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Direct Steam Injection Humidifier
Installation Instructions and User Manual
Page | 10
Stage 3 – Control Valve Installation
Any installation work must be carried out by suitably qualified personnel.
Control Valve Positioning
The body of the valve must be positioned properly to have the steam supply going into the A
port and exiting from the AB port. Do not refer to the orientation of the actuator head for
positioning, since the head can be reversed.
Install the actuated valve between 20 to 30 degrees from the vertical line to reduce the
radiant heat to the actuator head.
Illustration 11 - Control Valve Orientation and Control Valve Angle
Control Valve Installation without Header
Use the proper size union to connect the control valve to the steam distributor. The maximum distance
between the steam control valve and the dispersion tubes port should be 8” (203 mm).
Illustration 12 - Control Valve Connection to Steam Distributor without Header
Control Valve Installation with Header
Connect the steam control valve to the steam header by using a length of treaded pipe of the proper
dimension. The connection between those must not exceed 8” (203 mm) and the steam control valve port
must be aligned with the header inlet port.
Illustration 13 - Control Valve Connection with Header
CONTROL VALVE
WITH ACTUATOR
UNION
STEAM DISTRIBUTOR
CONTROL VALVE
WITH ACTUATOR
STEAM HEADER
TO STEAM
DISTRIBUTOR
