Burkert 2000 - Page 14

14
Replacing the seal set
Type 2000, 2002, 2012
→ OnlyactuatorsizeG,H: Insert washer
40
.
→ ForcontrolfunctionBandI:ChangeO-ring
30
.
→ ReplaceO-ring
32
todothis,removetransparentcap.
→ OnlyactuatorsizeCwithouttransparentcap:Changeself-lockingring
53
andO-ring
32
.
→ Lightlylubricatecoverthread,lubricantAmblygonTA.
→ Mount cover
31
andscrewtightlywithspecialwrench.
→ Clamp body
1
.
Donotdamagesealingedgeswhenreplacingtheseal!
→ Replacegraphiteseal
5
.
→ Only for VA body (VA = stainless steel): Lubricate nipple thread
6
withKlüberpasteUH196-402.
NOTE!
Damage to the seat contour!
▶ Duringinstallation,takecarethatthereisnodamagetotheseatcontour.
▶ Observetighteningtorquesaccordingto“Table4”.
→ ForcontrolfunctionAandI: Pressurize lower control air connection with compressed air (5 bar).
→ Screw in nipple
6
with actuator in valve body
1
.Observetighteningtorque!
→ OnlyforType2002:Usesealingtape.
→ Check the valve for function and leaks.
Tighteningtorquesforscrewingthenippleintothevalvebody
DN (mm) Tightening torque (Nm) DN (mm) Tightening torque (Nm)
15 45 40 65
20 50 50 70
25 60 65 70
32 65
Table 1: Valve body tightening torques
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