IM 01C25B01-01E
5-4
5. INSTALLING IMPULSE PIPING
5.2 Impulse Piping Connection
Examples
Figure 5.5 and 5.6 show examples of typical impulse
piping connections. Before connecting the transmitter
to the process, study the transmitter installation
location, the process piping layout, and the characteris-
tics of the process fluid (corrosiveness, toxicity,
flammability, etc.), in order to make appropriate
changes and additions to the connection configurations.
Note the following points when referring to these
piping examples.
• The high pressure connecting port on the transmit-
ter is shown on the right (as viewed from the front).
• The transmitter impulse piping connection is shown
for a vertical impulse piping connection configura-
tion in which the direction of connection is either
upwards or downwards.
• If the impulse line is long, bracing or supports
should be provided to prevent vibration.
• The impulse piping material used must be compat-
ible with the process pressure, temperature, and
other conditions.
• A variety of process pressure tap valves (main
valves) are available according to the type of
connection (flanged, screwed, welded), construction
(globe, gate, or ball valve), temperature and
pressure. Select the type of valve most appropriate
for the application.
Tee
3-valve
manifold
3-valve
manifold
Drain
valve
Orifice
Drain
plug
Tap
valve
Union
or flange
Liguid
Gas
Condensate pot
Steam
Liquid Level - Closed Tank
Liquid Level - Open Tank
Vent plug
Closed tank
Open tank
Drain valve
Tee
Tap valve
Drain plug
Union or flange
Pipe
F0505.EPS
Figure 5.5
Impulse Piping Connection Examples for
Differential Pressure Transmitters
F0506.EPS
Liquid Gas Steam
Union or flange
Tee
Tee
Drain plug
Drain valve
Drain valve
Drain plug
Union or flange
Union or
flange
Union or flange
Tap valve
Tap valve
Tee
Drain valve
Drain plug
Tap valve
Figure 5.6
Impulse Piping Connection Examples for
Gauge/absolute Pressure Transmitters
