Flowserve V-377 R4 Edward Valves - Manual (Page 50)

50
Flow Control Division
Edward Valves
Supplementary Repair Information
In analyzing valve trouble in the field, it is
important to consider the following factors:
1. Size of the valve.
2. Figure number of the valve.
3. Type of service (water, oil, gas,
superheated steam, etc.)
4. Operating pressures and
temperature.
5. Direction of flow through stop valves
(inlet pressure above the disk or
below the disk).
6. Rate of flow through the valve (lbs.
per hour or gallons per minute).
7. What pressure temperature or flow rate
at which the reported trouble occurs.
8. Pressure drop across the valve.
Information Request
If the maintenance problem looks particu-
larly difficult, it is suggested that you con-
tact your local Edward Valves representa-
tive. They are familiar with these mainte-
nance instructions and has a variety of
engineering data sheets. In all communica-
tions with your local representative con-
cerning service difficulties, mention the
valve size, figure number, registration num-
ber (if one is given) and as many of the
eight conditions listed above as possible.
Some of this information is found on the
nameplate fastened to the valve yoke.
Ordering Parts
All requests for replacement parts for cast
steel valves should be forwarded to the
Edward business unit in Raleigh, North
Carolina. Specify shipment requirements
(Air Express, Area Express, etc.)
Edward Valves designs and manufactures all
valves for 40 years’ service. That means not just
building a reliable product, but one that is easy
to maintain and service. It also means providing
a team of experienced, dedicated professionals
to keep your Edward valves operating at peak
performance. Something we have been doing
since 1904.