Piston

Built around a spring-loaded piston displaced by the flowing liquid, these flow switches generate a switching signal at a precisely defined flow rate. The compact, robust design requires no external power for the switching function, making them a straightforward and reliable solution for flow monitoring in hydraulic systems, cooling circuits, and machine tool applications where a simple go/no-go output is sufficient.
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Product Overview (28)

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).

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.

Mechanical flow switch for liquid media with cast steel flange VD-FT

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 steel construction and PN 40 pressure resistance.

Mechanical flow switch for water with stainless steel thread VD-GK

Mechanical flow switch for water lines with G 1/2 to G 2 internal thread, DN 15 to DN 50 sizes, 1-200 l/min H2O switching ranges, adjustable Reed contact, stainless steel wetted materials and PN 100 pressure resistance.

Mechanical flow switch for water with red brass internal thread VD-GR

Mechanical flow switch for water lines with G 1/4 to G 3 internal thread, DN 8 to DN 80 sizes, 1-600 l/min H2O switching ranges, adjustable Reed contact and red brass wetted body materials.

Mechanical flow switch and indicator for water with internal thread VDO

Mechanical flow switch and indicator for water lines with G 1/4 to G 3 internal thread, DN 8 to DN 80 sizes, 2-600 l/min H2O switching ranges, adjustable Reed contact and rotating local display.

Mechanical flow switch for liquid media, DN 8 to DN 25 FW1-GM

Mechanical flow switch for liquid flow monitoring with 1 to 11 l/min H2O switching ranges, DN 8 to DN 25 and G 1/4 to G 1 internal threads. Reed switch, brass/POM construction and IP67 protection.

Flow switch for viscous oils, DN 15 G1/2 FW4V

Flow switch for oil flow monitoring with bidirectional detection, DN 15 G1/2 female thread and 1 l/min switching point. Mechanical piston design, reed switch output and IP67 ingress protection.

Mechanical flow switch for water and other liquid media, DN 15 FX

Mechanical flow switch for water with 0.4...12 l/min switching range, DN 15 G1/2 A connection, integrated 25 µm filter, reed switch and IP65 protection.

Flow switch for water with adjusted switching point G

Flow switch for water monitoring with adjusted switching point, DN 8 to DN 15, G 1/4 to G 1/2 female thread, PN 16, Reed switch, IP 65 protection and optional DIN 43650-A / ISO 4400 plug.

Flow switch for liquids, DN 8...25 HD1F

Flow switch for liquid flow monitoring, with 0.1...80 l/min H2O ranges, DN 8...25, G 1/4...G 1 female threads, reed switch and ingress protection (IP65) connector.

Mechanical flow switch for liquids HD1K

Mechanical flow switch for liquid media, with 0.1...80 l/min H2O switching ranges, DN 8...25 connections, reed switch output, brass or stainless steel body and IP 65 protection.

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