Flow Sensor

42.49$ 49.99$

FS4220

3/4'' NPT
1'' NPT

Product variants

Detects water leaks that may occur due to pipe breaks in walls and ceilings*
Sends a shut-off signal to the main water valve when a leak or abnormal flow is detected**
Ability to monitor your water consumption through consumption graphs in Neviweb

* The flow sensor detects abnormal flows of 2L/min (¾ inch version) and 4L/min (1 inch version).
** The tolerance for abnormal flow before alerting or closing the valve is at least 15 minutes.

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Compatibility and installation

The flow sensor installation should be performed by a certified professional in accordance with local and national building codes.

The flow sensor is designed to be installed only with NPT valves and not with PEX valves.

Technical specifications

Dimensions FS4220:

Length: 60 mm (2.36 in)
Sensor diameter: ¾ in NPT x ¾ in NPT

Dimensions FS4221:

Length: 66 mm (2.60 in)
Sensor diameter: 1 in NPT x 1 in NPT

Material:

304 stainless steel, lead-free

Hydraulic pressure resistance:

1.75 MPa (244 PSI)

Certifications and warranty

Complies with ANSI B120.1 standard
Complies with NSF/ANSI 61 standard

Limited 3-year warranty

Included in the Box

1 flow sensor FS4220 or FS4221
Installation guide – French version
Installation guide – English version

Flow Sensor

Dimensions FS4220:

Dimensions FS4221:

Material:

Hydraulic pressure resistance:

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