Municipal & National Water-systems

The Dorot Series 300 Pressure-Reducing (’30-PR’) valve, activated by the pressure of the pipeline, The valve reduces high upstream-pressure to a steady, pre-determined and lower downstream pressure, regardless of fluctuations in upstream-pressure or rate of flow. I case the downstream-pressure exceeds the set value, the valve will close drip-tight.

• Better performance:

Regulates at a stable mode, regardless of valve-size, down to near-zero flow. Thus, eliminating the need for a special low flow plug-design (such as ‘V-port’) or a bypass valve.

‘Floating’, low-friction internal-trim design, guided by unique LPT® device.

• Increased reliability:

All control ports are fitted with SST sleeves for preventing corrosion-blockage

Pre-shaped reinforced diaphragm – for easier assembly and improved longevity.

• Reduced periodic inspection\maintenance labor:

The control-trim is fitted with a self-flushing, inline control-filter.

Easy in-situ adjustment and maintenance.

• Versatility:

• Accurate, stable control from no-flow to full flow Simple and reliable design
• Exceptionally low losses at high flow
• WRAS Approval no. 04251

The valve maintains a preset downstream pressure, regardless of upstream pressure or flow rate fluctuation. The main valve is controlled by either a 3-way pilot valve (allowing full opening when downstream pressure drops below the set-point), or by a 2-way pilot valve (creating minimal pressure differential in open position).

The Dorot Series 300 Duel set-point Pressure-Reducing (’30-PRM’) valve, is an automatic, pilot controlled pressure reducing valve.

The valve will regulate downstream pressure to one of two set-values. The set-value is selected by an electric command sent from a PLC controller to the solenoid-valve in the control-trim of the valve. Both pressure values can be easily adjusted by the user. The electric command can be optionally overridden by a manual selector valve.

Dorot model 'HyMod' is an automatic pilot controlled, flow-modulated pressure reducing valve activated by the pressure of the pipeline. The valve reduces upstream pressure to a downstream pressure that increases or decreases simultaneously with the demand flow. The pressure into the zone is continually adjusted according to the zone’s actual demand, thus compensating for the system loss. The pressure-flow profile can be adjusted The Dorot HyMod will control from no flow, to maximal full open flow without any chattering or slamming.

Dorot model "PR(3w)" is an automatic, pilot controlled, pressure reducing valve, activated by the pressure of the pipeline. The valve reduces upstream pressure to a steady, predetermined downstream pressure, regardless of fluctuation of upstream pressure and flow rate. Should downstream pressure exceed the required set-point (due, for example, to a halt in pipeline flow), the valve closes drip-tight. If upstream pressure falls to the preset downstream value, and throttling is unwanted, the valve fully opens, with negligible pressure loss. The valve’s response to pressure variation is very rapid, due to its double chamber control. 

• Model 30D, 30AD for medium pressure (up to 16 bar / 230 psi)
• Model 31D,31AD for high pressure (up to 25 bar / 350 psi)

Dorot Series 300 Electronic Control Valve (’30-EC’) is an automatic, solenoid control valve, activated by the pressure of the pipeline. The valve controls by the versatile DOROT “ConDor” controller that enables all control functions, or combination of functions, at extreme accuracy. Can be controlled by any pulse- activating controller.

• Better performance:

Regulates at a stable mode, regardless of valve-size, down to near-zero flow. Thus, eliminating the need for a special low flow plug-design (such as ‘V-port’) or a bypass valve.

‘Floating’, low-friction internal-trim design, guided by unique LPT® device.

• Increased reliability:

All control ports are fitted with SST sleeves for preventing corrosion-blockage

Pre-shaped reinforced diaphragm – for easier assembly and improved longevity.

• Reduced periodic inspection\maintenance labor:

The control-trim is fitted with a self-flushing, inline control-filter.

Easy in-situ adjustment and maintenance.

• Versatility:

A standard and simple single-chamber valve design, provides smooth operation.  Conversion to a double chamber is a patented option.

• Can perform any control function
• Highly accurate and reliable electronic control • Low power actuation
• Simple and reliable design
• Controlled by Dorot ConDor valve controller or by a third party controller

A specialized controller, designed for the control of hydraulic control valves by the use of dual or quadro solenoid-valves arraignment, for the implementation of a wide range of control applications and combinations of thereof.

For applications in SCADA Systems please consult Dorot Application Engineering Team for further information and tailor-made solutions.