GE Becker HPP-5, Installation And Maintenance Manual

Becker HPP-5 High Pressure Positioner Maintenance and Operation Manual  |  8

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Model HPP-5 Single-Acting Positioner Annual Maintenance Checklist

1� ________  Soap test all diaphragm mating surfaces to check for leaks�

2� ________   Replace rubber goods using Becker Model HPP-5 Single-Acting Positioner Repair Kit (Part # 30-9601) if             

necessary� 

3� ________   Confirm power gas supply pressure is correct� Refer to original GE invoice paperwork for    

proper power gas setting�

4� ________  Observe operation of gages and replace if defective�

5� ________   Check integrity of HPP-5 positioner seats� Varying input signal 1 psig should send one cylinder  

output gauge to full power gas� Refer to Procedure 7, page 5�

6� ________   Check response of HPP-5 positioner� Varying input signal 1/4 psig should produce cylinder  

output gauge differential equal to 40 percent of power gas� Refer to Procedures 6-8, page 5� 

7� ________  Check range and bias of HPP-5 positioner and adjust if necessary� Refer to page 6�

8� ________   Inspect and verify proper operation of all HPP-5 positioner accessories� Refer to technical  

manual included with each specific instrumentation accessory for further instruction�

NOTE: It is not necessary to replace any rubber goods in Becker instrumentation or instrumentation accessories on a regular basis� 

However, common practice suggests that replacement of rubber goods on a five-year cycle basis provides adequate preventative 

maintenance�

Parts Ordering

The following is provided to allow the ordering of replacement parts� Please specify the Becker instrument serial 

number when ordering parts (this can be found on the stainless steel tab attached to the pilot by the 7/16 hex 

head cap screws� If the instrument was supplied as a complete valve regulator package, the stainless tag attached 

to the actuator piston also can provide the serial number�

Key

Description

Part No.

1 

Pilot base 

30-7005

2 

Lexan Cover 

25-1034

3 

Adjusting Drum 

35-1520

4 

Washer 

25-1016

5 

Inside piston 

35-1507

6 

Orifice Assembly 

35-1015

7 

Seat Cover 

35-1519

8 

1/2-20 Jam Nut 

98-3056

9 

Beam Adjusting Drum 

25-1124

10 

Diaphragm 

25-1213

13 

1/8 Roll Pin SS 

98-2950

14 

8-32 x 1” SHCS 

98-3144

15 

Beam Block 

25-1086

16 

Outside piston 

25-1018

17 

3/16 x 1/2 Roll Pin SS 

98-3089

18 

1/4-20 x 2-1/2 HHCS 

98-3180

19 

Gauge Manifold 

35-1013

20 

O-Ring –012 

95-2615

21 

1/4-28 Jam Nut 

98-3214

22 

Diaphragm w/ Con-
volute 

25-1027

23 

Beam Spacer 

30-7055

24 

1/4-20 x 1” HHCS 

98-2579

25 

3-15 pressure car-
tridge 

25-1082

Key

Description

Part No.

  26 

5-40 x 1/4 SHCS 

98-2629

27 

1/4-20 x 3/4 SHCS 

98-3137

28 

8-32 x 1/2 SHCS 

98-2614

29 

Pilot Post S�S� 

35-1521

30 

Double pilot Body 

35-1504

31 

Valve Adjusting Screw 

35-1517

32 

Balance valve as-
sembly 

35-1510

33 

Seat assembly 

01-7082

34 

S�S� Control tag 

25-1061

35 

10-32 x 3/8 FHMS 

98-2684

36 

#10 Lockwasher 

98-3178

37 

Strainer for Balance 
valve 

35-1559

38 

Seat Spacer 

35-1526

39 

Beam 

25-1084

Seal Kit

A seal kit containing diaphragms, o-rings, and seats, for the HPP-5 

positioner is available directly from GE� Simply contact GE and 

order part number 30-9601�