SCHROEDER Recirculation valves

Schroeder Valves – Automatic Recirculation Valve (ARV)

The Schroeder Automatic Recirculation Valve (ARV) protects centrifugal pumps from low-flow damage, dry running, overheating, and cavitation. It operates fully mechanically and requires no electrical power, sensors, or external controls.

Core Function

Installed on the pump discharge, the ARV ensures the required minimum flow at all times.

When system demand drops below the safe operating range, the valve automatically opens a bypass and recirculates excess flow back to a tank or suction line. When normal flow returns, the bypass closes.

This prevents:

Excess internal heat

Cavitation and erosion

Seal and bearing damage

Premature pump failure

The pump remains within its defined operating limits without external intervention.

Key Characteristics

Self-acting hydraulic operation

Integrated check and recirculation function

Fast, stable response to flow changes

Compact, robust construction

Suitable for high-pressure and high-temperature service

Material options such as carbon steel or stainless steel allow adaptation to various process media.

Typical Applications

The ARV is used where pump protection is critical and flow conditions fluctuate, including:

Power generation and district heating systems

Chemical and petrochemical plants

Water treatment facilities

Industrial processes with variable demand

In these environments, maintaining minimum flow is essential for operational reliability and equipment longevity.

As part of the portfolio of Schroeder Valves, the Automatic Recirculation Valve provides a reliable, maintenance-friendly solution for continuous centrifugal pump protection.