Badger Meter Sanitary Valve - Manual (Page 6)

Page 6
9-11
Sanitary Control Valve
Valve Installation
Badger Meter’s Research Control® SCV-85, SCV-89 and SCV-95 are designed for simple mounting into processing lines using
the appropriate sized end connections. The actuator uses standard NPT connections for the air lines making the installation
process simple.
1. Shut off the process line flow. Remove the existing actuator if necessary.
2. Mount the actuator to the proper bracket and support surface and secure with the proper mechanism.
3. Align the inlet port to the process line and secure with the properly sized clamps.
4. Align the outlet port to the process line and secure with properly sized clamps.
5. If required and available, install an alarm or vent port system to the vent port on the bonnet of the valve.
To avoid personal injury or property damage, the valve should not be serviced while the system is in operation. All hazardous
fluids must be drained properly before the valve is serviced.
Air Piping
A range of actuators exists which fit on the various sanitary valves. Badger Meter offers a 1/4”, 1/2” and a 35” actuator for this
product line in both Epoxy Coated Aluminum and 316 Stainless Steel. Refer to the appropriate actuator manual when work-
ing on your valve assembly.
The 35” is field-reversible. Please confirm mode of operation before piping air to the actuator.
1. For an air-to-open (air to retract) operation, the air pressure line should be connected to the 1/4” NPT opening on the
lower shell, below the diaphragm. For air-to-close (air to extend) operation, the air line should be connected to the
1/4” NPT opening on the upper shell, above the diaphragm.
2. All Instrument and supply air should be clean, dry and free of oil and debris. Contaminates can greatly reduce the life
of the actuator.
Valve Positioner
To maximize the accuracy of the valve, Badger Meter recommends the valve to be used with an external positioner. If pre-
configured with a positioner, the positioner will be properly installed and tested on the valve before being shipped from the
factory.
Connect the instrument signal and supply air line to the positioner input and supply port using a small amount of paste type
thread sealant. DO NOT use TFE tape.
NOTE: 25-35 PSIG supply air pressure is appropriate. If the valve does not achieve the required travel, the supply pressure
can be raised until full travel is achieved. The maximum recommend pressure is 60 PSIG.
If a positioner is selected after receiving the valve from Badger Meter, consult the operations manual from the positioner
manufacturer.