Actuators cut air use, easing environmental impact
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Tomoe Valve product story
Edited by the Engineeringtalk editorial team
Feb 6, 2008
The G series actuator range now has 15 double acting and 15 spring return models and covers the Tomoe valve range from DN400 - DN600.
Tomoe Valve G series actuators uses 30% lower air consumption than its rack and pinion equivalent, making it a green solution for the industry.
"It is becoming increasingly important for the industry to do all that is possible to be environmentally friendly", said Willie Duncan, Managing Director, Tomoe Valve.
"By using less air consumption and therefore less energy, this extended range of actuators goes some way in helping our customers to maintain a 'greener' factory".
The G series actuator range now has 15 double acting and 15 spring return models and covers the Tomoe valve range from DN400 - DN600.
Full traceability is offered with each actuator and a wide range of options are available including a stainless steel bodied actuator as well as a full range of other protective coatings.
Tomoe's extended range of actuators incorporates the Scotch Yoke design, using a five-degree offset.
This design enables the maximum torque to be delivered from the valve seat at closed position.
The first five degrees of break out movement are crucial to an efficient disc separation from the seat and the five-degree asymmetric operation maximises its efficiency.
The extremely high torque output also results in smaller envelope dimensions for no loss in torque output.
The asymmetric torque curve of the G series range adheres to the stringent requirements of the Tomoe butterfly valve, where the maximum torque is required, at the seat break in and break out positions.
Making the G series suitable for butterfly valves and providing the most efficient actuation valve range.
Common problems such as O rings sticking and rolling when used as piston seals are eliminated with the G series, because the piston seals are PTFE and have an internal cylinder surface finish, which provides a low-friction factor between the cylinder and the pistons.
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