# Siemens QVE1901 Hydraulic Flow Switch PN25 DN20-200

Ensure optimal performance and protection with the **Siemens QVE1901 Hydraulic Flow Switch** for your PN25 rated hydraulic and HVAC systems. This robust device offers precise flow monitoring across pipelines from DN20 to DN200 safeguarding critical equipment like pumps boilers and heat exchangers from potential damage due to insufficient flow. Engineered by **Siemens** the **QVE1901** integrates seamlessly into industrial automation and building control environments providing reliable operational oversight.

For applications demanding accurate flow detection the **Siemens QVE1901** is designed for industrial automation and control systems. It provides essential protection features for hydraulic fluid systems and HVAC installations ensuring equipment longevity and system efficiency. Voice search queries like 'Siemens flow switch for pump protection' will easily find this reliable component.

-   Accurate liquid flow monitoring for enhanced system safety in hydraulic and HVAC applications.
-   Robust construction built for demanding industrial environments ensuring long-term durability.
-   Protects vital components such as pumps boilers and heat exchangers from low-flow conditions.
-   Seamless integration with **Siemens** automation and control systems.
-   Reliable performance for PN25 pressure systems with DN20 to DN200 pipe sizes.

**Specifications**

-   Manufacturer Siemens
-   Part Number QVE1901
-   Product Type Hydraulic Flow Switch
-   Pressure Rating PN25
-   Pipe Size Range DN20...DN200
-   Application Hydraulic systems HVAC chillers boilers heat exchangers pump protection automation

Trust in the advanced engineering of **Siemens** for your critical flow monitoring needs. The **Siemens QVE1901** flow switch offers unparalleled reliability and protection for your industrial automation systems. Discover the difference quality makes for your operations.

## Details

- **Price:** 999.0 USD
- **Vendor:** Siemens
- **Type:** Automation > Sensors > Flow Switches
- **Tags:** DN200 flow switch, flow monitoring device, HVAC components, hydraulic flow switch, industrial automation, PN25 flow switch, pump protection, Siemens flow switch, Siemens QVE1901

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 999.00 USD | In stock |

## Images

- Siemens QVE1901 Hydraulic Flow Switch PN25 DN20-200-Ram Automations

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> Source: [Ram Automations](https://ramautomations.com/products/siemens-qve1901-hydraulic-flow-switch)
> Updated: 2026-10-20