Burkert Type 2002 - Manual (Page 9)

9
StructureandFunction
Follow instructions for use in the Ex area! See chapter “3.1”.
• Stroke limitation
Limit of the maximum open position/flow rate by means of
adjusting screw.
• Feedback indicator
The device features mechanical limit switches or inductive prox-
imity switches.
5.2.2. Device versions
The angle seat valve / globe valve is available for the following actuator
sizes:
Type 2000: ø 40 mm to ø 125 mm
Type 2002: ø 50 mm to ø 125 mm
5.2.3. restrictions
Warning!
risk of injury from water hammer.
A water hammer could crack the lines and device.
• Use valves with flow inlet above seat for gaseous media and
steam only.
Follow instructions for use in the Ex area! See chapter “3.1”.
6. structure anD functiOn
6.1. structure
The angle seat valve / globe valve consists of a pneumatically actuated
piston actuator and a 2-way valve body / 3-way valve body. The actuator
is manufactured from PA or PPS. The tried and tested, self-adjusting
packing gland ensures high tightness. The flow-enhancing valve body
made of stainless steel or red bronze enables high flow values.
Line connector
Angle-seat body
Control air connection
Transparent cap with
position indicator
Actuator cover
Actuator body
Numbers for indicating
the direction of flow
Globe body
Type 2002 Type 2000
Fig. 3: Structure and description
english
Type 2000/2002