Burkert 2301 Element Manuel D'instructions page 4

Before the control cone, valve seat and packing gland can be replaced, the
actuator must be removed from the valve body.
3.1 Removing the actuator from the valve
body
→
Clamp the valve body into a holding
device (applies only to valves not yet
installed).
NOTE!
Damage to the seat seal or the seat
contour!
▶ When removing the actuator, ensure
that the valve is in the open position.
→
For control function A:
Without control: Pressurize control air connection 1 (Type 2301) or
lower control air connection (Type 2712) with com-
pressed air (5 bar) – valve opens.
With control: Open valve according to the operating instructions for
the control.
→
Place a suitable open-end wrench on the wrench flat of the nipple.
→
Unscrew the actuator off the valve body.
4
2
Control air
1
connection
Actuator
Nipple
Wrench flat for
open-end
wrench
Valve body
english
3.2 Replacing control cone or valve seat set
NOTE!
Important information for the problem-free and safe functioning of the
device!
The sealing face of the control cone must not be damaged.
→
Remove actuator (see Chapter "3.1")
→
Knock out dowel pin using a suitable pin punch (see "Tab. 1").
Spindle ∅ (mm)
Pin punch ∅ (mm)
Body DN (mm) 10/15 – 25
Tab. 1: ∅ Spindle and pin punch with reference to DN
→
Remove control cone.
→
Attach new control cone
to the spindle.
→
Align bores of the control
cone and spindle.
10 14
4 5
25 – 50 65 – 100
Graphite seal
Spindle
Dowel pin
Control
cone
22
6