Burkert Type 2712 - Manual (Page 4)

8
Pushing direction
for packing gland parts
1 Support ring
2 Upper gaskets
3 Upper pressure ring(s)
4 Pressure spring
5 Lower pressure ring
6 Lower gaskets
7 Spacer
∅ Spindle 22 mm
∅ Spindle 14 mm
1
2
3
4
5
6
∅ Spindle 10 mm
1
2
3
4
5
6
1
2
3
4
6
5
7
Fig. 2: Seal sets for packing glands
Spindle
diameter
Orifice body Material of the spindle
guide
Tightening
torque [Nm]
10 mm PEEK 6
10/15
1.4401 / 1.4404 /
316L
15
20/25 25
32 50
14 mm PEEK 15
25 1.4401 / 1.4404 /
316L
25
32 – 50 60
22 mm 65 – 100 1.4401 / 1.4404 60
Tab. 3: Spindle guide tightening torques
For installation of control cone see Chapter “3.2”, page 4.
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9
3.4 installing actuator on valve body
→
If required, replace graphite seal.
Warning!
Unsuitable lubricant may contaminate the medium.
In oxygen applications there is a risk of explosion.
▶ Only use approved lubricants for specific applications, such as oxygen or
analytical applications.
→
Grease nipple thread before re-installing the actuator (e.g. with Klüber
paste UH1 96-402 from Klüber).
note!
Damage to the seat seal or the seat contour!
▶ When installing the actuator, the valve must be 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 compressed air (5 bar) – valve opens.
With control: Open valve according to the operating
instructions for the control.
1
2
Control air connection
→
Screw actuator into the valve body. Observe tightening torque
(see “Tab. 4”).
DN Torque [Nm] DN Torque [Nm]
10/15 45 ±3 50 70 ±3
20 50 ±3 65 100 ±3
25 60 ±3 80 120 ±5
32
65 ±3
100 150 ±5
40
Tab. 4: Tightening torques of valve body / nipples
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10
4 inSTallaTion ToolS
Installation wrench for packing gland
(for PEEK spindle guide only)
Order no.
Spindle diameter 10 mm 665 700
Spindle diameter 14 mm 665 701
Tab. 5: Installation wrench for PEEK spindle guide
Modified socket wrench for packing gland
(series-production status from January 2013)
AF
Socket wrench Body DN AF Order no.
Spindle ∅ 10 mm 15 19 683 220
Spindle ∅ 10 mm 20 – 25 21 683 222
Spindle ∅ 14 mm 25 – 50 21 683 223
Tab. 6: Modified socket wrench
Special wrench for rotating the actuator
(only for actuator without hexagon)
Order number
665 702
Tab. 7: Special wrench for actuators without hexagon
Installation tools for replacing valve seat
Orifice valve seat DN Order number
15 652 604
20 652 605
25 652 606
32 652 607
40 652 608
50 652 609
65 655 562
80 655 563
100 655 564
Tab. 8: Installation tool for replacing valve seat
If you have any queries, please contact your Bürkert sales office.
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Type 2301, 2712