A. Basic Guidelines
The following guidelines should be of assistance in developing a meaningful
replacement parts plan.
A. The total number of valves in service should be classified by size, type and
temperature class.
B. The parts inventory should be classified by the tendency to require replacement.
Class I – Most frequently replaced
Class II – Less frequently replaced but critical in an emergency
C. Parts for the valve types covered by this manual are classified on Tables 23. “Qty.
parts” is the number of parts or sets which is recommended to achieve a desired
need-probability, as it relates to the total number of valves in service by size and
type. For example, a “Qty. parts” of 1 for “Valves in service” of 5 means that 1 part
should be stocked for each 5 valves of the same type and size in service.
D. When ordering replacement parts, please specify in accordance with applicable
nomenclature (see Figures 1 to 7). Be sure to state the size, type and serial
number of the valve for which parts are required. When ordering pilot parts
please state specific pilot type (39PV07, 37 etc.)
For ease of maintenance O-Ring kits are available for each main valve and pilot type.
A stock of these kits should be kept on hand for maximum operating efficiency. See
Tables 24, 25 and 26 in Section XXVI.
B. Identification and Ordering Essentials
Identification and Ordering Essentials When ordering service parts, please furnish the
following information to ensure receiving the correct replacement parts.
Identify valve by the following nameplate data (Refer Figures 84, 85 and 86):
A. Size
B. Type
C. Pressure/Temperature Class Rating
D. Serial Numbers from both main valve and pilot valve
Example:
Main Valve: 2910R-00-1-CC-MS-B-RF-GS-RS, TL12345-M
Pilot Valve: 39PV07-2-CC-B-GS-60, TL12346-P
How to verify Materials of O-Rings and Seals:
Kit coding indicates O-Ring and seals material.
Examples:
M0RK-70T
006
PSGK - 31B
XXIV. Replacement Parts Planning
Always use appropriate
restoration
procedures.
Do not interchange
parts from one valve
to another.
T
Teflon
B
Buna N
E
Ethylene / Propylene
V
Viton
K
Kalrez
88 | BHGE
© 2018 Baker Hughes, a GE company. All Rights Reserved.