Series

 VHS09 / VK309

• Universal flow switches for copper pipe Ø 32...88.9 

• Adjustable for pipe size and setpoint by trimming the paddle

• Soldering adapter for copper pipes

 Technical data

 VHS09

 VK309

 Switching function

 Contact 

 → closes at increasing flow 

 → opens at decreasing flow

 Reversing possible

 Contact 

 → closes at increasing flow

 → opens at decreasing flow

 Pressure rating

 PN 25

 PN 10

 Temperature ranges

 Medium

 -25...110 °C

 -25...100 °C

 Ambient

 -25...80 °C

 -25...70 °C

 Electrical data

 Electrical connection

 Plug connector DIN EN 175301-803-A incl. cable socket

 1.5 m PVC jacket cable

 Switching current

 Max. 1 A

 Switching voltage

 Max. 230 VAC, 48 VDC

 Rating

 Max. 26 VA, 20 W

 Degree of protection EN 60529

 IP65

 Protection class EN 60730-1

 Class II

 Approvals

 WRAS

 TUV

 For type

 See order code

 VHS09

 → Plug connector DIN EN 175301-803-Aincl.cable socket with two LED

      for switching voltages 24 V...230 V AC/DC ±20 %, ambient temperature -20...70 °C

 → or 4-pin-sensor plug M12 x 1

 For type

 On request

 VK309

 → Reversed switching function 

 → Recognized component ETL according to UL & CSA standards

 Paddle to be trimmed to​

 Paddle mark

 9

 20

 30

 40

 50

 60

 Installation length L1 [mm]

 39

 50

 60

 70 

 80

 90

 Setpoints* / Max. flow rate [m³/h]

 Ø 32 x 1

 Increasing flow ON**

 2

 1.9

 10

 Decreasing flow OFF

 Max. flow rate

 Ø 35 x 1

 Increasing flow ON**

 2.6

 2.4

 20

 1.8

 1.6

 13 

 Decreasing flow OFF

 Max. flow rate

 Ø 35 x 1.5

 Increasing flow ON**

 2.5

 2.2

 18

 1.7

 1.6

 12 

 Decreasing flow OFF

 Max. flow rate

 Ø 42 x 1.5

 Increasing flow ON**

 3.9

 3.7

 30

 2.8

 2.7

 20 

 2.2

 2.1

 15

 Decreasing flow OFF

 Max. flow rate

 Ø 54 x 1.5

 Increasing flow ON**

 3.2

 3

 21

 Decreasing flow OFF

 Max. flow rate

 Ø 54 x 2

 Increasing flow ON**

 3

 2.9

 20

 Decreasing flow OFF

 Max. flow rate

 Ø 64 x 2

 Increasing flow ON**

 8.6

 7.9

 53

 7.2

 6.6

 42                         

 5.2

 4.7

 30 

 4

 3.7

 24 

 Decreasing flow OFF

 Max. flow rate

 Ø 76,1 x 2

 Increasing flow ON**

 13.6

 12.1

 80

 10.8

 10

 65

 8

 7.4

 46

 6.4

 5.8

 35 

 5.2

 4.7

 31

 Decreasing flow OFF

 Max. flow rate

 Ø 88,9 x 2

 Increasing flow ON**

 10.9

 10.7

 67

 9

 8.4

 52 

 7.3

 6.9

 42 

 6.1

 5.9

 39

 Decreasing flow OFF

 Max. flow rate