Taiwan Jie-Liu VALUE VP0255DA Pneumatic Butterfly Valve Actuator is a pneumatic actuator that uses compressed air as the power source, driving the gear transmission of the output shaft through the linear motion of the piston rack to produce angular travel output. Available in double-acting and single-acting types, it is widely suitable for the switching and regulation of angular travel valves such as ball valves, butterfly valves, and plug valves. It can also be applied in other rotary scenarios, making it an ideal device for automating industrial pipeline control.

Performance Features
1. Indicator: The indicator complies with VID/VIE3845 NAMUR standards, facilitating the installation of accessories such as limit switches and positioners.
2. Output Shaft: The design of the integrated forged nickel-alloy steel output shaft meets NAMUR, ISO5211, and DIN3337 standards. Custom specifications are available according to customer requirements.
3. Cylinder Body: Formed by extrusion of high-quality aluminum alloy, with a hard anodized surface and Teflon coating.
4. End Cover: Made of die-cast aluminum alloy, with surface hard anodizing and metal polyester coating.
5. Piston: Constructed from cast aluminum with hard anodizing treatment.
6. Adjustment Bolts: Two independent travel adjustment bolts allow for precise adjustment of the valve opening and closing angle within ±5°.
7. Springs: Made of high-quality spring steel, pre-assembled under pressure. They can be easily removed or adjusted in quantity to meet different torque output ranges.
8. Piston Rings: Made of low-friction, long-life composite material, ensuring easy maintenance and replacement.
9. Seals: Nitrile rubber is used at normal temperatures; special seals are available for high or low temperature conditions based on customer requirements.
10. Air Source Interface: Complies with NAMUR standards, allowing direct installation of NAMUR standard solenoid valves. All fasteners are made of stainless steel.

Double-Acting Pneumatic Actuator Models:
VP0020DA
VP0035DA
VP0050DA
VP0075DA
VP0110DA
VP0160DA
VP0225DA
VP0435DA
VP0665DA
VP1000DA
VP1200DA
VP1800DA
VP2700DA
VP3800DA
VP5700DA
VP8000DA
Single-Acting Pneumatic Actuator Models:
VP0020SRK10
VP0035SRK10
VP0050SRK10
VP0075SRK10
VP0110SRK10
VP0160SRK10
VP0225SRK10
VP0435SRK10
VP0665SRK10
VP1000SRK10
VP1200SRK10
VP1800SRK10
VP2700SRK10
VP3800SRK10
VP5700SRK10
VP8000SRK10