SHP series automatic recirculation valve for high pressure applications, low-wear operation and high load fluctuations. 

Areas of application include:

• high and extreme pressures

• highly variable operating conditions

• injection pumps

• descaling equipment

The minimum flow valves from Schroeder's SIP series are ideal for applications with pressures between 140 and 250 bar in systems with continuous operation, even at load points below the pump minimum quantity.

The automatic recirculation control (AR) valves from our SSV series automatically protect centrifugal pumps against wear, total loss and damage, which can occur due to dry running or during low-load operation. Our recirculation valves have historically proven exceptional reliability and low pressure loss over time. 

The Schroeder SMV series multi-functional valve is equipped with an automatic venting nozzle in addition to the minimum flow control and non-return device in the main feed. It permanently ensures that the stationary pump and standby pump are automatically vented and thus remain filled with liquid.

The SMA 63/64 automatic minimum flow system is a protective pump fitting. It automatically protects centrifugal pumps against damage that may occur as a result of the partial evaporation of the pump content when the pumps are operated under low load. 

The SR/SA valve type has been designed to control liquid media at high and very high pressures. The control valve is able to safely withstand pressures up to 600 bar and media temperatures of up to 400 °C. It is suitable for use both as a stand-alone shut-off valve (type SA) as well as for flow-control (type SR).

Multiport throttles are used to reduce the pressure and flow volume of liquid media. The multiport throttles are used in nominal widths ranging from DN20 to DN500, in pressure steps up to PN640 and up to a permissible media temperature of 400°C. The throttle housings are normally made of 1.0460 (C22.8) steel suitable for pressurized vessels, but can also be made of various types of stainless steel, depending on the medium.

Schroeder's back pressure device does not allow the static pressure in the upstream pipe to fall below a defined minimum value. It does this independently of the flow volume. This means that the specified minimum pressure is maintained, from the nominal flow rate to the smallest volume.

Schroeder's smartline range is an automatic recirculation valve for the protection of standard centrifugal pumps. The valves of the smartline range automatically protect the pumps against wear, total failure and damage caused by dry running or during low-load operation.