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A41 Valve

D500212X012

Product Bulletin

21.1:A41

January 2013

Installation

It is recommended that the valve drive shaft be

mounted in a horizontal position. Operating

conditions may require specific valve/actuator fail

action, styles, positions and flow direction. Valves with

NOVEX seal rings require mounting in the reverse flow

direction. Refer to figure 4. Large valve/actuator

assemblies may r equire additional support because of

the combined weight.

Fail Action: For actuators with spring returns, spring

fail action is available for: fail-to-open or fail-to-close

valveaction.Thevalveaction is field rev ersible.

For assistance in selecting the valve/actuator

mounting suited to your application, consult your

Emerson Process Management sales office.

Dimensions for wafer-style and single-flanged valves

are shown in figure 6.

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