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526 API
Leser 526 API User Manual
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Manual
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LESER Global Standard
Assembly instruc
tions for type 526 AP
I
LGS 4104
Page
1/
45
disclosure cat.:
II
proofread:
SSt
published date:
06/14/18
effect. date:
05/18
author:
Nieh
released by:
KU
W
replaces:
initial
status:
Published
resp. depart.:
IE
date of release:
06/14/18
revision No.:
2
doc. type:
LGS
change rep. No.:
NA
retention period:
10
protected
Type 526 API
2
Table of Contents
Table of Contents
2
Purpose
2
Scope
2
References
3
Disclaimer
3
Qualified Fitting Personnel
3
General Information
3
General Illustration
4
Preparation for Valve Assembly
5
Emboss the Punch Numbers (if Requested in the Order)
5
Assembly of Type 526
5
Assembly of the Nozzle and Blow down Ring
5
Screw the Studs into the Body
7
Installation of the Locking Screw and Screw Plug
7
Assembly of Disc Assembly
9
Assembly of Spindle/Disc Assembly
13
Assembly of the Bonnet
24
Determination and Installation of the Lift Stopper
25
Assembly of the Adjusting Screw
28
Adjusting the Set Pressure
30
Testing the Seat Tightness P12
31
Assembly of the Cap / Lever
31
Assembly of the Lift Indicator
38
Installation of the Test Gag (Possible for H2 and H4)
40
Installation of the Different O-Ring Dampers
41
Adjusting the Set Pressure
45
Testing the Seal Tightness of the Back Seal P21
45
Sealing the Valve
45
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Leser 526 API Specifications
General
Standard
API 526
Connection Type
Flanged
Type
Safety Valve
Material
Stainless Steel, Carbon Steel
Size Range
1" to 8"
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