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Table 3.

 Main Valve Minimum Differential Pressures

(1)

17E68 NITRILE (NBR)

17E97

(1)

 NITRILE (NBR)

17E88 FLUOROCARBON (FKM)

-28 to 66°C / -20 to 150°F 

-17 to 66°C / 0 to 150°F

-17 to 121°C / 0 to 250°F

(2)

1. The DN 150 / NPS 6, 17E97 diaphragm will perform in gas temperatures as low as -29°C / -20°F.

2. For differential pressures above 27.6 bar / 400 psig diaphragm temperature is limited to 66°C / 150°F.

Table 4.

 Temperature Capabilities

MAIN VALVE  

BODY SIZE

MAIN SPRING PART 

NUMBER AND 

COLOR CODE

DIAPHRAGM 

MATERIAL

MINIMUM DIFFERENTIAL, PERCENT OF CAGE CAPACITY

FOR 90% CAPACITY

FOR 100% CAPACITY

100% Trim

60% Trim

30% Trim

100% Trim

60% Trim

30% Trim

DN

NPS

bar

psi

bar

psi

bar

psi

bar

psi

bar

psi

bar

psi

25

1

19B2400X012, Light Blue

17E68 and 17E88

1.7

24

2.0

29

2.2

31

1.7

24

2.2

31

2.8

40

GE12727X012, Black

17E97

2.5

35

2.7

38

2.9

42

2.5

35

2.7

39

3.6

52

17E68 and 17E88

2.1

30

2.4

35

2.7

39

2.1

30

2.5

36

3.6

52

19B2401X012, 

Black with White Stripe

(3)

17E88 and 17E97

3.0

43

3.4

50

3.9

56

3.0

43

3.7

53

4.7

68

50

2

19B0951X012, Yellow

(2)

17E68 and 17E88

0.83

12

1.0

15

1.0

15

0.83

12

1.7

25

1.4

20

18B2126X012, Green

17E97

1.7

24

1.7

25

1.8

26

1.7

24

2.1

30

2.6

37

17E68 and 17E88

1.2

18

1.4

20

1.5

22

1.3

19

1.8

26

1.9

28

18B5955X012, Red

(3)

GE05504X012, Purple

(3)

17E88 and 17E97

2.0

29

2.0

29

2.1

31

2.1

31

2.4

35

3.03

43

80

3

T14184T0012, Yellow

(2)

17E68 and 17E88

1.1

16

1.3

19

1.7

24

1.6

23

1.6

23

2.0

29

19B0781X012, Light Blue

17E97

1.6

23

1.6

23

1.6

23

1.6

23

1.6

23

1.7

25

17E68 and 17E88

1.5

21

1.5

22

1.9

28

1.9

28

1.9

28

2.3

33

19B0782X012, Black

(3)

17E88 and 17E97

2.2

32

2.3

33

3.0

43

2.6

38

2.6

38

3.4

50

100

4

T14184T0012, Yellow

(2)

17E68 and 17E88

0.69

10 

0.83

12 

0.97

14 

1.7

25 

1.7

25 

1.7

25 

18B8501X012, Green

17E97

1.1

16 

1.2

17 

1.5

21 

2.3

34 

2.3

34 

2.3

34 

17E68 and 17E88

1.1

16 

1.2

17 

1.4

20 

2.1

30 

2.1

30 

2.1

30 

18B8502X012, Red

(3)

17E88 and 17E97

1.5

21 

1.7

24 

1.8

26 

2.8

40 

2.8

40 

2.8

40 

150

6

19B0364X012, Yellow

(2)

17E97

0.69

10

0.76

11

0.97

14

0.83

12

1.1

16

1.1

16

17E88

0.69

10

0.90

13

0.90

13

0.83

12

1.5

21

1.5

21

19B0366X012, Green

17E97

0.97

14 

1.5

22 

1.5

22 

1.3

19 

2.0

29

2.0

29 

17E88

1.2

17

1.5

21

1.5

21

1.4

20

2.5

36

2.5

36

19B0365X012, Red

(3)

17E88 and 17E97

1.6

23 

2.0

29 

2.0

29 

2.1

30 

2.8

41 

2.8

41 

200

8

GE09393X012, Yellow

(2)

17E97 

1.1

16

- - - -

- - - -

1.3

19

- - - -

- - - -

GE09396X012, Green

1.4

20

1.6

23

GE09397X012, Red

(3)

1.8

26

2.1

30

1. See Table 1 for structural design ratings, Table 3 for pilot ratings and Table 6 for maximum pressure ratings.

2. The white and yellow springs are only recommended for inlet pressures under 6.9 bar / 100 psig.

3. The red, black, purple, red stripe and black with white stripe springs are only recommended for applications where the maximum inlet pressure can exceed 34.5 bar / 500 psig.

Adjustment

To change the set pressure, remove closing cap 

or loosen the locknut and turn the adjusting screw 

clockwise to increase set pressure or counterclockwise 

to decrease pressure. Monitor the set pressure with a 

test gauge during the adjustment. Replace closing cap 

or tighten the locknut to maintain the desired setting.

Taking Out of Service (Shutdown)

!

WARNING

To avoid personal injury resulting from 

sudden release of pressure, isolate the 

backpressure regulator from all pressure 

before attempting disassembly.

If pressure is introduced first to the 

main valve before the pilot, the main 

valve may go wide-open and subject the 

downstream system to full inlet pressure.

Type EZR Relief

3

Summary of Contents for Fisher EZR Relief

Page 1: ...of vented fluid that may have accumulated To prevent such injury or damage provide piping or tubing to vent the fluid to a safe well ventilated area or containment vessel Also when venting a hazardous fluid the piping or tubing should be located far enough away from any buildings or windows so to not create a further hazard and the vent opening should be protected against anything that could clog ...

Page 2: ... initial adjustment may be required to give the desired results With proper installation completed and relief valves properly adjusted slowly open the upstream and downstream shutoff valves if applicable MAIN VALVE BODY SIZE MAIN VALVE BODY MATERIAL END CONNECTION STYLE STRUCTURAL DESIGN RATING DN NPS bar psig 50 80 100 and 150 2 3 4 and 6 Cast Iron NPT NPS 2 DN 50 only 27 6 400 CL125 FF 13 8 200 ...

Page 3: ... T14184T0012 Yellow 2 17E68 and 17E88 0 69 10 0 83 12 0 97 14 1 7 25 1 7 25 1 7 25 18B8501X012 Green 17E97 1 1 16 1 2 17 1 5 21 2 3 34 2 3 34 2 3 34 17E68 and 17E88 1 1 16 1 2 17 1 4 20 2 1 30 2 1 30 2 1 30 18B8502X012 Red 3 17E88 and 17E97 1 5 21 1 7 24 1 8 26 2 8 40 2 8 40 2 8 40 150 6 19B0364X012 Yellow 2 17E97 0 69 10 0 76 11 0 97 14 0 83 12 1 1 16 1 1 16 17E88 0 69 10 0 90 13 0 90 13 0 83 12 ...

Page 4: ...c hydrocarbon content resistance 6 9 100 6 9 100 6 9 100 Yellow 34 5 500 34 5 3 500 51 7 750 Light Blue 51 7 750 34 5 3 500 51 7 750 Black 2 100 4 17E68 Nitrile NBR Low temperature 6 9 100 6 9 100 6 9 100 Yellow 24 8 360 20 7 300 34 5 500 Green 17E97 Nitrile NBR High pressure and or erosion resistance 34 5 500 34 5 500 72 4 1050 Green 72 4 1050 55 2 800 72 4 1050 Red 2 17E88 Fluorocarbon FKM High ...

Page 5: ...Bushing DN 150 and 200 NPS 6 and 8 only 6358 Series Pilots Key Description 1 Pilot Body 2 Spring Case 3 Body Plug 4 Valve Plug 5 Diaphragm Assembly 6 Connector Cap 7 Control Spring 8 Spring Seat 9 Stem Guide 10 Adjusting Screw 11 Locknut 12 Closing Cap 13 Body Plug O ring 14 Valve Spring 15 O ring Type 6358EBH only 16 Vent Assembly Type Y602X1 A12 17 Machine Screw 18 O ring Types 6358EB and 6358EB...

Page 6: ...R Main Valve with Travel Indicator TOP PLUG KEY 5 O RING KEY 14 DN 25 NPS 1 DIAPHRAGM ASSEMBLY O RING KEY 70 DIAPHRAGM KEY 9 BOTTOM PLUG KEY 11 O RING KEY 10 LOCK WASHER KEY 130 SOCKET HEAD SCREW KEY 129 19B2408 8 7 5 11 10 70 14 2 17 19 20 21 22 15 4 6 18 16 64 12 28 9 13 1 23 Type EZR Relief 6 ...

Page 7: ...OR VIEW A6920 2 Figure 2 Type EZR Travel Indicator Plug Option 19 3 48B2142_C 3 DN 25 50 80 AND 100 NPS 1 2 3 AND 4 BODY SIZES DN 150 NPS 6 BODY SIZE 6358 SERIES PILOT INTERIOR VIEW A6920 TYPE 6358EB PILOT INTERIOR VIEW B2620 2 10 12 11 2 6 14 20 16 4 1 13 8 18 5 38 9 36 37 16 3 7 12 10 19 8 6 5 14 9 37 3 13 1 4 20 16 36 7 2 11 Type EZR Relief 7 ...

Page 8: ... 811 8100 D102629X014 2002 2018 Emerson Process Management Regulator Technologies Inc All rights reserved 06 18 The Emerson logo is a trademark and service mark of Emerson Electric Co All other marks are the property of their prospective owners Fisher is a mark owned by Fisher Controls International LLC a business of Emerson Automation Solutions The contents of this publication are presented for i...

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