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February 2014
a. Depressurize the line using site-specific requirements.
b. Loosen all studs and nuts.
c. Remove the studs in one-half of the flange union.
d. Spread flange union by turning jackscrews clockwise.
e. Install the new plate or remove the existing plate for replacement or
inspection.
f. Install the new gaskets when installing the plate. It is recommended that
new gaskets be installed each time the orifice flange union is separated.
g. Center the plate in the pipe I.D.
h. Release the flange union by turning the jackscrews counter-clockwise.
i. Replace the studs.
j. Tighten studs in a star pattern.
Figure 1. Rosemount 1495 installation
Plug (2)
Nut
Jackscrew (2)
(1) The installation drawings applies when using the Rosemount 3051S, Rosemount 3051C,
and Rosemount 3095MV transmitter. See the following documents for quick installation instruction of the
transmitters.
Rosemount 3051S: document number 00825-0100-4801
Rosemount 3051C: document number 00825-0100-4001
Rosemount 3095MV: document number 00825-0100-4716
Pipe
Section
Jackscrew
Nut
(1)
1595
Gasket (2)
Stud
Jackscrew
Nut
Transmitter
Quick Start Guide
Nuts
5
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