Emerson Daniel Senior Orifice Fitting Series, Руководство владельца и оператора

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Owner and operator manual Section 4: Orifice plate installation and removal instructions
3-9008-001 Rev M
January 2015
Selecting an appropriate plate change procedure 51
In order to assist the operator in determining the safest and most efficient means to perform the
Orifice Plate (13) change on a Senior equipped with a grease assisted slide valve, Daniel
prepared two plate change procedures that an operator may select from.
The operator must select the appropriate procedure based upon their intimate knowledge of
both the service and environmental conditions of that particular flow measurement system. The
two Orifice Plate (13) change procedures described below are the “Quick Change” process, and
the “Extended Time” process. If the Senior is equipped with a “soft-seat” slide valve design, then
the operator may use either procedure.
An operator can select the “Quick Change” process, based upon their determination that it will
take LESS THAN 15 MINUTES from the time the Top (14) fluid is evacuated to the full
replacement of the Clamping Bar (12 or 12HP), the Sealing Bar (9 or 9HP), and the Sealing Bar
Gasket (9A, 9A-HP or 9CF) after the plate change.
The “Extended Time” process is a procedure selected when the operator determines that the
time beginning with the evacuation of Top (14) fluid to the full replacement of the Clamping Bar
(12 or 12HP), the Sealing Bar (9 or 9HP), and the Sealing Bar Gasket (9A, 9A-HP or 9CF) after
plate change is GREATER THAN 15 MINUTES.
If the operator does not know the time required to perform the Orifice Plate (13) change
operation, then the operator must use the “Extended Time” procedure. The table below
describes the conditions along with the suitable procedure.
Table 4-1 Plate change procedure selection for grease assisted slide valves and soft seat
slide valves
Operator’s evaluation of
plate change conditions
Procedure Type of valve
The estimated time period from
the Top (14) fluid evacuation to
the full replacement of the
Clamping Bar (12 or 12HP), the
Sealing Bar (9 or 9HP), and the
Sealing Bar Gasket (9A, 9A-HP or
9CF) after plate change is: LESS
THAN 15 MINUTES
“Quick Change” Grease assisted slide valve
Soft seat slide valve
The estimated time period from
the Top (14) fluid evacuation to
the full replacement of the
Clamping Bar (12 or 12HP), the
Sealing Bar (9 or 9HP), and the
Sealing Bar Gasket (9A, 9A-HP or
9CF) after plate change is:
GREATER THAN 15 MINUTES
“Extended Time” Grease assisted slide valve
Soft seat slide valve
The estimated time period from
the Top (14) fluid evacuation to
the full replacement of the
Clamping Bar (12 or 12HP), the
Sealing Bar (9 or 9HP), and the
Sealing Bar Gasket (9A, 9A-HP or
9CF) after plate change is:
UNKNOWN
“Extended Time” Grease assisted slide valve
Soft seat slide valve