Electro-Mechanical Flow Switches

Reliable flow monitoring often starts with a simple switching point rather than continuous metering. Electro-mechanical flow switches use proven paddle or piston mechanisms to actuate a contact when flow is present or falls below a set threshold, making them ideal for pump protection and interlocks. Integrated into your control cabinet via standard switch outputs, they help you prevent dry-running and maintain safe operating conditions in compact piping systems.
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Product Overview (41)

Mechanical flow switch for liquid and gas media MR1K

Mechanical flow switch for liquid and gas media, covering H2O switching ranges from 0.4...4 to 6...60 l/min with G 1/4 to G 1 connections, brass or stainless steel bodies and optional mechanical indication.

Mechanical flow indicator and switch for liquid media NJ / NJV

Mechanical flow indicator for liquid media, with 2 - 80 l/min ranges for water or 30..200 mm²/s oils, DN 8..25 female threads and optional IP65 switching contacts.

Distribution block for NJ / NJV flow indicators, 1...8 channels VB

Distribution block for NJ / NJV flow indicator systems, with DN 20, G 3/4 internal thread and 1 to 8 measuring points. Integrated needle valve supports manual flow control.

Flow meter for water, 2 to 600 l/min TZ1-GR

Flow meter for water monitoring from 2 to 600 l/min H2O, with large analog indication, optional microswitch, G 1/4 to G 3 female threads and ingress protection (IP65).

Flow switch for water lines, DN 25 to DN 200 UB1

Flow switch for water lines that monitors flow in DN 25 to DN 200 pipes, with 1.2...34 m3/h switching ranges, Qmax. up to 75 m3/h, microswitch output, transparent cover and ingress protection (IP65).

Flow switch for DN 65 to DN 100 pipe monitoring UBX-025

Flow switch for pipe monitoring in DN 65, DN 80 and DN 100 lines, with factory-set switching points in H2O, R1" process connection, microswitch with gold contact and IP65/IP67 protection when using an approved cable.

Flow switch for DN 65 to DN 100 liquid pipelines UBX-032

Flow switch for liquid pipelines monitors water and oils in DN 65, DN 80 and DN 100 pipes, with factory-set switch points, PN 16 pressure resistance and IP 65 / IP 67 protection when used with an approved cable.

Flow switch for water with threaded connection UM3K-G

Flow switch for water applications, with DN 10...50, G 3/8...G 2 female threads and 4.0 - 93.0 l/min H2O switching ranges, using a microswitch and DIN 43650-A / ISO 4400 plug.

Flow switch for water with solder/weld connection with microswitch UM3K-V

Flow switch for water flow monitoring, with 10.0 - 268.0 l/min H2O switching ranges, DN 15...80 sizes, micro switch output, compact design and ingress protection (IP65).

Flow switch for water with internal thread, PN 25 UR1-G

Flow switch for water monitoring with DN 10...50 and H2O switching ranges from 1.3 to 53 l/min. Reed switch, compact threaded body and PN 25 pressure resistance support reliable line integration.

Flow switch for water and oil pipelines with reed contact UR1-H

Flow switch for water and oil pipelines, covering DN 32..80 and 23..118 l/min H2O with G 11/4..G3 threaded connections, reed contact and ingress protection (IP65).

Flow switch for water applications, solder/weld connection UR1-V

Flow switch for water monitoring in DN 15...80 pipes, with 5...174 l/min H2O switching ranges, reed switch operation and compact brass switch unit for solder or weld sockets.

Flow switch for water flow monitoring, DN 10...50 threaded connection UR3K-G

Flow switch for water flow monitoring with DN 10...50 female threads, 3.5 - 69 l/min H2O switching ranges and reed switch output. Compact paddle design with low pressure loss and ingress protection (IP65).

Flow switch for water with solder and weld connection with reed switch UR3K-V

Flow switch for water flow monitoring, covering DN 15...80 with 8.5...248 l/min H2O switch ranges, PN 25 pressure resistance and a reed switch output via DIN 43650-A / ISO 4400 connector.

Mechanical flow switch for liquid media with flange connection VD-FG

Mechanical flow switch for liquid media, with DN 15 to DN 150 flange connection, 2-950 l/min H2O switching ranges, adjustable Reed contact, cast iron housing and ingress protection (IP44), optional ingress protection (IP65).

Mechanical flow switch for liquid media with stainless steel flange VD-FK

Mechanical flow switch for liquid media, with DN 15 to DN 150 flange connection, 2-950 l/min H2O switching ranges, adjustable Reed contact, stainless steel construction and PN 40 pressure resistance.

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