Brochure

Severe Service
6 | Fisher
®
easy-e
™
Sliding-Stem Control Valves
If you want answers to your severe service applications, there’s only one automation supplier to choose. Emerson offers the
application experience, technology, and responsive service you need. This means you can get the right easy-e control valve
solution for the right application.
The easy-e control valve features interchangeable trim sets for not only general service applications, but also for a wide range of
severe service applications. This means that one easy-e control valve body can be used in many different applications with a simple
switch of the trim set. These severe service trim sets utilize proven-in-use Fisher technology to reduce noise and eliminate cavitation.
Cavitation Control
Cavitation is a concern for plant operators and maintenance personnel because it can reduce plant availability and protability.
Cavitation not only decreases ow capability through control valves, but may also cause material damage, excessive noise, and
excessive vibration. A wide range of Fisher cavitation-control technologies are available for both clean and dirty services.
Dirty Service
NotchFlo
™
DST Control Valve
A complete easy-e control
valve solution that is specially
designed for dirty, cavitating
services. The trim in this
valve utilizes a series of ow
restrictions and expansions
to eliminate cavitation while
allowing up to 12.7 mm
(½ inch) diameter particulate to
pass through without plugging.
Dirty Service Trim (DST)
Provides cavitation control
for dirty service applications
where the process uid may
contain particulate. The design
of this trim not only eliminates
cavitation, but also allows
up to 19.05 mm (¾ inch)
diameter particulate to pass
through without plugging.
Cavitrol
™
III Trim
Effectively eliminates
cavitation in clean service
applications. The cage in this
trim contains a multitude
of specially shaped, radially
aligned holes that reduce
uid turbulence and stage the
system pressure drop, both of
which control or eliminate the
damaging effects of cavitation.
Clean Service