Emerson easy-Drive User's Guide

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Fisherr D3 Control Valve
The Fisher D3 control valve is a compact, rugged valve
designed for on/off or throttling control, and utilizes
FloPro technology, using either pneumatic or electric
control. This valve is ideal for use as a dump valve on
gas separators and scrubbers. It is also well suited for
other high pressure applications in natural gas
production, compression, and processing. NPS 1 and 2
D3 control valves are available with CL900 NPT end
connections and CL600 raised face flanged end
connections.
TheD3offerseasymaintenance.Thetrimandpacking
can be maintained by removing the deep-bore
hammer nut and lifting the actuator/bonnet assembly
off the valve without disassembling the actuator.
Features
Electric and Pneumatic
Safer Bonnet / Valve Body Connection-- The unique
design provides additional protection if disassembly
of bonnet/valve body connection is inadvertently
started while there is still pressure in the valve body.
Pins mounted in the valve bonnet help ensure the
bonnet disengages from the valve body as the
hammer nut is loosened, while the threads are still
engaged. This allows internal pressure to be vented,
while keeping the actuator retained to the valve
body.
Field-Selectable Flow Rates--The FloPro feature
allows adjustment of the flow capacity without
changing the trim. In this way, a single trim set can
be used for more than one flow requirement,
reducing inventory and maintenance costs. See
figure 1.
W9797
FISHER D3 CONTROL VALVE WITH easy-Drive™ ELECTRIC
ACTUATOR (NPS 2 NPT END CONNECTION)
W9249
FISHER D3 CONTROL VALVE
(NPS 2 RF FLANGED END CONNECTION)
D3 Valve
D103269X012
Product Bulletin
51.2:D3
February 2014