4 Operation
Study the instructions carefully.
The item refer to the parts and service kits section.
NO = Normally open (pneumatic movement downwards.
NC = Normally closed (pneumatic movement 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
TD 461-622_2
TD 461-623_2
AIR
F
TD 461-624_2
S
AIR
Closed
Intermediate position
Two step stroke activated
Open
The plug opening for different Change-over 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
38
51
63.5
76.1
101.6
40
50
65
80
100
51
63.5
50
65
F = Fixed
intermeidate
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
