www.nkp-centretrading.com/ Dorot Pressure Reducing Valves - http://www.nkp-centretrading.com

http://www.nkp-centretrading.com

Go to content

Main menu

Dorot Pressure Reducing Valves

Control Valve > DOROT

Dorot Construction & Industry.
Download Technical Data :http://www.dorot.com/index.php?page_id=85


 
 
  • Dorot Pressure Reducing Valve.

- 100 Series
- 300 Series
- 500 Series
- Air Valve
- Mechanical Valve
- Pilots and Accessories

  • 100PR Pressure Reducing Valve.


 

Description
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 upstream pressure drops
below the pressure set-point), or by a 2-way pilot valve (creatinga minimal differential in open position).
Features
•   Accurate, stable control from no-flow to full flow
•  Simple and reliable design
•  Exceptionally low losses at high flow
•  WRAS Approval no. 04251
Purchase Specifications
The valve will be hydraulic, direct sealing diaphragm type, which allows inline maintenance. No stem, shaft or guide
bearing will be located within the water passage.
The valve will be activated by the line pressure or by an external hydraulic or pneumatic pressure. The valve will
be operated by a pressure reducing pilot valve to achieve constant outlet pressure, regardless of upstream pressure
or flow variations. The valve and the controls will be a Dorot Series 100 valve or similar in all aspects.
Quick Sizing
•   Valve size same as line or one size smaller
•   Maximum flow speed for continuous operation 5.5 m/sec (18 ft/sec)
Design Considerations
•   The valve should be suited for the maximal flow and allowed headloss
•   In case upstream pressure may drop to the required set pressure, select 3-way control pilot
•  Large pressure differentials may cause cavitation damage. Consult Dorot for solutions if such conditions are expected

Optional Control System Components:
1.   Main Valve
2.  Self-flushing filter
3.  Cock valve*
4.  Manual over-ride selector valve*
5.  3-way pilot valve (other types are optional).

* Optional component

Typical Application
Dorot Pressure Reducing Valve reduces varying supply
pressure to a stabilized downstream pressure..


  • 300 Series Pressure Reducing Valve.

300PR - Pressure Reducing Valve

 

PR - Pressure Reducing Valve
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 theset-point), or by a 2-way pilot valve (creating a pressure differential in any condition).

  • 300 Series Pressure Reducing Valve.

300PR(D) - Proportional Pressure Reducing Valve

 

PR(D) - Proportional Pressure Reducing Valve.
The valve maintains a constant pressure ratio between its upstream and downstream pressure,
regardless of upstream pressure or flow rate values.No external control device is needed

  • 500 Series Pressure Reducing Valve.

500PR - Pressure Reducing Valve

 

PR - Pressure Reducing Valve
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).

  • 500 Series Pressure Reducing Valve.

500PR/EL - Electrically Operated - Pressure Reducing Valve

 

PR/EL - Electrically Operated - Pressure Reducing Valve
The valve is a Pressure Reducing Valve which maintains a preset downstream pressure,
regardless of upstream pressure or flow rate fluctuation. The valve’s opening is controlled
by an electric solenoid valve. This either causes the valve to open (and regulate) or to close.

 
Back to content | Back to main menu