Commissioning; Installation Of The Valve - Burkert 2012 Instructions De Service

COMMISSIONING

Installation of the valve

Installation in any position, but preferably with the actuator above.
Observe the flow direction!
Clean piping form contamination!
Before attaching the valve housing, make sure the piping is
aligned!
If the housing is to be welded on, make absolutely sure that the
actuator is removed beforehand.
Procedure:
1. Remove the pneumatic supply and the elctrical connection
(if a pilot valve is attached).
2. Control function A: Pressurize the lower control
connection of the actuator with compressed air (6 bar), so
that the valve disk is lifted from the valve seat and is not
damaged.
Control functions B and I: With control functions B and I,
no compressed air must be applied for this purpose.
3. Remove the actuator int he open valve position by
unscrewing the threaded nipple (SW70) from the housing.
ATTENTION!
Do not unscrew the screw /SW65) above the threeaded nipple.
4. Before reinstalling the actuator (in the open valve position), grease the nipple thread with stainless
steel lubricant, e.g. Klüberpaste UH1 96-402 from Messers. Klüber and replace the graphite seal if
necessary.
ATTENTION!
For special application such as for oxygen and analysis, use only the approved
lubricants.
5. Aligning the actuator:
After tightening the housing nipple (SW70) (observe torque), the actuator can be aligned as
required.
For this purpose, unsccrew the screw (SW65) above the threaded nipple ca. a halfthen retighten
the screw with a torque of 100 ±5 Nm.
ATTENTION!
During this operation, the valve must also be in the open position.
Tightening torques for the threaded nipple (SW 70)
DN
Tightening torque
[Nm]
NOTE For applications in aggressive media, we recommend attaching all free pneumatic
connections to a pneumatic hose whose other end lies in a neutral atmosphere.
4 - 2012 big
65 80
100 ± 5 120 ± 5
actuator
screw
(SW65)
threaded nipple
(SW70)
100
150 ± 5
lower
control port
housing