The Fisher D4 control valve is a compact, rugged globe
valve designed primarily for high-pressure throttling
applications using either pneumatic or electric control.
This valve is ideal for use on pressure and flow control
applications within the oil and gas production industry.
The D4 is an excellent control valve for high-pressure
separators, scrubbers, and other processing
equipment. These valves are especially useful for
either throttling or on/off control of liquids or gases
which are gritty, sticky, or which have a tendency to
builduponinternalvalveparts.
If the control valve requires maintenance, the trim and
packing can be maintained by removing the deep-bore
hammer nut and lifting the actuator/bonnet assembly
off the valve without disassembling the actuator.
W9933-1
Product Bulletin
51.2:D4
November 2013
Features
Electric and Pneumatic
Safer Bonnet / Valve Body Connection– 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 removed, while the threads are still
engaged.
Heavy-Duty Guiding–Massive guiding (figures 1 and
2) positively aligns the valve plug in the seat ring for
reliable service. The screwed-in seat ring completely
encloses the seat ring gasket.
Live-loaded Packing System–The packing system
provides an improved stem seal to help prevent the
loss of valuable or hazardous process fluids or gases.
It features Fisher ENVIRO-SEALt packing
technology to provide reduced packing
maintenance.
FISHER D4 CONTROL VALVE WITH easy-Drive™ ELECTRIC
ACTUATOR (NPS 2 RF FLANGED END CONNECTION)
W8531
FISHER D4 CONTROL VALVE
(NPS 2 NPT END CONNECTION)
www.Fisher.com
Product Bulletin
51.2:D4
November 2013
D4 Valve
D103039X012
Features (continued)
Electric and Pneumatic
NACE Constructions–NACE compatible trim is
available with the D4 control valve. These
constructions meet the metallurgical requirements
of NACE MR0175 / ISO 15156.
Quick-Change Valve Plug–Removable groove pin
allows quick, easy valve plug replacement.
Severe Service Capability with Tungsten Carbide
Trim–D4 valves are available with tungsten carbide
trim for erosive service. This trim is designed
specifically for severe service applications in the oil
and gas industry. Durable tungsten carbide trim
may benefit your application by wearing better and
lasting longer.
Easy Installation–Compact design allows
installation where space is a premium. Screwed
valve bodies feature compact face-to-face
dimensions while flanged valve bodies conform to
ISA-75 standards for maximum versatility.
Electric
Low Power Consumption-- The Fisher easy-Drive
electric actuator operates with 12 or 24VDC and
less than 0.1 watt hours per operation, using
Modbus,4-20mA,1-5VDC,ordrycontactcontrol
signals.
Low Temperature-- Theeasy-Driveelectricactuator
design allows use in ambient temperatures as low
as -20C(-4F) without use of a heater.
Easy Installation--The compact design allows
installation where space is a premium. Fisher
easy-Drive calibrates by simply opening and closing
the valve.
Remote Monitoring and Configuration-- Loss of
signal position is programmable over Modbus.
Pneumatic
Easy Maintenance–Hammer nut bonnet/body joint
allows repair or maintenance with a minimum of
tools, without removing the valve body from the
piping system. Seat ring can be removed with the
same service tools used with a Fisher D valve.
Integral Bonnet Flange– Bonnet has an integral
flange that accepts hammer nut force when making
the bonnet-to-body connection. There are no snap
rings subject to possible failure in sour service or in
atmospheric corrosion.
Standard Trim for Throttling or On-Off Service–
Micro-Form trim is standard for throttling or on-off
service at no extra cost.
Application Flexibility–Choices of port diameters up
to 31.8 mm (1.25 inches), end connections, and
trim materials suit these valves to many
applications, including sour service.
Low Temperature Materials--Valve construction
materialsallowuseinapplicationsaslowas-40C
(-40F) for the pneumatic actuator.
Installation
D4 control valves may be installed in any position, but
normally the actuator is vertical and above the valve.
Install the control valve so the flow direction arrow on
thesideofthevalvebodyindicatesthedirectionofthe
process flow.
Dimensions are shown in tables 12 and 13 and
figures 1 and 2.
2
D4 Valve
D103039X012
Valve Specifications
Product Bulletin
51.2:D4
November 2013
Available Actuation Configurations
Spring-To-Close Pneumatic
Flow Coefficients
See Fisher Catalog 12
Spring-To-Open Pneumatic
Electric
Valve Sizes and End Connection Styles
(1)
See table 3
Dimensions
See tables 12 and 13 and figures 1 and 2.
Face-to-face dimensions for flanged valves conform
to ISA-75.03 (CL150-600) and ANSI/ISA-75.16 Short
(CL900/1500)
Maximum Inlet Pressures and Temperatures
(1)
Flanged connections are consistent with the ASME
B16.34 pressure-temperature class, subject to
Material Temperature Capabilities for the Valve Body
Assembly (see following specification). For NPT end
connections, the valve body rating is 4250 psig.
Maximum Pressure Drops
(1)
Seetables7,8,9,10,and11
Shutoff Classification per ANSI/FCI 70-2
and IEC 60534-4
Class IV
Flow Characteristic
Equal percentage
Flow Direction
Flow up only
1. The pressure or temperature limits in the referenced tables andany applicable ASME code limitations should not be exceeded.
Port Diameters
See table 3
Construction Materials
Valve Body and Bonnet: ASME SA 352 LCC
Valve Plug and Seat: See table 5
Valve Stem: S20910
Actuator O-Rings: (HNBR) Hydrogenated Nitrile
Bonnet O-Ring:
Standard: HNBR
Optional: Fluorocarbon
Packing: PTFE/Carbon PTFE
Packing Springs: N07718
Packing Retainer: S17400
Actuator Diaphragm: Chloroprene
Actuator Spring: Painted steel
Seat Ring Gasket: S31600 (316 SST)
Spring Cover (Fail Up): PVC
Valve Plug Travel
19 mm (0.75 inch)
Valve Plug Style
Micro-Form valve plug
Material Temperature Capabilities
Valve Body Assembly:
Standard Bonnet O
(-40 to 275F)
Optional Bonnet Fluorocarbon O
-23 to 204C(-10to400F)
-
Ring: -40 to 135C
-
Ring:
3
Product Bulletin
51.2:D4
November 2013
Actuator Specifications
D4 Valve
D103039X012
ELECTRIC ACTUATOR
Material Temperature Capabilities
Electric Actuator Assembly:
-20 to 70C(-4to158F) ambient
(1)
Electromagnetic Compatibility
Meets EN 61326-1 (First Edition)
Immunity: Industrial locations per table 2 of EN
61326-1 Standard. Performance is shown in table 2
Emmissions: Class A
ISM Equipment Rating: Group 1, Class A
Available Electric Actuator Configurations
easy-Drive Electric On/Off
easy-Drive Electric Positioning
Power Requirements
12 or 24VDC, minimum 4 amp power supply required
(fuse to 5 amps)