Connecting The Tubing And Air Supply - GE Baker Hughes Masoneilan SVI FF Installation And Operation Manual

Connecting the Tubing and Air Supply

The last step in hardware installation for the SVI FF is to connect the air supply to the
positioner. This section describes the process for connecting the tubing and air supply to a
single and double acting positioner.
WARNING
The use of a Masoneilan filter regulator with a 5-micron filter is recommended for the air
supply. Use 1⁄4" (6.35 mm) minimum tubing between filter regulator, the SVI FF and the
actuator, with 3⁄8" (9.53 mm) used for larger actuators. Use a soft setting anaerobic hydraulic
seal such as Loctite Hydraulic Seal 542 for sealing the pneumatic pipe threads. Follow
manufacturer's instructions.
NOTE
1. Install the tubing to the air supply port,
2. For a
Single acting actuator - pipe the outbound air from the output pressure port (
the actuator
Double acting actuator - pipe output pressure port one (
actuator and output pressure port two (
arrow only for High Flow).
(
3. Air supply:
Supply pressure for the single acting SVI FF:
20 -150 psi max. (1.4 - 10.3 bar) (138 - 1034 kPa)
Supply pressure for the double acting and FF High Flow SVI FF:
25 - 150 psi (1.73 - 10.3 bar) (172 - 1034 kPa)
Minimum tubing diameter 1⁄4" (6mm x 4mm)
Supply pressure must be 5 psi - 10 psi (.345 bar - .69 bar)
(34.485 - 68.97 kPa) greater than the spring range of the actuator but may not exceed
the rated actuator pressure. Refer to the valve or actuator instruction manual.
62 |
BHGE
Isolate the valve from the process and disconnect air tubing from
the positioner. Disconnect air fully to avoid injury or process
damage.
Maximum allowable air supply pressure to the SVI FF varies
according to actuator and valve size and type. See pressure drop
tables in valve specification sheets to determine correct positioner
supply pressure. Minimum supply pressure must be 5 to 10 psi
(.345 bar - .69 bar) (34.485 - 68.97 kPa) above maximum spring
pressure.
arrow only for High Flow).
(
 
S
arrow only for High Flow).
(

I) for one side of the

II) for the other side of the actuator
© 2019 Baker Hughes, a GE company, LLC. All rights reserved.

I) to