Parker A4AL-DN Manual Download Page 5

Refrigerating Specialties Division

5

Item Description

1

Seal Cap

2

Gasket, Seal Cap

3

Nut, Stuffing Box

4

Packing Ring

5

Packing Washer

6

Adjusting Stem

8

Bonnet

9

Nameplate

10

Screw, Name Plate

11

Screw, Bonnet

12

Spring Rest, Upper

13

Spring, Range

14

Spring Rest, Lower

15

Diaphragm Follower

16

Gasket, Bonnet

17

Diaphragm

18

Seat, Pilot

19

Gasket, Adapter

20

Flg Ring-tube Asm

27

Gauge Port Pipe Plug

28

Adapter, Body

29

Gasket, Body

30

Piston-Stem

31

Screw, Body

32

Body

33

Throttling Plug Asm

34

Spring, Closing

35

Dirt Wiper Retainer

36

Dirt Wiper

37

Seal, Bottom Cap

38

Bottom Cap

39

Screw, Bottom Cap

40

Packing Washer

41

Packing Ring

42

Stuffing Box Nut

43

Gasket, Seal Cap

44

Seal Cap

45

Gasket, Flange

Summary of Contents for A4AL-DN

Page 1: ...s All A4AL Regulators are pilot operated using upstream pressure for the opening force and require a minimum 2 psi 0 14 bar pressure drop to fully open These valves are generally ordered with close co...

Page 2: ...r the system has been in operation for a while and make any minor corrections neces sary Installation All regulators are packed for maximum protec tion Unpack carefully check the carton to make sure a...

Page 3: ...l the flats onthestembarelyprotrudefromthestuffingbox nut Push Piston 30 down against the spring force The piston should move freely down and be returned by the spring force If the piston is jammed or...

Page 4: ...g must be replaced Check other system components for proper op eration Check hand valves in the system to make sure they are open or closed as required and the system is receiving liquid or gas as the...

Page 5: ...Spring Rest Lower 15 Diaphragm Follower 16 Gasket Bonnet 17 Diaphragm 18 Seat Pilot 19 Gasket Adapter 20 Flg Ring tube Asm 27 Gauge Port Pipe Plug 28 Adapter Body 29 Gasket Body 30 Piston Stem 31 Scre...

Page 6: ...BOTTOM A4A S4A 1 5 8 to 2 1 2 DUCTILE IRON GGG 40 3 BONNET A4W DUCTILE IRON GGG 40 3 COMPONENT DESCRIPTION MATERIAL Kv VOLUME BODY 2 A4A DN DUCTILE IRON GGG 40 3 42 4 1 61 L ADAPTER 2 A4A DN DUCTILE...

Page 7: ...A43P 414 16 3 432 17 0 485 19 1 505 19 9 620 24 4 676 26 6 C 164 6 2 203 8 0 251 9 9 252 9 9 311 12 2 359 14 1 G A4P A4L 244 9 6 248 9 8 287 11 3 302 11 9 324 12 8 361 14 2 A43P 266 10 5 270 10 7 308...

Page 8: ...me for Refrigerating Specialties any other liability in con nection with any of it products SYMPTOM PROBABLE REASON CORRECTION Regulator does not shut off flow Diaphragm or seat dirty damaged or froze...

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