Waterworks

DOROT S500 FLDI/FR (PR)

Diaphragm-actuated, Rigid Seal, Y-pattern, Differential Float Level Control & Flow Control Valve

DOROT S500 FLDI/FR (PR), is a Diaphragm-actuated, Rigid Seal, Y-pattern, Differential Float Level Control & Flow Control Valve. This float-pilot water level control and flow control valve, opens when water levels reach a preset opening height, and automatically regulates to limit flow values. In cases where water level values are lower than the set value, the valve will open to minimize losses. The differential between opening and closing levels is adjustable.

Downloads

BIM Models

Technical Specifications

Size Unit

Size range

DN40 - DN150 (1½”- 6")

Pressure rating

PN16

Working temperature

0ᵒ – 60ᵒ C

End connection type

Threaded, Flanged, Grooved

Standard construction materials

Body and Cover

Ductile Iron

Internal Parts

Stainless Steel and Polymer

Seals + Diaphragm

EPDM

* Other optional materials available upon request

Features & Benefits

Regulates at a stable mode, down to near-zero flow
  • Ensures consistent performance without the need for specialized low-flow adjustments, such as a V-port or bypass valve
Low-friction internal trim design, guided by LTP (Linear Throttling Plug)
  • Provides high reliability and operational stability
Compact design
  • Short face-to-face valve dimensions save on installation space, ideal for compact system layouts
Stainless Steel control port sleeves
  • Protects against corrosion and blockage, reducing time and cost on maintenance
Self-cleaning inline filter
  • Cuts down on frequency of inspections and maintenance, significantly reducing labor costs
Safety air release
  • Easily removes air from the control valve chamber, to ensure stability and optimal system performance
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