Kenwood Valve Controls (India) Private Limited

Double Acting Pneumatic Actuators for Quarter Turn Valves and Dampers 

Design features and benefits

• Symmetric/canted Scotch Yoke design using precision bearing eliminates dead band in the yoke mechanism, providing the greatest torque output at the beginning and at the end of stroke. 
• Torque from 300 to 46000NM to operate Ball, Butterfly, Plug and Damper Valves.
• Scotch yoke mechanism is enclosed in Ductile iron weather proof housing with breather. 
• Yoke is supported by larger diameter DU bearing for smooth operation and extended service life. 
• Piston rod is supported by two bronze/ sintered bronze bearings to take the transverse force and to give long service life of piston seal & piston rod seals. 
• Piston rod is high strength steel as a standard which is ground, hard chrome plated and polished to mirror finish. This will provide maximum corrosion resistance and minimum friction loads on dynamic seals 
• Carbon impregnated PTFE piston bearing reduces the friction between the piston and cylinder bore and allows the piston to operate even without lubricant. 
• An innovative composite material superior to Stainless Steel for cylinder tube construction as standard provides superior corrosion resistance both internally and externally. Also the weight of these cylinders are lighter by 75 % as compared to steel cylinders. These cylinders gives trouble-free performance in chemical, high moisture and other adverse environments including salt and chlorinated water which results in significant reduction in life cycle costs. Steel/Stainless Steel is also available for high pressure gas and hydraulic pressure source. 
• External end travel stops adjustment screws allows precise setting of valve opening/closing to the extent of ±5° to take care of loss of motion between valve and actuator. 
• Top accessory shaft has NAMUR slot and position indicator. This allows mounting of limit switches and accessories close to the actuator, resulting in a more compact, precise assembly, and eliminates the need for coupling. 
• Actuator mounting dimensions are as per ISO 5211 as a standard or as per customer requirement for direct mounting of actuator onto the valve, eliminating the need for any bracket and coupling. 

Options and Accessories

• Declutchable manual override 
• Limit Switches 
• Positioner 
• I/P converter 
• Feed back tranmitter 
• Flow control valve 
• Volume bottle 
• Air filter regulator 
• Solenoid Valve 
• Volume booster 

Product Details:

• Designed for on-off or modulating control of Knife gate valve, Tank bottom Valve, Globe and Gate valves
• Standard cylinder barrel material is FRP. Can be offered in carbon steel if required
• Failsafe arrangement or emergency operation can be offered

Failclose/Failopen Pneumatic Actuators(DAFS) for Quarter Turn Valves and Dampers 

Design features and benefits

• Symmetric/canted Scotch Yoke design using precision bearing eliminates dead band in the yoke mechanism, providing the greatest torque output at the beginning and at the end of stroke. 
• Torque from 500 to 15000NM to operate Ball, Butterfly, Plug and Damper Valves.
• Scotch yoke mechanism is enclosed in Ductile iron weather proof housing with breather. 
• Yoke is supported by larger diameter DU bearing for smooth operation and extended service life. 
• Piston rod is supported by two bronze/ sintered bronze bearings to take the transverse force and to give long service life of piston seal & piston rod seals. 
• Piston rod is high strength steel as a standard which is ground, hard chrome plated and polished to mirror finish. This will provide maximum corrosion resistance and minimum friction loads on dynamic seals 
• Carbon impregnated PTFE piston bearing reduces the friction between the piston and cylinder bore and allows the piston to operate even without lubricant. 
• An innovative composite material superior to Stainless Steel for cylinder tube construction as standard provides superior corrosion resistance both internally and externally. Also the weight of these cylinders are lighter by 75 % as compared to steel cylinders. These cylinders gives trouble-free performance in chemical, high moisture and other adverse environments including salt and chlorinated water which results in significant reduction in life cycle costs. Steel/Stainless Steel is also available for high pressure gas and hydraulic pressure source. 
• External end travel stops adjustment screws allows precise setting of valve opening/closing to the extent of ±5° to take care of loss of motion between valve and actuator. 
• Top accessory shaft has NAMUR slot and position indicator. This allows mounting of limit switches and accessories close to the actuator, resulting in a more compact, precise assembly, and eliminates the need for coupling. 
• Actuator mounting dimensions are as per ISO 5211 as a standard or as per customer requirement for direct mounting of actuator onto the valve, eliminating the need for any bracket and coupling. 

Options and Accessories

• Declutchable manual override 
• Limit Switches 
• Positioner 
• I/P converter 
• Feed back tranmitter 
• Flow control valve 
• Volume bottle 
• Air filter regulator 
• Solenoid Valve 
• Volume booster 

A Double acting rotary pneumatic actuator is a compact balanced rack and penion designed which generates high torque for rotary valves & dampers such as Ball/Butterfly/Plug type valves/dampers . It uses compressed air on both sides of the piston to provide bidirectional rotation, ensuring precise control and consistent torque during opening and closing. Ideal for industrial applications in process plants,oil & gas, power plants,water & waste water treatment,pulp & paper, food, Brewery and FMCG industries. It delivers robust, reliable performance in demanding environments.

 

Single acting failsafe systems for pneumatic actuators use compressed air to move the actuator in one direction and returns to original position with the help of accumulated air in the air reservoir when the mail air pressure is lost. This design ensures a "fail-safe" operation—automatically reverting to a safe position (open or closed) during power or air failure. Common in safety-critical applications like emergency shutdown valves, they provide reliable, automatic actuation under fault conditions.

 

A double acting rotary pneumatic actuator uses air pressure on both sides of a piston to produce rotary motion in both directions. It provides precise control and consistent torque during opening and closing. Commonly used in valve automation, it requires an air supply for both extension and retraction, ensuring reliable bidirectional movement for applications needing tight control.

 

Industrial pneumatic actuators convert compressed air into mechanical motion to automate valves or equipment. Available in linear and rotary types, they offer fast, reliable, and safe operation in harsh environments. Commonly used in process control, packaging, and material handling, they provide efficient and cost-effective motion control with low maintenance requirements.

 

A linear pneumatic actuator uses compressed air to create straight-line motion, typically to push or pull a load. It consists of a cylinder, piston, and rod, and is available in single-acting or double-acting types. Widely used in automation, packaging, and assembly lines, it offers fast response, simple design, and reliable performance in various industrial applications.

 

The FS Series Pneumatic Actuator is a compact, cost-effective actuator designed for applications requiring reliable and efficient linear motion this actuator utilizes an air-driven bellows mechanism to achieve movement.

Key Features:

• Compact Design: The FS series actuators are lightweight and space-saving, making them suitable for installations with limited space.

• Air-Driven Operation: Utilizes compressed air to drive the actuator, offering a clean and efficient power source.

• Flexible Stroke Length: The actuators are available in various stroke lengths to meet specific application requirements.

• Durable Construction: Built with high-quality materials to ensure longevity and reliable performance in demanding environments.

• Versatile Applications: Ideal for use in various industries, including automation, packaging, and material handling.