Lower air consumption
March 1st 2008 Tomoe Valve believes that on a
torque-for-torque comparison its
recently extended G series actuator
range uses 30% lower air
consumption than its rack
and pinion equivalent,
making it a green
solution for industry.
The G Series actuator
now has 15 doubleacting
and 15 spring
return models and covers the
Tomoe valve range from DN400 to
DN600. Full traceability is offered
with each actuator, and a range of
options are available, including a
stainless steel bodied actuator and
other protective coatings.
The actuators incorporate the
Scotch Yoke design, using a 5° offset.
This allows maximum torque to
be delivered from the valve seat at
closed position. The
company says the
first 5° of break out
movement is crucial
to an efficient disc
separation from the
seat and the 5°
asymmetric operation maximises
its efficiency. Problems such as O
rings sticking and rolling when
used with piston seals are said to
be eliminated. | 
