Burkert Type 2037 - Manual (Page 19)

19
Installation
procedure for control function a
→
Pressurize lower control air connection with compressed air
(value as indicated on the type label) (see “Fig. 17”).
→
Place actuator on the body.
→
Lightly cross-tighten the body screws until the diaphragm is
between the body and actuator.
do not tighten the screws yet.
→
Actuate the diaphragm valve twice to position the diaphragm
correctly.
→
Without applying pressure, tighten the body screws to the permitted
tightening torque (see “Tab. 7”).
→
Pressurize lower control air connection with compressed air (value
as indicated on the type label).
→
Check the tightening torque of the screws again.
procedure for actuator with control functions B and I:
→
Place actuator on the body.
→
Lightly cross-tighten the body screws without pressurization until
the diaphragm is between the body and actuator.
do not tighten the screws yet.
→
Pressurize upper control air connection with compressed air (value
as indicated on the type label) (see “Fig. 17”).
→
Actuate the diaphragm valve twice.
→
Tighten the body screws to the permitted tightening torque (see
“Tab. 7”)
Upper control air connection
(for CFB and CFI)
Lower control air connection
(for SFA and SFI)
Fig. 17: Control air connection
tightening torques for plastic body, Va tubular body (Va) and
forged body
orifice
(diaphragm size)
dn [mm]
tightening torque [nm]
(values for guidance)
EpdM/fkM ptfE / advanced ptfE /
laminated advanced ptfE
65 20 30
80 30 40
100 40 50
Tab. 7: Tightening torques for diaphragms
english
Type 2030, 2031, 2031 K, 2032,
2033, 2037