Page 2 - Mars catalog

DO YOU STILL USE

CONVENTIONAL

ACTUATOR MOUNTING ?

Conventional mounting method is to use a bracket and adapter
between ball valve and actuator, however, the bracket and adapter
can often be the source of failure for valve / actuator packages:

A simple misalignment of the bracket and adapter can cause excessive wear and
high torque than expected, this can result in stem leakage or valve stall.
A warped bracket, however slightly, or the bolt drillings lose center, stem side loading
can occur.

If the adapter is too long and bracket bolts are drawn down tightly, the adapter
can jam the valve stem into valve ball resulting in higher torque than the actuator
provided.

The bracket and adapter leave exposed moving parts, when the adapter turns it can
become a pinch point and injury may occur.

The connections between the adapter and the valve stem and the adapter and
the actuator drive can create a slope, known as hysteresis, the looseness of the
connecting surface can cause the valve to not fully open or fully close.

Patented Direct Mount Design
The U.S., Germany, and China Patent and Trademark Offices have awarded Mars Valve
Patent Protection for the Direct Mount Design.

3 China Patent ZL 98 2 09161.3

1 U.S. Patent 5,954,088 2 Germany Patent 299.02.532.2

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