Data Sheet

YD and YS Valves
D100031X012
Product Bulletin
51.1:YD
June 2014
15
Table 7. Maximum Allowable Fisher YS (Converging Service) Shutoff Pressure Drops with 657 and 667 Actuators
(1)
PACKING TYPE ACTUATOR SIZE
NOMINAL (ACTUAL) AIR TO DIAPHRAGM, PSIG
(2)
3-15 (0-18) 6-30 (0-33) 3-40(0-43)
nP, PSID/(Bench Set, PSIG)/Spring Drawing Number
1.3125 Inch Port, Class IV Seat Leakage
Standard
Single or
Double PTFE
30
40
(6-12)
1F1767
75
(7-11)
(3)
1J1722
---
110
(8-24)
1J2581
180
(10-22)
1E7923
245
(12-20)
1F1768
315
(14-28)
1F7143
34
95
(5-13)
1E8053
145
(6-12)
1E8056
195
(7-11)
1F1771
245
(8-24)
1E8055
350
(10-22)
1E8058
450
(12-20)
1E8053
550
(14-28)
1E8054
ENVIRO-SEAL PTFE
30
25
(7-11)
(3)
1J1722
--- ---
60
(8-24)
1J2581
125
(10-22)
1E7923
195
(12-20)
1F1768
265
(14-28)
1F7143
34
40
(5-13)
1E8053
95
(6-12)
1E8056
145
(7-11)
1F1771
195
(8-24)
1E8055
300
(10-22)
1E8058
400
(12-20)
1E8053
500
(14-28)
1E8054
ENVIRO-SEAL
Graphite ULF
30 --- --- --- --- --- ---
45
(14-28)
1F7143
34 --- --- ---
80
(10-22)
1E8058
180
(12-20)
1E8053
---
285
(14-28)
1E8054
Graphite Ribbon/
Filament (CL300)
30 --- --- ---
10
(8-24)
1J2581
80
(10-22)
1E7923
150
(12-20)
1F1768
215
(14-28)
1F7143
34
45
(6-12)
1E8056
95
(7-11)
1F1771
---
145
(8-24)
1E8055
250
(10-22)
1E8058
350
(12-20)
1E8053
450
(14-28)
1E8054
2.3125 Inch Port, Class IV Seat Leakage
Standard
Single or
Double PTFE
40
12
(6-12)
1F1771
--- ---
28
(7-25)
1E8058
61
(9-24)
1E8057
78
(10-22)
1E8053
110
(12-30)
1E8058
45
38
(5-12)
1E8269
63
(6-11)
1F1773
---
113
(8-25)
1E8271
188
(11-22)
1E8272
213
(12-21)
1E8266
263
(14-28)
1E8265
ENVIRO-SEAL PTFE
40 --- --- ---
38
(9-24)
1E8057
55
(10-22)
1E8053
---
88
(12-30)
1E8058
45
15
(5-12)
1E8269
40
(6-11)
1F1773
---
90
(8-25)
1E8271
165
(11-22)
1E8272
190
(12-21)
1E8266
240
(14-28)
1E8265
ENVIRO-SEAL
Graphite ULF
45 --- --- ---
70
(11-22)
1E8272
95
(12-21)
1E8266
---
145
(14-28)
1E8265
46
18
(6-12)
1E8266
--- ---
55
(7-25)
1E8257
130
(9-24)
1E8267
240
(12-21)
1E8265
(667 Only)
315
(14-28)
1E8263
Graphite Ribbon/
Filament (CL300)
40 --- --- ---
24
(9-24)
1E8057
40
(10-22)
1E8053
---
73
(12-30)
1E8058
45
26
(6-11)
1F1773
--- ---
76
(8-25)
1E8271
151
(11-22)
1E8272
176
(12-21)
1E8266)
226
(14-28)
1E8265
-continued-