4 Operation
Study the instructions carefully.
The item refer to the parts list and service kits section.
NO= Normally open (pneumatic movement downwards)
NC= Normally closed (pneumatic movemetn upwards)
Step 1b
Type Change-over valve (NC and NO)
Two step valves as change-over (NC and NO) can be used for drainage of two pipes simultaneously or split of flow in three lines.
The valve has a fixed intermediate position and spring return to the end positions.
Spring return to lower position = NC
AIR
TD461-1016
F
TD 461-624_3
S
AIR
Closed
Intermediate position
Two step stroke activated
Open
The plug opening for different shut-off valves and Actuator size is shown below.
Standard Actuator choice
(NC)
High pressure Actuator
(NC)
Dimensions = mm
Inch tube
DIN tube
Inch tube
DIN tube
1
½
”
2”
2
½
”
3”
4”
1
½
”
2”
2
½
”
3”
4”
2”
2
½
”
2”
2
½
”
F min.
Fixed intermediate
position
6.5
11
11
14
14
6.5
11
11
14
14
9
9
9
9
S = full stroke opening
17
22
22
27
27
17
22
22
27
27
22
22
22
22
15
