Fisher EZR Instruction Manual page 14

Type EZR
Table 10. Main Valve Maximum Pressure Ratings, Diaphragm Selection Information, and Main Spring Selection
BODY SIZE, DIAPhRAGM
NPS (DN) MATERIAL
17E68 Nitrile (NBR)
Low temperature
17E97 Nitrile (NBR) High
pressure and/or erosion
1 and 1-1/4 x 1
resistance
(25 and 32 x 25)
17E88 Fluorocarbon (FKM)
High aromatic hydrocarbon
content resistance
17E68 Nitrile (NBR)
Low temperature
17E97 Nitrile (NBR) High
pressure and/or erosion
2 x 1 (50 x 25)
resistance
17E88 Fluorocarbon (FKM)
High aromatic hydrocarbon
content resistance
17E68 Nitrile (NBR)
Low temperature
17E97 Nitrile (NBR) High
pressure and/or erosion
2 (50)
resistance
17E88 Fluorocarbon (FKM)
High aromatic hydrocarbon
content resistance
17E68 Nitrile (NBR)
Low temperature
17E97 Nitrile (NBR)
High-pressure and/or
3 (80)
erosion resistance
17E88 Fluorocarbon (FKM)
High aromatic hydrocarbon
content resistance
17E68 Nitrile (NBR)
Low temperature
17E97 Nitrile (NBR)
4, 6 x 4,
High pressure and/or
and 8 x 4
erosion resistance
(100, 150 x 100,
and 200 x 100)
17E88 Fluorocarbon (FKM)
High aromatic hydrocarbon
content resistance
17E97 Nitrile (NBR)
High pressure and/or
6, 8 x 6,
erosion resistance
and 12 x 6
(150, 200 x 150,
17E88 Fluorocarbon (FKM)
and 300 x 150)
High aromatic hydrocarbon
content resistance
17E97 Nitrile (NBR)
8 (200) High pressure and/or
erosion resistance
1. See Table 1 for main valve structural design ratings and Table 3 for pilot ratings.
2. The red, black, purple, red stripe, and black with white stripe springs are only recommended for applications where the maximum inlet pressure can exceed 500 psig (34,5 bar).
3. For differential pressures above 400 psid (27,6 bar d) diaphragm temperatures are limited to 150°F (66°C).
4. These are recommendations that provide the best regulator performance for a typical application. Please contact your local Sales Office for further information if a deviation
from the standard recommendations is required.
14
MAXIMUM
MAXIMUM
OPERATInG
OPERATInG InLET
DIFFERENTIAL
PRESSURE ,
(4)
PRESSURE
PSIG (bar)
PSID (bar d)
100 (6,9) 100 (6,9)
460 (31,7) 400 (27,6)
500 (34,5) 500 (34,5)
1050 (72,4) 800 (55,2)
100 (6,9) 100 (6,9)
500 (34,5) 500 (34,5)
750 (51,7) 500 (34,5)
100 (6,9) 100 (6,9)
360 (24,8) 300 (20,7)
500 (34,5) 500 (34,5)
1050 (72,4) 800 (55,2)
100 (6,9) 100 (6,9)
750 (51,7) 500 (34,5)
100 (6,9) 100 (6,9)
460 (31,7) 400 (27,6)
500 (34,5) 500 (34,5)
1050 (72,4) 800 (55,2)
100 (6,9) 100 (6,9)
500 (34,5) 500 (34,5)
750 (51,7) 500 (34,5)
100 (6,9) 100 (6,9)
360 (24,8) 300 (20,7)
500 (34,5) 500 (34,5)
1050 (72,4) 800 (55,2)
100 (6,9) 100 (6,9)
500 (34,5) 500 (34,5)
750 (51,7) 500 (34,5)
100 (6,9) 100 (6,9)
360 (24,8) 300 (20,7)
100 (6,9) 100 (6,9)
500 (34,5) 500 (34,5)
1050 (72,4) 800 (55,2)
100 (6,9) 100 (6,9)
500 (34,5) 500 (34,5)
750 (51,7) 500 (34,5)
100 (6,9) 100 (6,9)
500 (34,5) 500 (34,5)
1050 (72,4) 800 (55,2)
100 (6,9) 100 (6,9)
500 (34,5) 500 (34,5)
750 (51,7) 500 (34,5)
100 (6,9) 100 (6,9)
500 (34,5) 500 (34,5)
1050 (72,4) 800 (55,2)
MAXIMUM
EMERGENCY INLET
MAIN SPRING
AND DIFFERENTIAL
COLOR CODE
, PRESSURE,
(4)
PSID (bar d)
100 (6,9)
460 (31,7)
1050 (72,4)
Black with White
1050 (72,4)
100 (6,9)
750 (51,7)
(3)
Black with White
750 (51,7)
(3)
100 (6,9)
Black with White
360 (24,8)
Black with White
500 (34,5)
1050 (72,4)
100 (6,9)
Black with White
750 (51,7)
(3)
100 (6,9)
460 (31,7)
1050 (72,4)
1050 (72,4) Red
100 (6,9)
750 (51,7)
(3)
750 (51,7) Red
(3)
100 (6,9)
500 (34,5)
1050 (72,4)
1050 (72,4)
100 (6,9)
750 (51,7)
(3)
750 (51,7)
(3)
100 (6,9)
500 (34,5)
100 (6,9)
1050 (72,4)
1050 (72,4)
100 (6,9)
750 (51,7)
(3)
750 (51,7)
(3)
100 (6,9)
1050 (72,4)
1050 (72,4)
100 (6,9)
750 (51,7)
(3)
750 (51,7)
(3)
100 (6,9)
1050 (72,4)
1050 (72,4)
(1)
DIAPhRAGM
DESIGNATION
Light Blue
Black
Black
Stripe
(2)
Light Blue
Black
Stripe
(2)
Light Blue
Stripe
Stripe
Red Stripe
(2)
Light Blue
Stripe
Yellow
Green
Green
or Purple
(2) (2)
Yellow
Green
or Purple
(2) (2)
130
Yellow
Light Blue
Light Blue
Black
(2)
Yellow
Light Blue
Black
(2)
Yellow
Green
Yellow
Green
Red
(2)
Yellow
Green
Red
(2)
Yellow
Green
Red
(2)
Yellow
Green
Red
(2)
Yellow
Green
Red
(2)