bürkert 3320 Schnellstartanleitung Seite 19

Type 3320, 3321
Installing the valve
7.2.3 Installation conditions
Installation position: arbitrary
Flow direction: indicated on the type label with an arrow and the
digits 1 and 2. The 1 and 2 are also on then valve body for iden-
tification.
The flow direction is under the seat.
Pipelines: Ensure the pipelines are aligned.
Filter: Required for devices with approval as per EN 161.
According to EN 161 "Automatic shut-off valves for gas burners
and gas appliances", a dirt trap, which prevents the penetration
of a 1 mm test pin, must be installed upstream of the valve in the
pipeline.
Preparation: Clear impurities from pipelines (seal material, metal
chips, etc.).
7.2.4 Weld the valve body into the pipeline
DANGER!
Risk of injury from high pressure.
▶ Before working on the system, switch off the pressure and
vent or empty the lines.
WARNING!
The electronics assembly in the actuator will be damaged by
the effects of heat.
• The actuator must be removed before the valve body is
welded in.
→ Weld the valve body into the pipeline.
Ensure that there is no voltage present and minimal vib-
ration during installation.
7.2.5 Mounting actuator on the valve body
→
Before installation the actuator, check whether the seal
for the valve body is present and undamaged.
→ Replace seal.
Globe valve
Seal
Fig. 9: Valve body seal
DANGER!
Danger due to incorrect lubricants.
Unsuitable lubricant may contaminate the medium. There is a risk
of explosion in oxygen applications.
▶ For specific applications, e.g. oxygen or a nalysis applica-
tions, use approved lubricants only.
→ Before re-installation, grease the external thread of the body
connection (e.g. with Klüberpaste UH1 96-402 from Klüber).
→ Position the external thread on the internal thread of the body
connection. See "Fig. 8: Installation of electromotive actuator
(example angle seat valve)".
English
Angle seat valve
Seal
19