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Fisherr ENVIRO-SEAL™ Bellows Seal Bonnets

ENVIRO-SEAL bellows seal bonnets improve sealing

capabilities of Fisher valves and provide long life for

applications where emissions escaping from a valve

stem seal to the atmosphere cannot be tolerated. This

excellent stem sealing system is available for Fisher

easy-et valves (see the specifications table for

information on valve designs and sizes).

Corrosion resistance is excellent--the bellows is

available in either N06625 or N06022, and the bellows

is protected against direct impingement by the flow

stream. The mechanically formed bellows provides

high operating reliability and extended cycle life, and

the large annular area around the bellows optimizes

warming by the process fluid.

Features

 Excellent Sealing Capabilities are Factory

Tested–Every bellows seal is tested before leaving

the factory. Each bellows is mass spectrometer

tested to 1 X 10

cubic centimeters per second of

helium.

 Long Cycle Life–Cycle lives in excess of those shown

in tables 1, 2, 3, and 4 can be achieved with proper

use and maintenance.

 Easy Installation in Existing Valves–All parts needed

to install the system in existing valves are available

in a convenient kit.

 Rugged Construction–An anti-rotator pin helps

prevent accidental twisting and subsequent

damage and helps prevent stem blow out. A

full-length shroud protects the bellows against

damage during handling, inspection, or

maintenance. See the following figure.

 Purging/Monitoring Connections are

Standard–Two connections above the bellows

allow for purging or monitoring of bellows integrity.

ENVIRO-SEAL Bellows Detail

(Mounted on easy-e VALVE)

UPPER

BUSHING

W5800-2

PACKING

ANTI-ROTATOR

PURGE-MONITORING

CONNECTION

PROTECTIVE

SHROUD

BELLOWS

VALVE PLUG

CONNECTION

VALVE PLUG

ENVIRO-SEAL Bellows Seal

D101641X012

Product Bulletin

59.1:070

December 2012

Summary of content (8 pages)

PAGE 1
Product Bulletin ENVIRO-SEAL Bellows Seal 59.1:070 December 2012 D101641X012 Fisherr ENVIRO-SEAL™ Bellows Seal Bonnets ENVIRO-SEAL bellows seal bonnets improve sealing capabilities of Fisher valves and provide long life for applications where emissions escaping from a valve stem seal to the atmosphere cannot be tolerated. This excellent stem sealing system is available for Fisher easy-et valves (see the specifications table for information on valve designs and sizes).
PAGE 2
Product Bulletin ENVIRO-SEAL Bellows Seal 59.1:070 December 2012 D101641X012 Specifications Applicable Valve Designs NPS 1/2 through 4 Fisher CL125 through 600 Jeasy-e valves (for example, EAT, EZ, ETR, etc.),JYD, and JYS valves Cycle Life See tables 1, 2, 3, and 4 and the Cycle Life section. The bellows is available in Jone-ply or Jtwo-ply construction for higher pressures and longer cycle life Pressures and Temperatures(1) See tables 5 and 6.
PAGE 3
Product Bulletin ENVIRO-SEAL Bellows Seal 59.1:070 December 2012 D101641X012 Cycle Life ENVIRO-SEAL bellows are normally sold with the travel limited for optimum cycle life performance. Bellows may be operated at full valve travel at reduced cycle life. Bellows seal service life is affected by several factors, including pressure, temperature, and travel. The cycle life values listed in tables 1, 2, 3, and 4 are determined from experimental data and reflect a 99% confidence factor.
PAGE 4
Product Bulletin ENVIRO-SEAL Bellows Seal 59.1:070 December 2012 D101641X012 Table 3. Estimated Cycle Life for N06022 Bellows(1) at 10.3 Bar (150 Psig) and 38_C (100_F) VALVE SIZE, NPS 1/2, 3/4, 1, & 1-1/2 2 3 4 BELLOWS SEAL TRAVEL mm Inch mm Inch mm Inch mm Inch mm Inch mm Inch 3.6 0.14 4.6 0.19 6.4 0.28 9.7 0.38 14.2 0.56 19.1 0.
PAGE 5
Product Bulletin ENVIRO-SEAL Bellows Seal 59.1:070 December 2012 D101641X012 Table 5. Pressure-Temperature Rating for N06625 Bellows VALVE SIZE, NPS PRESSURE, BAR Temp., _C 38 93 149 204 260 316 371 427 1/2, 3/4, 1, 1-1/2, and 2 1 Ply 2 Ply 37.9 68.9 34.9 63.4 33.0 60.0 31.1 56.5 29.6 53.8 28.5 51.7 17.1 50.3 27.3 49.6 3&4 1 Ply 2 Ply 23.9 43.1 21.6 39.6 20.4 37.5 19.2 35.3 18.3 33.6 17.6 32.3 17.1 31.4 16.9 31.0 Temp.
PAGE 6
Product Bulletin ENVIRO-SEAL Bellows Seal 59.1:070 December 2012 D101641X012 Table 7. Flow Coefficients with ENVIRO-SEAL Bellows Seal and easy-e Valves VALVE DESIGN BELLOWS SEAL TRAVEL FULL-SIZE TRIM VALVE SIZE, NPS mm Inch Quick Opening Linear 1 1-1/2 2 3 4 14.2 14.2 22.2(1) 28.6 38.1(2) 0.56 0.56 0.88(1) 1.125 1.50(2) 21.5 40.4 74.7 152 243 17.8 32.5 65.1 126 192 1 1-1/2 2 3 4 14.2 14.2 22.2(1) 28.6 38.1(2) 0.56 0.56 0.88(1) 1.125 1.
PAGE 7
Product Bulletin ENVIRO-SEAL Bellows Seal 59.1:070 December 2012 D101641X012 Table 8. Dimensions for easy-e Valves easy-e VALVES VALVE SIZE, NPS Stem Diameter Inch mm Inch 9.5 3/8 320 12.59 1-1/2 9.5 3/8 317 12.47 2 12.7 1/2 383 15.09 3 12.7 1/2 517 20.34 4 12.7 1/2 541 21.28 1/2, 3/4, & 1 With New Valves Table 9. Dimensions for easy-e Valves VALVE STEM DIAMETER mm Inch 9.5 12.7 D mm ACTUATOR TYPE ACTUATOR SIZE 657 E 1.
PAGE 8
Product Bulletin ENVIRO-SEAL Bellows Seal 59.1:070 December 2012 D101641X012 Table 10.