MPN

Siemens QVE1900 Series Flow Switch Flow Switch for Fluid, Liquid, 1.3 m3/h Min, 94.2 m3/h Max

RS Stock No.:: 287-8747
Mfr. Part No.:: QVE1900 / BPZ:QVE1900
Brand:: Siemens

Siemens QVE1900 Series Flow Switch Flow Switch for Fluid, Liquid, 1.3 m3/h Min, 94.2 m3/h Max

Subtotal (1 unit)*

£172.66

(exc. VAT)

£207.19

(inc. VAT)

FREE delivery for orders over £50.00

Temporarily out of stock

3 unit(s) shipping from 03 October 2025

Need more? Click ‘Check delivery dates’ to find extra stock and lead times.

Units	Per unit
1 +	£172.66

*price indicative

RS Stock No.:: 287-8747
Mfr. Part No.:: QVE1900 / BPZ:QVE1900
Brand:: Siemens

Find similar products by selecting one or more attributes.

Select all	Attribute	Value
	Brand	Siemens
	Media Monitored	Fluid, Liquid
	Device Type	Flow Switch
	Minimum Flow Rate	1.3 m3/h
	Maximum Flow Rate	94.2 m3/h
	Supply Voltage	250 V ac
	Minimum Media Temperature	-20 °C
	Maximum Media Temperature	+120°C
	Minimum Operating Temperature	-20°C
	Maximum Operating Temperature	+85°C
	Series	QVE1900
	Current Rating	15 A

	Select all
	Brand Siemens
	Media Monitored Fluid, Liquid
	Device Type Flow Switch
	Minimum Flow Rate 1.3 m3/h
	Maximum Flow Rate 94.2 m3/h
	Supply Voltage 250 V ac
	Minimum Media Temperature -20 °C
	Maximum Media Temperature +120°C
	Minimum Operating Temperature -20°C
	Maximum Operating Temperature +85°C
	Series QVE1900
	Current Rating 15 A

Siemens QVE1900 Series Flow Switch, 1.3 m3/h Minimum Flow Rate, 94.2 m3/h Maximum Flow Rate - QVE1900

This flow switch is designed specifically for monitoring the flow of liquids within hydraulic systems in HVAC applications. With a broad operating range, it efficiently monitors flows in pipes with diameters from DN 32 to DN 200. The robust device operates effectively between temperatures of -20°C and +120°C, contributing to its versatility in diverse environments.

Features & Benefits

• Monitors flow rates between 1.3 m³/h to 94.2 m³/h
• Adjustable switch-on/off values for precise operation
• Integrated microswitch offers a reliable changeover function
• High-temperature resilience up to +120°C ensures durability
• IP 65 rated for protection against dust and water ingress
• Simple installation facilitates quick integration into existing systems

Applications

• Utilised in refrigeration systems for effective flow monitoring
• Applicable in heat pump installations ensuring fluid circulation
• Ideal for use with boilers to enhance safety and efficiency
• Supports operation in heat exchangers, optimising thermal transfer
• Implemented in various industrial fluid monitoring systems

What is the significance of the adjustable switch-on/off values?

The adjustable switch-on/off values allow for precise calibration of flow detection, enabling adaptation to specific system requirements and optimising performance.

How does the design accommodate different pipe diameters?

The flow switch is compatible with a range of pipe diameters from DN 32 to DN 200, providing flexibility for various installation settings and enhancing its application versatility.

What materials are used in the construction of this device?

The flow switch features a brass screw-in body, high-grade stainless steel paddles, and a durable plastic cover, all contributing to its reliability in demanding environments.

What are the implications of the IP 65 rating?

An IP 65 rating signifies excellent protection against dust and water, ensuring the device remains functional under harsh conditions and supporting long-term operational reliability.

Is the flow switch suitable for use with ammonia?

No, this flow switch is not suitable for ammonia and is designed for use with all other liquids, ensuring flexibility across various hydraulic applications.

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