Fisher ed User Manual

ED, ET, EZ, HP, HPA Valves w/ 657/667 Actuator

July 2010

3

Hardware Documents:

51.1:ED, Fisher ED, EAD, and EDR SlidingStem
Control Valves Bulletin:  D100017X012

Fisher ED and EAD easye

t Valves CL125 through

CL600 Instruction Manual:  D100390X012

51.1:ET, Fisher ET, EAT, and ETR SlidingStem
Control Valves Bulletin:  D100022X012

Fisher ET and EAT easye

t Valves CL125 through

CL600 Instruction Manual:  D100398X012

51.1:EZ, Fisher EZ SlidingStem Control Valve
Bulletin:  D100025X012

Fisher EZ easye

t Control Valve Instruction

Manual:  D100401X012

51.2:HP, Fisher HP Series Control Valves Bulletin:
D101635X012

Fisher HP and HPA Control Valves Instruction
Manual:  D101634X012

Guidelines/References:

D Safety Integrity Level Selection – Systematic

Methods Including Layer of Protection Analysis,
ISBN 1-55617-777-1, ISA

D Control System Safety Evaluation and

Reliability, 2nd Edition, ISBN 1-55617-638-8, ISA

D Safety Instrumented Systems Verification,

Practical Probabilistic Calculations, ISBN
1-55617-909-9, ISA

Functional Safety

D IEC 61508: 2000 Functional safety of

electrical/electronic/ programmable electronic
safety-related systems

D ANSI/ISA 84.00.01-2004 (IEC 61511 Mod.)

Functional Safety – Safety Instrumented Systems for
the Process Industry Sector

Fisher ED single-port valves (figure 1) have cage
guiding, quick-change trim, and balanced
push-down-to-close valve plug action. Valve
configurations are as follows:

ED--Globe-style valve with metal-to-metal seating for
all general applications over a wide variety of
pressure drops and temperatures.

EAD--Angle version of ED, used to facilitate piping
or in applications where a self-draining valve is
required.

Fisher ET single-port valves (figure 1) have cage
guiding, quick-change trim, and balanced
push-down-to-close valve plug action. Valve
configurations are as follows:

ET--Globe-style valve with metal-to-PTFE seating
(standard for all except Cavitrol III cages) for
stringent shutoff requirements, or metal-to-metal
seating (standard for Cavitrol III cages, optional for
all others) for higher temperatures.

EAT--Angle version of ET, used to facilitate piping or
in applications which require a self-draining valve.

Fisher EZ valves (figure 1) are globe-style with
integral end connections, post guiding, and
quick-change trim. These valves are used in
chemical or hydrocarbon processing applications or
in applications that require control of nonlubricating,
viscous, or other hard-to-handle fluids.

Fisher HP Series high-pressure globe and angle
valves (figure 1) have metal seats, cage guiding,
quick change trim, and push-down-to-close valve plug
action. HPD, HPAD, HPT, and HPAT valves use
balanced valve plugs. HPS and HPAS valves use an
unbalanced valve plug. To provide a seal between
the cage and a balanced valve plug, the HPD and
HPAD valve plugs use piston rings; the HPT and
HPAT valve plugs use a pressure-assisted seal ring.
A Whisper Trim cage can be used with an HPD,
HPAD, HPS, HPAS, HPT, or HPAT valve plug. A
Cavitrol III cage can be used with an HPS, HPAS,
HPT, or HPAT valve plug.