Replacement Parts Planning; Basic Guidelines; Identification And Ordering Essentials - Baker Hughes Consolidated 4900 Series Instruction Manual

XXIII. Replacement Parts Planning
A. Basic Guidelines
The following guidelines should be of assistance in developing a meaningful
replacement parts plan.
1. The total number of valves in service should be classified by size, type and
temperature class.
2. 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
3. Parts for the valve types covered by this manual are classified on Table
10. "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.
4. When ordering replacement parts, please specify in accordance with
applicable nomenclature (see Figures 1 to 8). 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 (49PV07, 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 11, 12 and 13.
B. 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:
a. Size
b. Type
c. Pressure/Temperature Class Rating
d. Serial Numbers from both main valve and pilot valve
Example:
Main Valve:
4910R-4-CC-DA-RF-GS, TL12345-M
Pilot Valve:
49PV07 -2-CC-B-GS, TL12346-P
How to Verify Material of O-Rings and Seals
Kit coding indicates O-Ring and seals material.
Examples:
MORK-70T006
PSGK-31B
© 2020 Baker Hughes Company. All rights reserved.
T = Teflon®
B=Buna N
E = Ethylene/Propylene
V = Viton
K = Kalrez
Always use
appropriate restoration
procedures.
Do not interchange
parts from one valve
to another.
Consolidated 4900 MPV Series POSRV Manual
| 77