Burkert Type 2031 - Handbuch (Seite 14)

14 - 2030/2031
english
• Regularly fasten screws of body (Pos.24) crosswise until body fits tightly.
• Switch actuator twice.
• Take-off control pressure.
• Fasten screws crosswise to specified torque.
Caution!
Observe torque (see table)!
• Screw-in transparent cap (Pos. 20).
• Examine valve for reliable operation and tightness.
Table: Seal kit
actuator Dn order no.
pps-actuator
order no.
pa-actuator
C 8 011 465 -
D 15 011 477 011 426
E 15, 20 011 488 011 440
F 20, 25 011 492 011 448
G 32, 40 012 127 012 125
H 40, 50 011 494 011 464
Table: Torque
orifice
(Diaphragm
size)
Dn [mm]
tightening torques for diaphragm
(approx. values) [Nm]
EPDM / FKM
PTFE / advanced PTFE /
laminated advanced PTFE
8 2,5 2,5
15 3,5 4
20 4 4,5
25 5 6
32 6 8
40 8 10
50 12 15
65 20 30