V-Tork VT125S10 New Series Spring Return Pneumatic Actuator F07/F10

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Product Description

V-Tork VT125S10 New Series Spring Return Pneumatic Actuator F07/F10

Spring Return | Rack & Pinion | 90° Rotation | Extruded Aluminium Body | F07/F10 Mounting

The V-Tork VT125S10 is a high-torque spring return pneumatic actuator from the VT New Series range, designed for reliable fail-safe operation on larger quarter-turn valves. Built with an extruded aluminium body and dual-piston rack and pinion mechanism, it delivers greater torque output than smaller models, with automatic return to a preset position on loss of air supply. Compatible with ISO F07 and F10 mounting flanges and NAMUR compatible for easy integration with solenoid valves, limit switches and positioners.


Spring return torque output (N·m)

Air stroke torque shown as 0° / 90° — start and end of stroke. The 90° figure governs sizing in the powered direction; the spring 0° figure governs the fail-safe direction.

Model2.5 bar3 bar3.5 bar4 bar4.5 bar5 bar5.5 bar6 bar7 bar8 barSpring torque
90° / 0°

VT125S05
5 springs

77.7 / 48.2108.5 / 78.9136.5 / 106.9164.4 / 134.9192.4 / 162.9220.4 / 190.9248.4 / 218.8276.4 / 246.8332.3 / 302.8388.3 / 358.780.6 / 51.0

VT125S06
6 springs

67.5 / 32.098.3 / 62.8126.3 / 90.8154.2 / 118.8182.2 / 146.8210.2 / 174.7238.2 / 202.7266.2 / 230.7322.1 / 286.7378.1 / 342.696.7 / 61.2

VT125S07
7 springs

88.1 / 46.7116.1 / 74.7144.0 / 102.7172.0 / 130.7200.0 / 158.6228.0 / 186.6256.0 / 214.6311.9 / 270.6367.9 / 326.5112.8 / 71.4

VT125S08
8 springs

105.9 / 58.6133.8 / 86.6161.8 / 114.5189.8 / 142.5217.8 / 170.5245.8 / 198.5301.7 / 254.4357.7 / 310.4128.9 / 81.6

VT125S09
9 springs

123.6 / 70.5151.6 / 98.4179.6 / 126.4207.6 / 154.4235.6 / 182.4291.5 / 238.3347.5 / 294.3145.0 / 91.8

VT125S10
10 springs

141.4 / 82.3169.4 / 110.3197.4 / 138.3225.4 / 166.3281.3 / 222.2337.3 / 278.2161.1 / 102.0

VT125S11
11 springs

159.2 / 94.2187.2 / 122.2215.2 / 150.2271.1 / 206.1327.1 / 262.1177.2 / 112.2

VT125S12
12 springs

177.0 / 106.1205.0 / 134.0260.9 / 190.0316.9 / 246.0193.3 / 122.4

Key Features:

  • Spring Return Operation: Automatic fail-safe return on loss of air pressure

  • F07/F10 Mounting: Compatible with ISO 5211 F07 and F10 flange standard

  • NAMUR Standard: Compatible with solenoid valves, limit switches and positioners

  • Extruded Aluminium Body: Lightweight and corrosion resistant construction

  • Dual Independent Travel Stoppers: Precise end-of-travel adjustment

  • Modularised Spring Cartridges: Easy maintenance and torque adjustment

Technical Specifications:

ModelVT125S10
Actuation TypeRack & Pinion – Spring Return
Rotation90 Degrees
Mounting FlangeISO 5211 F07/F10
Body MaterialExtruded Aluminium
Operating Pressure2 to 8 bar
CertificationsATEX, SIL 3 (Bureau Veritas), CE

Technical Specs

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