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300 Series

300 Series


Dorot's 300 Series, state-of-the-art automatic control valves are designed to withstand the most demanding requirements of water system control. Dorot experts developed this technically advanced valve with capabilities - far beyond any other on the market. The following information will guide and asist you in the selection of the optimal DOROT Series 300 valve.

Features & Advantages

Features & Advantages

The capability to regulate near zero flow, as standard on all sizes, eleminates the need for a special low flow (throttling plug) or valve, while ensuring very low head loss in “fully open” position.

  • The flange (face-to-face) dimensions suit ISO Standards.
  • The valve has an internal floating shaft, allowing for frictionless operation. The unique design of the shaft provides for easy field maintenance.
  • The valve has a resilient seal disc, guided by a frictionless centering device.
  • The valve’s body is made of Ductile Iron, withstanding both high hydraulic and mechanical stresses.
  • The standard single - chamber valve provides smooth operation in sensitive regulation conditions. When required, conversion from a single to a double chambered valve is easily accomplished through the insertion of Dorot’s innovative separation disc, without the need to remove the valve from the pipeline during the conversion.
  • The valve is supplied with a replaceable Stainless Steel seat, which maintains excellent durability against erosion and ensures a drip-tight seal.
  • During valve closure the rate slows, preventing potential damage from water hammer or surges.
  • The 300 Series includes an optional valve position indicator, attached by a floating connection (ball & socket), resulting in smooth movement, with no wear or tear on the indicator seal.

Main Control Functions & Applications:

Waterworks Control Application

Electronic and Remote control:

  • EL - Electrically- activated valve
  • EC - Electronically- controlled valve

Pressure Regulating

  • PR  Pressure Reducing valve:
  1. PRM(T2)  Dual Set-Point, Timer-modulated pressure reducing valve 
  2. PRM(FM)  Electronically-Controlled, Flow-Modulated
  3. PRV / PRM(HyMod)  Hydraulically-Controlled, Flow-Modulated
  4. PRV /  PR(D)  Differential Pressure Reducing valve
  • PS  Pressure Sustaining valve:
  1. PS(R)  Pressure Sustaining/Relief valve
  2. DI  Differential- sustaining valve

Rate of Flow Regulating

  • FR - Flow-rate control valve
  • FE - Rupture- protection valve

Water Level Control

  • FL  Water-level control valve
  • FLDI1 and FLDI2  Water-level control valve - differential type
  • AL  Altitude control valve
  • FLEL  Electrically-activated level control valve
  1. AL / PR
  2. FLDI1 / PR
  3. FLDI2 / PR  Combination of water level and flow rate control
  4. AL / PS
  5. FLDI1 / PS
  6. FLDI2 / PS  Combination of water level and back-pressure control

Pumping Systems Control and Water Hammer / Surge Protection

  • CV  Check valve
  • NS  Two-Stages
  • BC  Pump control valve The pump motor is then switched-off by an electric interlink with the valve.

Optional Pump Control valve applications: 

  • BC/PS  Pump control and Back-pressure sustaining valve
  • BC/CD  Pump control valve with extended closure
  • BC/DI    Booster pump control
  • DW  Deep well control valve
  • QR  Quick-Relief Safety valve
  • RE  Surge-anticipating valve, Hydraulic activation
  • RE/EL  Surge-anticipating valve, Electric activation
  • SP  Surge-preventing closure

Fire Protection Control Application*

  • Deluge Valves
  • Monitor Valves
  • Pressure Reducing Valves
  • Pressure Relief Valves

*Additional information about the Dorot 300 series Fire Protection applications can be found in the Dorot Fire Protection catalogue