Schroeder – SSV Automatic Recirculation ValveEnquire Now

Schroeder 8211 SSV Automatic Recirculation ValveSchroeder 8211 SSV Automatic Recirculation Valve

BRAND: SchroederCATEGORY: Pump Protection Valves

The SSV Automatic Recirculation (ARC) Valve also known as Leak Off Valves is a pump protection valve that automatically provides protection for high pressure multi-stage centrifugal pumps. Damage can occur during dry running or during low load / low flow operation. Overheating, wear, cavitation to total loss and severe damage, are some of the signs that you need an automatic recirculation valve. Should the flow through the pump fall below the required minimum as specified by the pump manufacturer, the bypass system opens and the process liquid is recirculated providing the required minimum flow protection for the pump. They are not susceptible to interference and require very low maintenance. Full repair and reconditioning facilities are available at our Vereeniging and Durban branches. In addition this purely mechanical device does not require external power or any kind of control unit, thus ensuring low operating costs and low Total Cost of Ownership (TCO). Eskom, Sasol, Sulzer, KSB, Weir, Flowserve and many others rely on Schroeder to protect their multi-stage boiler feedwater and process pumps. Contact one of our technical specialists for a quote today or download the brochure to learn more.

Specifications

SeriesSSV
Design

Automatic Recirculation Valve

Features
  • Reliable long service life
  • No special maintenance
  • Low pressure losses
  • Vertical or horizontal installation
  • Max DP of 250bar
  • Self acting – controlled by medium (no external power or instrumentation required)
  • Modulating and low-wear minimum volume controls as a result of the rotary valve design
  • Non return check-valve function in the main line prevents pump damage by back flow from the process line at shut-off and standby
  • Multi-level pressure and volume reduction in the secondary outlet ensures low cavitation levels
Size
Range

25mm to 600mm / 1” to 24”

Pressure
Rating

PN 10 – 400 / ANSI 150 – 2500

Temperatures-250°C to 400°C
End
Connections
Flanged
Body
Materials

Carbon steel / Stainless Steel Other materials on request

Seat
Materials
Forged stainless steel / Hardfaced / Stellited
Options &
Accessories
  • PTFE / KALREZ seals to suit media
  • Check in bypass line
  • Start up trim (during cleaning and plant start-up)
  • Warm up branch
  • Pressure gauge branch
Applications

For protection of multi stage centrifugal pumps during minimum flow conditions by preventing overheating, excessive noise, instability and cavitation. Ideally suited for the protection of boiler feedwater pumps.

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