namur Double Solenoid Valve

Port Size/Cable Entry: 1/4″ NPT
Voltage:
1 = 12VDC
2 = 24VDC2A = 24VAC
3 = 110VAC
4 = 220VAC
Electrical Connection:
G = Grommet
D = DIN (with LED)
4V310-1/4B 4 Way Namur Single Solenoid Valve

Port Size/Cable Entry: 1/4″ NPT
Voltage:
1 = 12VDC
2 = 24VDC2A = 24VAC
3 = 110VAC
4 = 220VAC
Electrical Connection:
G = Grommet
D = DIN (with LED)
4V320-1/4B 4 Way Namur Double Solenoid Valve

Port Size/Cable Entry: 1/4″ NPT
Voltage:
1 = 12VDC
2 = 24VDC2A = 24VAC
3 = 110VAC
4 = 220VAC
Electrical Connection:
G = Grommet
D = DIN (with LED)
3V310-1/4B 3 Way Namur Single Solenoid Valve

Port Size/Cable Entry: 1/4″ NPT
Voltage:
1 = 12VDC
2 = 24VDC2A = 24VAC
3 = 110VAC
4 = 220VAC
Electrical Connection:
E = Explosion Proof
IS = Intrinsically Safe (24VDC Only)
3V320-1/4B 3 Way Namur Double Solenoid Valve

Port Size/Cable Entry: 1/4″ NPT
Voltage:
1 = 12VDC
2 = 24VDC2A = 24VAC
3 = 110VAC
4 = 220VAC
Electrical Connection:
E = Explosion Proof
IS = Intrinsically Safe (24VDC Only)
4V310-1/4B 4 Way Namur Single Solenoid Valve

Port Size/Cable Entry: 1/4″ NPT
Voltage:
1 = 12VDC
2 = 24VDC2A = 24VAC
3 = 110VAC
4 = 220VAC
Electrical Connection:
E = Explosion Proof
IS = Intrinsically Safe (24VDC Only)
4V320-1/4B 4 Way Namur Double Solenoid Valve

Port Size/Cable Entry: 1/4″ NPT
Voltage:
1 = 12VDC
2 = 24VDC2A = 24VAC
3 = 110VAC
4 = 220VAC
Electrical Connection:
E = Explosion Proof
IS = Intrinsically Safe (24VDC Only)
APL-210N Position Indicator for Rotary Actuator

Port Size/Cable Entry: 2 1/2″ NPT
Voltage: Max. 250VAC or DC
Electrical Connection:
5A @ 8 to 14VDC
4A @ 30VDC
0.4A @ 125VDC
0.2A @ 250VDC
5A @ 125VAC
3A @ 250VAC
IP67 Enclosure
2 SPDT Mechanical Limit Switches
Visual Open/Closed Indicator
APL-310N Position Indicator for Rotary Actuator

Port Size/Cable Entry: 2 1/2″ NPT
Voltage: Max. 250VAC or DC
Electrical Connection:
0.6A 125VDC
0.3A 250VDC
16A 125 to 250VAC
2 SPDT Mechanical Limit Switches
Visual Open/Closed Indicator
APL-410 Explosion Proof Position Indicator for Rotary Actuator

Port Size/Cable Entry: 2 3/4″ NPT
Voltage: Max. 250VAC or DC
Electrical Connection:
0.6A 125VDC
0.3A 250VDC
15A 125 to 250VAC
Exd II BT6, IP67 Enclosure
2 SPDT Mechanical Limit Switches
Visual Open/Closed Indicator
Electric Actuated Valves
2 Way Valve with Actuator with On/Off Indicator

Material: 316 Stainless Steel
Sizes Available: 1/4″; 3/8″; 1/2″; 3/4″; 1″; 1 1/4″; 1 1/2″; 2″; 2 1/2″; 3″; 4″
3 Way (L Port) with Actuator with On/Off Indicator

Material: 316 Stainless Steel
Sizes Available: 1/4″; 3/8″; 1/2″; 3/4″; 1″; 1 1/4″; 1 1/2″; 2″
Electric Actuators
E-05

Torque: 50N * M
Cycle Time: 20S
Weight: 2.6Kg
Control Signal: Visual Indicator
Ball Valve Size, NPT Diameter (DN): 1/2″ to 1 1/2″ (15-40)
Voltage: 24VDC, 24VAC, 110VAC, 220VAC
Rotation: 90°
E-10

Torque: 100N * M
Cycle Time: 30/60S
Weight: 3.7Kg
Control Signal: Visual Indicator
Ball Valve Size, NPT Diameter (DN): 2″ to 2 1/2″ (50-65)
Voltage: 24VDC, 24VAC, 110VAC, 220VAC
Rotation: 90°
E-20

Torque: 200N * M
Cycle Time: 30/60S
Weight: 6.7Kg
Control Signal: Visual Indicator
Ball Valve Size, NPT Diameter (DN): 2 1/2″ to 3″ (65-80)
Voltage: 24VDC, 24VAC, 110VAC, 220VAC
Rotation: 90°
E-40

Torque: 400N * M
Cycle Time: 30/60S
Weight: 7.2Kg
Control Signal: Visual Indicator
Ball Valve Size, NPT Diameter (DN): 3″ to 4″ (80-100)
Voltage: 24VDC, 24VAC, 110VAC, 220VAC
Rotation: 90°
E-60

Torque: 600N * M
Cycle Time: 45S
Weight: 7.3Kg
Control Signal: Visual Indicator
Ball Valve Size, NPT Diameter (DN): 4″ (100-125)
Voltage: 24VDC, 24VAC, 110VAC, 220VAC
Rotation: 90°
E-100

Torque: 1000N * M
Cycle Time: 50S
Weight: 7.3Kg
Control Signal: Visual Indicator
Ball Valve Size, NPT Diameter (DN): 6″ (125-150)
Voltage: 24VDC, 24VAC, 110VAC, 220VAC
Rotation: 90°
E-200

Torque: 2000N * M
Cycle Time: 100S
Weight: 11.2Kg
Control Signal: Visual Indicator
Ball Valve Size, NPT Diameter (DN): 6″ to 12″ (150-300)
Voltage: 24VDC, 24VAC, 110VAC, 220VAC
Rotation: 90°
E-05S

Torque: 50N * M
Cycle Time: 20S
Weight: 2.6Kg
Special Function: Passive Contact
Control Signal: S = Contact Signal
Ball Valve Size, NPT Diameter (DN): 1/2″ to 1 1/2″ (15-40)
Voltage: 24VDC, 24VAC, 110VAC, 220VAC
Rotation: 90°
E-10S

Torque: 100N * M
Cycle Time: 30/60S
Weight: 3.7Kg
Special Function: Passive Contact
Control Signal: S = Contact Signal
Ball Valve Size, NPT Diameter (DN): 2″ to 2 1/2″ (50-65)
Voltage: 24VDC, 24VAC, 110VAC, 220VAC
Rotation: 90°
E-20S

Torque: 200N * M
Cycle Time: 30/60S
Weight: 6.7Kg
Special Function: Passive Contact
Control Signal: S = Contact Signal
Ball Valve Size, NPT Diameter (DN): 2 1/2″ to 3″ (65-80)
Voltage: 24VDC, 24VAC, 110VAC, 220VAC
Rotation: 90°
E-40S

Torque: 400N * M
Cycle Time: 30/60S
Weight: 7.2Kg
Special Function: Passive Contact
Control Signal: S = Contact Signal
Ball Valve Size, NPT Diameter (DN): 3″ to 4″ (80-100)
Voltage: 24VDC, 24VAC, 110VAC, 220VAC
Rotation: 90°
E-05R

Torque: 50N * M
Cycle Time: 20S
Weight: 2.6Kg
Special Function: Opening Signal
Control Signal: R = Potentiometer (1-5K)
Ball Valve Size, NPT Diameter (DN): 1/2″ to 1 1/2″ (15-40)
Voltage: 24VDC, 220VAC
Rotation: 90°
E-10R

Torque: 100N * M
Cycle Time: 30/60S
Weight: 3.7Kg
Special Function: Opening Signal
Control Signal: R = Potentiometer (1-5K)
Ball Valve Size, NPT Diameter (DN): 2″ to 2 1/2″ (50-65)
Voltage: 24VDC, 24VAC, 110VAC, 220VAC
Rotation: 90°
E-20R

Torque: 200N * M
Cycle Time: 30/60S
Weight: 6.7Kg
Special Function: Opening Signal
Control Signal: R = Potentiometer (1-5K)
Ball Valve Size, NPT Diameter (DN): 2 1/2″ to 3″ (65-80)
Voltage: 24VDC, 24VAC, 110VAC, 220VAC
Rotation: 90°
E-40R

Torque: 400N * M
Cycle Time: 30/60S
Weight: 7.2Kg
Special Function: Opening Signal
Control Signal: R = Potentiometer (1-5K)
Ball Valve Size, NPT Diameter (DN): 3″ to 4″ (80-100)
Voltage: 24VDC, 24VAC, 110VAC, 220VAC
Rotation: 90°
E-05PC

Torque: 50N * M
Cycle Time: 20S
Weight: 2.6Kg
Special Function: Proportional Control
Control Signal: T = 4-20mA
Ball Valve Size, NPT Diameter (DN): 1/2″ to 1 1/2″ (15-40)
Voltage: 24VDC, 220VAC
Rotation: 90°
E-10PC

Torque: 100N * M
Cycle Time: 30/60S
Weight: 3.7Kg
Special Function: Proportional Control
Control Signal: T = 4-20mA
Ball Valve Size, NPT Diameter (DN): 2″ to 2 1/2″ (50-65)
Voltage: 24VDC, 24VAC, 110VAC, 220VAC
Rotation: 90°
E-20PC

Torque: 200N * M
Cycle Time: 30/60S
Weight: 6.7Kg
Special Function: Proportional Control
Control Signal: T = 4-20mA
Ball Valve Size, NPT Diameter (DN): 2 1/2″ to 3″ (65-80)
Voltage: 24VDC, 24VAC, 110VAC, 220VAC
Rotation: 90°
E-40PC

Torque: 400N * M
Cycle Time: 30/60S
Weight: 7.2Kg
Special Function: Proportional Control
Control Signal: T = 4-20mA
Ball Valve Size, NPT Diameter (DN): 3″ to 4″ (80-100)
Voltage: 24VDC, 24VAC, 110VAC, 220VAC
Rotation: 90°
Actuated Ball Valve Compatibility Chart
| Ball Valve Part No. | Port Size NPT | Single Acting Part No. | Double Acting Part No. | Torque at 100PSI for Double Acting Actuator (lbs) |
|---|---|---|---|---|
| V3-1/2-A | 1/2″ | AT063S | AT050D | 87 |
| V3-3/4-A | 3/4″ | AT063S | AT050D | 226 |
| V3-1-A | 1″ | AT063S | AT050D | 405 |
| V3-1 1/4-A | 1 1/4″ | AT075S | AT063D | 737 |
| V3-1 1/2-A | 1 1/2″ | AT088S | AT063D | 1072 |
| V3-2-A | 2″ | AT088S | AT075D | |
| V3-2 1/2-A | 2 1/2″ | AT100S | AT088D | 2230 |
| V3-3-A | 3″ | AT125S | AT100D | 3654 |
| V3-4-A | 4″ | AT145S | AT125D |
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