Emerson Fisher easy-e EZ Data Sheet

easy-e Cryogenic Valves

D102189X012

Fisherr easy-et Cryogenic
Sliding-Stem Control Valves

Fisher easy-e cryogenic valves are globe-style,
single-port, valves featuring stainless steel
construction materials and fabricated extension
bonnets. Fisher ET-C and EWT-C valves are
pressure-balanced, whereastheFisherEZ-Cvalveisan
unbalanced design. These cryogenic valves are
designed to provide throttling or on-off control of
liquids and gases at cryogenic temperatures as low as

-198_C(-325_F).

When required, these rugged valves can reliably
provide tight shutoff for special applications within the
chemical and hydrocarbon processing industries, such
as certain liquefied natural gas services.

Product Bulletin

51.1:easy-e Cryogenic
August 2012

The high-capacity ET-C and EWT-C valves with
pressure-balanced trim allow the use of smaller,
lower-cost actuators, reducing installed costs in
high-pressure and high-flow-rate applications.

The easy-e Valve Family

Thesevalvesarepartoftheversatile easy-e family of
industrial control valves. Special features include:

 ET-C and EWT-C: Different cage/plug styles provide

particular flow characteristics for highly-specialized
applications. The standard cage comes in two
different flow characteristics:

J linear.

and

J equal percentage

W6370--1

Typical Fisher easy-e Cryogenic Valve with Extension

 EZ-C: Interchangeable, restricted-capacity trims and

full-sized trims match a variety of process flow
demands for highly-specialized applications. The
standard plug is designed with three different flow
characteristics:

J quick-opening.

Bonnet and 585C Actuator

J equal percentage, J linear, and

www.Fisher.com

Product Bulletin

51.1:easy-e Cryogenic
August 2012

easy-e Cryogenic Valves

D102189X012

Features

 Cryogenic Spring-Loaded Seal Ring–The seal ring

and associated valve parts in the ET-C and EWT-C
valves are specifically designed and manufactured
for excellent performance at low temperatures.

 Stable Control–Rugged cage guiding in the ET-C

and EWT-C valves stabilizes the valve plug at all
points in its travel to reduce vibration, mechanical
noise, and the need for hydraulic snubbers.

 Cost Effective Operation and Economical

Maintenance–Increased wear resistance of
hardened stainless steel trim means long-lasting
service. Balanced valve plug construction in the
ET-C and EWT-C valves permits use of smaller,
lower-cost Fisher actuators.

 Piping Economy–Expanded end connections of EW

Series valves may reduce the need for line swages
while accommodating oversized piping
arrangements used to limit fluid flow velocities.

 Cryogenic Design Features–The stainless steel valve

body and bonnet with fabricated extension are
designed to meet low temperature requirements.
Theuniquemetal-to-metal seat design provides
repeatable tight shutoff, reducing maintenance
costs.

 Rugged Metal Seat–The metal-to-metal seat is

designed and manufactured to provide long-lasting,
reliable, tight shutoff at both ambient and
cryogenic temperatures without the need for
periodic lapping. This reduces the need for soft
seats, even in applications with stringent shutoff
requirements.

 Fugitive Emission Protection–The optional

ENVIRO-SEALt packing systems provide an
improved stem seal to help prevent the loss of
valuable or hazardous process fluids, and keep
emissions below the EPA limit of 100 ppm.
Additionally, these live-loaded packing systems can
provide long life and reliability at low temperatures
to help reduce maintenance costs and downtime.

 Thoroughly Tested–Extensive cryogenic testing

during the development of the valve design reduces
the need for expensive cold testing for most
applications, which results in quicker delivery and
greater value.

 Easy Maintenance–Quick-change trim, with a

clamped-in seat ring, reduces the disassembly/
assembly time. The valve body can stay in the
pipeline during removal of trim parts for inspection
or maintenance.

 Sour Service Capability–For NACE applications,

consult your Emerson Process Management sales
office.

Contents

Features 2.....................................

Specifications 3................................

Tables

ET-C and EWT-C Typical Trim Materials 5..........

EZ-C Typical Combinations of Metal Trim Parts 5...

Maximum Allowable Actuator Thrust 5...........

2

ET-C and EWT-C Port Diameters,

Valve Plug Travel, Stem and Yoke Diameters 8...

EZ-C Port Diameters, Travel, Valve Plug and Stem

and Yoke Diameters 8.......................

Bolting Materials 8............................

EZ-C Maximum Allowable Pressure Drop 9.........

Dimensions 10.................................

easy-e Cryogenic Valves

D102189X012

Specifications

Product Bulletin

51.1:easy-e Cryogenic
August 2012

Available Configurations

ET-C: Single-port, globe-style control valve with cage
guiding, balanced valve plug, and
push-down-to-close valve plug action (figure 1)
EWT-C: Single-port, globe-style control valve with
cage guiding, balanced valve plug,
push-down-to-close valve plug action, and with
expanded end connections (figure 1)
EZ-C: Single-port, globe-style control valve with
post-guiding, unbalanced valve plug, and
push-down-to-close valve plug action (figure 2)

Valve Sizes

ET-C:

J NPS 3, J 4, J 6, and J 8

EWT-C:

J NPS 6X4

(1)

, J 8X4, J 8X6, J 12X6, and

J 10X8

EZ-C:

J NPS 1, J 1-1/2, J 2, J 3, and J 4

End Connection Styles

(2)

CL150, 300, or 600 raised-face flanges per J ASME
B16.5,

J EN 1092-1/B

Maximum Inlet Pressure

(2)

Consistent with J CL150 and J CL300
pressure-temperature ratings per ASME B16.34

J CL600 valves with B8M Class 2 bolting are

consistent with CL600 pressure-temperature ratings
per ASME B16.34 except as shown below:

MAXIMUM INLET

VALVE

EZ-C

ET-C and EWT-C

VALVE SIZE,

NPS

1 77 1110
2 83 1200
3 94 1370
3 94 1370

6, 8 x 6,

12 x6

8, 10 x 8 96 1390

PRESSURE

at 38_C (100_F)

Bar Psig

75 1085

J CL600 valves with optional S20910 (XM-19)

bolting are consistent with CL600
pressure-temperature ratings per ASME B16.34

Trim Material

See tables 1 and 2

Shutoff Classifications Per ANSI/FCI 70-2 and IEC
60534-4

ET-C and EWT-C.

Metal Seat:.

J ClassIVisstandard
J ClassVAirTestisoptional

(Test will be 50 psid air)

(6)

.

J Class VI (Consult your Emerson Process

Management sales office)

Composition Seat:.

J Standard air test is standard
J ClassVIisoptional

EZ-C.

Metal Seat:.

J ClassIVisstandard
J ClassVIisoptional

Maximum Actuator Thrust

See table 3

Conformance to Customer Specifications

ET-C with metal seats and EZ-C valves successfully
passed type approval testing per SIPM (Shell)
specification T-2.253.730

Flow Characteristics

ET-C, EWT-C, and EZ-C.

J Equal percentage
J Linear

EZ-C Only.

J Quick-opening

Flow Direction

(5)

Maximum Pressure Drops

(2)

Same as maximum inlet pressure, except where
limited by spiral wound gasket for EZ-C
(see tables 7 and 8)

ET-C and EWT-C.
Normallydownforlinearandequal percentage trims.
Flow up for Whisper Trimt.Seefigure1.
EZ-C.
Up through the seat ring only. See figure 2

(Continued)

3

Product Bulletin

51.1:easy-e Cryogenic
August 2012

Specifications (Continued)

easy-e Cryogenic Valves

D102189X012

Standard Construction Materials

Valve Body and Bonnet: CF8M (316 SST)
Body-Bonnet Bolting: SA-193-B8M Class 2 studs

Optional Materials.

J Double PTFE V-ring and
J Graphite ribbon/filament

with SA-194-8M nuts (see table 6)
Bonnet Bushing: S31600/filled PTFE
Flat Sheet Gaskets: S31600/graphite
Spiral Wound Gasket: N06600/graphite
PackingStudsandNuts:S31600 SST
Seal Ring (ET-C and EWT-C): UHMWPE

(3)

with R30003
spring
Back-UpRing(ET-CandEWT-C):S31600 (316 SST)
Retaining Ring (ET-C and EWT-C): S30200 (302 SST)
Load Ring (for ET-C, NPS 8 and for EWT-C, NPS 10 x 8
only): N07718
Packing Follower, Lantern Ring, Packing Spring

(4)

Packing Box Ring: S31600 SST

Material Temperature Capabilities

(2)

ET-C and EWT-C

-198 to 66_C(-325to150_F)
EZ-C

-198 to 149_C (-325 to 300_F)

and

ENVIRO-SEAL Packing Systems: See figure 5

Packing Material:

J PTFE V-ring and J Graphite ULF

See Bulletin 59.1:061, ENVIRO-SEAL Packing Systems
for Sliding-Stem Valves, for more information

Approximate Weights (CL600 Valves)

ET-C:.

NPS 3: 51 kg (135 lb)
NPS 4: 95 kg (210 lb)
NPS 6: 211 kg (465 lb)
NPS 8: 372 kg (820 lb)

EWT-C:.

NPS 6X4: 200 kg (440 lb)
NPS 8X4: 277 kg (610 lb)
NPS 8X6: 318 kg (700 lb)
NPS 12X6: 730 kg (1610 lb)
NPS 10X8: 753 kg (1660 lb)

Bonnet Extension Length

See figures 3 and 4 for standard valve dimensions

EZ-C:.

NPS 1: 15 kg (33 lb)
NPS 1-1/2: 23 kg (48 lb)

Flow Coefficients and Noise Level Prediction

See Catalog 12

NPS 2: 41 kg (90 lb)
NPS 3: 60 kg (130 lb)
NPS 4: 95 kg (210 lb)

Port Diameters, Plug Travel, Yoke Boss, and Stem
Diameter

See tables 4 and 5

Options

ET-C and EWT-C:

J Whisper Trim III and WhisperFlot

trim for aerodynamic noise attenuation, and

Packing Arrangements

Standard Material.

J Single PTFE V-ring. See figures 1 and 2

1. Valve size number is end connection sizeby normal trim s ize. For example, anNPS 6X4 EWT-C valvehas NPS 6 endc onnections with NPS 4trim (see table 4).

2. Do not exceed the pressure or temperature limits in thisbulletin, and any applicable code limitations.

3. UHMWPE stands for ultra high molecular weight polyethylene.

4. A spring is used only with PTFE V-ring packing. Alantern rings replace the spring in other packing arrangements.

5. Down is in through the cage and out the seatring (see figure 1).

6. Class V shutoff cannot be performed with water. The residual trapped moisture from testingwith water can cause valve and trim damage fromthe ice crystals formed at belowfreezing
service temperatures.

J Cavitrolt III cages for liquid cavitation protection

are available. Contact your Emerson Process
Management sales office for information
EZ-C:

J Micro-Flute and J Micro-Flow trim

4