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Our experience in the fluids industry has made INDUSTRIAL PUMPING the preferred supplier of pumps, filtration and fluid control equipment, to many world respected mines, councils, oil palm mills, sugar mills, public utilities, and factories, in Australia, Papua New Guinea, and South Pacific Islands.
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DOROT Automatic Control Valves |
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Diaphragm actuated, hydraulically operated, automatic control valves
Features and Benefits
The capability to regulate “near zero” flow, as standard on all sizes, which completely eliminates the need for a low flow bypass valve.
The hydro-dynamically designed structure enables very low head loss in the ”fully open” position.
A standard valve model fits a wide variety of control applications using Dorot pilots.
An especially short flange face-to-face length, ensures maximal saving in installation space.
An innovative internal trim ensures frictionless operation.
Easy maintenance and high reliability.
During closing procedure, the pace slows down preventing damage that may occur from slamming or water hammer \ surges.
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Remote Control & Check Valves
EL - Solenoid Controlled Valve
A 3-way solenoid valve, activated by an electric current or an electric pulse, opens or closes the main valve. The standard valve is supplied in the "normally closed" position. The "normally open" position is optional. Electric activation can be added to other control valves on request.
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CV - Hydraulic Check Valve.
The valve is in the "open" position when the upstream pressure is higher than the downstream pressure. Should the upstream pressure drop below of the downstream pressure, the valve will instantly lose, preventing return flow .Opening and closing speeds can be adjustable.
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Pressure Reducing Valves
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 a pressure differential in any condition)
Click on photo to download a pdf data file, 55kb
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PR/EL Valve.
The valve is a PR-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.
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Pressure Sustaining and Relief Valves
PS(R) - Pressure Sustaining Relief Valve
The valve maintains upstream pressure, regardless of flow rate variations. The valve will be in the "closed" position if the upstream pressure drops below the set-point and will fully open when the upstream pressure exceeds the set-point.
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QR - Quick-Relief Safety Valve
The valve instantly opens when the pressure in the pipeline exceeds the safe level, thus relieving excessive pressure from the network. When the pressure returns to normal, the valve closes slowly, at an adjustable pace.
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Flow Rate Control Valves
FR - Flow Rate Control Valve
The valve limits the flow rate in the network to a preset level, regardless of upstream pressure variations. The valve fully opens when the flow rate drops below the set-point.
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FE - Excessive Flow Shut-Off Valve
The valve closes when the flow rate exceeds the normal value (due to pipe rupture, for example).Optional Addition: Surge-Preventing Closure (SP).
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Level Control Valves
FL - Modulating Float Controlled Valve
The main valve is controlled by a float valve, located in the tank or reservoir and set at the required maximum water level. The valve maintains the maximum level continuously.
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FLD - Differential Float Valve
A float valve controls the main valve, closing it when the water reaches maximum level, and opening it when the water drops to its preset minimum level. The differential between the maximum level and the minimum level is adjustable.
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AL - Altitude Control Valve
The main valve is controlled by a highly sensitive pilot, located outside the tank. The pilot opens or closes the valve in response to the static pressure of the water. The pilot allows for differential adjustments between the maximum and minimum level.
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