BIFFI MORIN S SERIES DESIGNED WITH A HEART OF STAINLESS STEEL

DESIGNED WITH A HEART OF STAINLESS STEEL

Stainless steel yoke

The heart of any scotch yoke actuator is the yoke. S series actuators use

17-4PH stainless for this critical area as standard.

The yoke is the mechanism used to convert linear force to torque.

This area is most often where the life of the actuator is controlled.

Principles of construction

Using high quality materials of construction and modern rugged design

concepts provides the standard for high quality, low cost valve actuation.

The S actuator housings are all machined from 316 stainless steel castings.

This produces a rugged, low cost product through reduced machining time

and by eliminating wasteful excess material.

Any components that rotate or slide during operation, such as the high

strength stainless steel output shaft, stainless steel piston rod, stainless steel

thrust pin or the stainless steel piston, are all supported by replaceable friction

reducing bearings.

Bi-directional travel stops

Adjustable stops on each end cap provide the flexibility of accurate valve rotation

positioning at the end of the ‘open’ and ‘close’ stroke. Both stops are located

on the cylinder centerline, the optimal osition to maximize travel adjustment

and eliminate any detrimental side loading on the travel stops.

Adjustable from 82° to 98°.

Ingress protection

Standard IP66. Optional IP68.

Spring designed for safety

All spring return models incorporate a ‘man-safe’ spring design that allows

the actuator to be safely assembled and disassembled in the field without

the need for special tools. The integral tie rods are bored and tapped to

provide a means of loading and unloading the spring in a safe andconvenient

manner.