GESTRA BA 46 - Page 33

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 Turn the dial (2) on the nozzle needle (25) to the
desired position.
 Place the stuffing box gland (8) on the nozzle
needle (25).
 Hand-tighten the stuffing box screws (28).
 Unscrew the nozzle needle by a half turn.
The torque for the stuffing box screws varies
depending on the equipment:
 For models with DN 15 to DN 32, the required
torque is 7 Nm.
 For models with DN 40 and DN 50, the required
torque is 11 Nm.
 Tighten the stuffing box screws to the specified
torque.
 Turn the nozzle needle to closed position with a
torque of 7 Nm.
 Place the control lever (1) on the nozzle needle.
 Align the scale (9) on the dial (2) so that the "0"
mark is in the centre of the dial.
 Screw the hex nut (30) onto the nozzle needle,
holding the control lever firmly.
 Tighten the hex nut to a torque of 20 Nm.
 Insert the sealing ring (7).
 Screw in the sealing plug (6) or sampling valve
to a torque of 130 Nm.
 Fit the actuator as described on page 34.