Type Ezr Installation; Main Valve Minimum Differential Pressures - Fisher EZR Instruction Manual

Pressure reducing regulator with 161ay, 161eb series pilot and type 112 restrictor

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Instruction manual (20 pages)

Table Of Contents

Table of Contents

MAIN VALVE

MAIN SPRING PART

BODY SIZE,

NUMBER AND

NPS (DN)

COLOR CODE

19B2400X012, Light Blue

1 and 1-1/4 x 1

GE12727X012, Black

(25 and 32 x 25)

19B2401X012,

Black with White Stripe

19B2400X012, Light Blue

19B2401X012,

2 x 1 (50 x 25)

Black with White Stripe

GE12501X012,

Red Stripe

19B0951X012, Yellow

18B2126X012, Green

2 (50)

18B5955X012, Red

GE05504X012, Purple

T14184T0012, Yellow

3 (80)

19B0781X012, Light Blue

19B0782X012, Black

T14184T0012, Yellow

4, 6 x 4, and, 8 x 4

(100, 150 x 100,

18B8501X012, Green

and 200 x 100)

18B8502X012, Red

19B0364X012, Yellow

6, 8 x 6, and

12 x 6

(150, 200 x 150,

19B0366X012, Green

and 300 x 150)

19B0365X012, Red

GE09393X012, Yellow

8 (200)

GE09396X012, Green

GE09397X012, Red

1. See Table 1 for structural design ratings, Table 3 for pilot ratings, and Table 10 for maximum pressure ratings.

2. The white and yellow springs are only recommended for inlet pressures under 100 psig (6,9 bar).

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 500 psig (34,5 bar).

used as the pilot on single-stage pressure reducing

regulators or as the monitor pilot or working pilot in

wide-open monitor systems. The Type PRX has a

double diaphragm which provides increased accuracy

and sensitivity, an integral restrictor adjustment which

allows adjustable opening and closing speeds, and

a damper adjustment which adjusts inlet pressure

variability and loading pressure oscillations.

Type PRX/120-AP—Outlet pressure range of 435 to

1000 psig (30,0 to 69,0 bar). The Type PRX/120-AP

can be used as the pilot on single-stage pressure

reducing regulators, as the monitor pilot or working

pilot in wide-open monitor systems, or as the working

pilot for monitoring and working regulators in the

working monitoring systems.

Type PRX/125—Identical to the Type PRX/120 except

the restriction screw is removed. The Type PRX/125

can only be used as the monitor override pilot on

working monitor applications.

Table 4. Main Valve Minimum Differential Pressures

DIAPhRAGM

MATERIAL

17E68 and 17E88

17E97

17E68 and 17E88

17E88 and 17E97

(3)

17E68 and 17E88

17E97

17E68 and 17E88

17E97

(3)

17E68 and 17E88

(2)

17E97

17E68 and 17E88

(3)

17E88 and 17E97

(3)

17E68, 17E88, and 17E97

(2)

17E97

17E68 and 17E88

17E88 and 17E97

(3)

17E68, 17E88, and 17E97

(2)

17E97

17E68 and 17E88

17E88 and 17E97

(3)

17E97

(2)

17E88

17E97

17E88

17E88 and 17E97

(3)

(2)

17E97

(3)

MINIMUM DIFFERENTIAL, PERCENT OF CAGE CAPACITY, PSID (bar d)

FOR 90% CAPACITY

100% Trim

60% Trim

30% Trim

24 (1,7)

29 (2,0)

31 (2,2)

35 (2,5)

38 (2,7)

42 (2,9)

30 (2,1)

35 (2,4)

39 (2,7)

43 (3,0)

50 (3,4)

56 (3,9)

24 (1,7)

29 (2,0)

31 (2,2)

43 (3,0)

50 (3,4)

56 (3,9)

43 (3,0)

50 (3,4)

56 (3,9)

68 (4,7)

73 (5,0)

88 (6,1)

12 (0,83)

15 (1,0)

24 (1,7)

25 (1,7)

26 (1,8)

18 (1,2)

20 (1,4)

22 (1,5)

29 (2,0)

31 (2,1)

16 (1,1)

19 (1,3)

24 (1,7)

23 (1,6)

21 (1,5)

22 (1,5)

28 (1,9)

32 (2,2)

33 (2,3)

43 (3,0)

10 (0,69)

12 (0,83)

14 (0,97)

16 (1,1)

17 (1,2)

21 (1,5)

16 (1,1)

17 (1,2)

20 (1,4)

21 (1,5)

24 (1,7)

26 (1,8)

10 (0,69)

11 (0,76)

14 (0,97)

10 (0,69)

13 (0,90)

14 (0,97)

22 (1,5)

17 (1,2)

21 (1,5)

23 (1,6)

29 (2,0)

16 (1,1)

20 (1,4)

- - - -

26 (1,8)

Type PRX/125-AP—Identical to the Type PRX/120-AP

except the restriction screw is removed. The

Type PRX/125-AP can only be used as the monitor

override pilot on working monitor applications.

For applications requiring extremely

tight control, using a Type 161AYM or

161EBM monitor pilot will increase the

accuracy of the regulator.