ARI Overflow valve Type 1911 series 22.753 ductile cast iron flange

The overflow in Fig. 1911 is an automatic, spring-loaded device that gradually opens as the differential pressure increases from a value to be set. The valve guide provides additional support for the spindle, ensuring continuous, stable operation. In addition, the stainless steel bellows ensure a complete seal between the housing and the spring cap.
The unit must be controlled on site; the overflow can be optionally equipped with a handwheel, so that adjustment is possible even without removing the spindle cover.

A commonly used application of Fig. 1911 is as a bypass via a pump where the overflow valve provides both a limitation of the pressure to be applied to the process and a minimum flow through the pump. This significantly reduces the risk of cavitation in the pump and therefore also the maintenance costs.

• Right-angled model.
• Handwheel for adjusting without removing the spindle cover.
• Housing made of steel or stainless steel.