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Air & Electric Actuated Valves, Angle Seat Valves

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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. Valve bodies 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

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Material Size Available
Single Acting Air Actuated Ball Valve  STC Valve 316 Stainless Steel 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 STC Valve 316 Stainless Steel 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)		 STC Valve 316 Stainless Steel 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)		 STC Valve 316 Stainless Steel 3/8″;
1/2″;
3/4″;
1″;
1 1/4″;
1 1/2″;
2″;
2 1/2″;
3″;

STC Actuated Ball Valve Compatibility Chart

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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

Namur Solenoid Valves for Controlling Air Actuated Valves & Proximity Switches/Position Indicators

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Port Size/
Cable Entry		 Voltage Electrical Connection Specifications
3V310-1/4B  STC Valve 1/4″ NPT 1 = 12VDC
2 = 24VDC2A = 24VAC
3 = 110VAC
4 = 220VAC		 G = Grommet

D = DIN (with LED)

 3 Way Namur Single Solenoid Valve
3V320-1/4B STC Valve 1/4″ NPT 1 = 12VDC
2 = 24VDC2A = 24VAC
3 = 110VAC
4 = 220VAC		 G = Grommet

D = DIN (with LED)

 3 Way Namur Double Solenoid Valve
4V310-1/4B STC Valve 1/4″ NPT 1 = 12VDC
2 = 24VDC2A = 24VAC
3 = 110VAC
4 = 220VAC		 G = Grommet

D = DIN (with LED)

 4 Way Namur Single Solenoid Valve
4V320-1/4B STC Valve 1/4″ NPT 1 = 12VDC
2 = 24VDC2A = 24VAC
3 = 110VAC
4 = 220VAC		 G = Grommet

D = DIN (with LED)

 4 Way Namur Double Solenoid Valve
3V310-1/4B STC Valve 1/4″ NPT 1 = 12VDC
2 = 24VDC2A = 24VAC
3 = 110VAC
4 = 220VAC		 E = Explosion Proof

IS = Intrinsically Safe (24VDC Only)

 3 Way Namur Single Solenoid Valve
3V320-1/4B STC Valve 1/4″ NPT 1 = 12VDC
2 = 24VDC2A = 24VAC
3 = 110VAC
4 = 220VAC		 E = Explosion Proof

IS = Intrinsically Safe (24VDC Only)

 3 Way Namur Double Solenoid Valve
4V310-1/4B STC Valve 1/4″ NPT 1 = 12VDC
2 = 24VDC2A = 24VAC
3 = 110VAC
4 = 220VAC		 E = Explosion Proof

IS = Intrinsically Safe (24VDC Only)

 4 Way Namur Single Solenoid Valve
4V320-1/4B STC Valve 1/4″ NPT 1 = 12VDC
2 = 24VDC2A = 24VAC
3 = 110VAC
4 = 220VAC		 E = Explosion Proof

IS = Intrinsically Safe (24VDC Only)

 4 Way Namur Double Solenoid Valve
APL-210N STC Valve 2 1/2″ NPT 5A @ 8 to 14VDC
4A @ 30VDC
0.4A @ 125VDC
0.2A @ 250VDC5A @ 125VAC
3A @ 250VAC		 Position Indicator for Rotary Actuator
IP67 Enclosure
2 SPDT Mechanical Limit Switches
Visual Open/Closed Indicator
APL-310N STC Valve 2 1/2″ NPT 0.6A 125VDC
0.3A 250VDC16A 125 to 250VAC		 Position Indicator for Rotary Actuator
2 SPDT Mechanical Limit Switches
Visual Open/Closed Indicator
APL-410 STC Valve 2 3/4″ NPT 0.6A 125VDC
0.3A 250VDC15A 125 to 250VAC		 Explosion Proof
Position Indicator for Rotary Actuator
Exd II BT6, IP67 Enclosure
2 SPDT Mechanical Limit Switches
Visual Open/Closed Indicator

Electric Actuated Valves

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Material Sizes Available
2 Way Valve with
Actuator with On/Off Indicator		 STC 2 Way Valve with Actuator with On/Off Indicator 316 Stainless Steel 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		 316 Stainless Steel 1/4″;
3/8″;
1/2″;
3/4″;
1″;
1 1/4″;
1 1/2″;
2″;

STC Electric Actuators

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Torque Cycle Time Weight Special Function Control Signal Ball Valve Size, NPT
Diameter (DN)		 Voltage Options Rotation
E-05 STC Valve 50N * M 20S 2.6Kg Visual Indicator Visual Indicator 1/2″ to 1 1/2″ (15-40) 24VDC, 24VAC, 110VAC, 220VAC 90°
E-10 STC Valve 100N * M 30/60S 3.7Kg Visual Indicator Visual Indicator 2″ to 2 1/2″ (50-65) 24VDC, 24VAC, 110VAC, 220VAC 90°
E-20 STC Valve 200N * M 30/60S 6.7Kg Visual Indicator Visual Indicator 2 1/2″ to 3″ (65-80) 24VDC, 24VAC, 110VAC, 220VAC 90°
E-40 STC Valve 400N * M 30/60S 7.2Kg Visual Indicator Visual Indicator 3″ to 4″ (80-100) 24VDC, 24VAC, 110VAC, 220VAC 90°
E-60 STC Valve 600N * M 45S 7.3Kg Visual Indicator Visual Indicator 4″ (100-125) 24VDC, 24VAC, 110VAC, 220VAC 90°
E-100 STC Valve 1000N * M 50S 7.3Kg Visual Indicator Visual Indicator 6″ (125-150) 24VDC, 24VAC, 110VAC, 220VAC 90°
E-200 STC Valve 2000N * M 100S 11.2Kg Visual Indicator Visual Indicator 6″ to 12″ (150-300) 24VDC, 24VAC, 110VAC, 220VAC 90°
E-05S STC Valve 50N * M 20S 2.6Kg Passive Contact S = Contact Signal 1/2″ to 1 1/2″ (15-40) 24VDC, 24VAC, 110VAC, 220VAC 90°
E-10S STC Valve 100N * M 30/60S 3.7Kg Passive Contact S = Contact Signal 2″ to 2 1/2″ (50-65) 24VDC, 24VAC, 110VAC, 220VAC 90°
E-20S STC Valve 200N * M 30/60S 6.7Kg Passive Contact S = Contact Signal 2 1/2″ to 3″ (65-80) 24VDC, 24VAC, 110VAC, 220VAC 90°
E-40S STC Valve 400N * M 30/60S 7.2Kg Passive Contact S = Contact Signal 3″ to 4″ (80-100) 24VDC, 24VAC, 110VAC, 220VAC 90°
E-05R STC Valve 50N * M 20S 2.6Kg Opening Signal R = Potentiometer
(1-5K)		 1/2″ to 1 1/2″ (15-40) 24VDC, 220VAC 90°
E-10R STC Valve 100N * M 30/60S 3.7Kg Opening Signal R = Potentiometer
(1-5K)		 2″ to 2 1/2″ (50-65) 24VDC, 24VAC, 110VAC, 220VAC 90°
E-20R STC Valve 200N * M 30/60S 6.7Kg Opening Signal R = Potentiometer
(1-5K)		 2 1/2″ to 3″ (65-80) 24VDC, 24VAC, 110VAC, 220VAC 90°
E-40R STC Valve 400N * M 30/60S 7.2Kg Opening Signal R = Potentiometer
(1-5K)		 3″ to 4″ (80-100) 24VDC, 24VAC, 110VAC, 220VAC 90°
E-05PC 50N * M 20S 2.6Kg Proportional Control T = 4-20mA 1/2″ to 1 1/2″ (15-40) 24VDC, 220VAC 90°
E-10PC 100N * M 30/60S 3.7Kg Proportional Control T = 4-20mA 2″ to 2 1/2″ (50-65) 24VDC, 24VAC, 110VAC, 220VAC 90°
E-20PC 200N * M 30/60S 6.7Kg Proportional Control T = 4-20mA 2 1/2″ to 3″ (65-80) 24VDC, 24VAC, 110VAC, 220VAC 90°
E-40PC 400N * M 30/60S 7.2Kg Proportional Control T = 4-20mA 3″ to 4″ (80-100) 24VDC, 24VAC, 110VAC, 220VAC 90°

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