Direct Pressure Reducing DOROT valves
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tBorot Direct Pressure Reducing DO ROT valves amu mbubt MAIN FEATURES The pressure redudng valve maintains by varying its pressure drop, the outlet pressure at a constant value, when inlet pressure or the flow-rate are varying. and flow rate. The pressure redu-The Direct-acting FW'are used: - in water networks- to maintain a requested pressure in the supply main. in sanitary appliances to maintain the water pressure constantly beiow the max. permisable value. in water networks- to save water. By controlling the pressure of the taps excessive withdrawal of water and isavoided. Undetected Leakagesare redued. in compressed air Systems to keep the constant air pressure in the main, regardlessof fluctuations in pressure supplied by the compres՜rs To reduce and stabilize the pressure in the main, downstream of tanks or storage cylindiners

GENERAL The dorot pressure reducing valves Sries DPR, DPR-Fare of the balanced seat type. The inlet pressure, when acting on the two openings A and B with the same section, is compensated, and does not exert any force on the pin-plug system when the degree of valve opening changes. Two forces act on the diaphragm: The outlet pressure cr驢tes a force that tends to close the plug, and is topposed by the spring mechanical force that tends to open the plug. DPR Diaphragm pressure reducing valve with single balanced seat. Ensures min. pressure drops with high flow rates. Downstream pressure set...

CAVITATION Cavitation diagram The cavitation diagram shows three zones of valve opration in relation to the upstream and downstream pressures, namely: zone C: normal duty, no cavitation zone B: mdium duty, possible cavitation zone A: heavy duty, the valve cavitates. Continuous op驩ration in the red cavitation zone causes rapid dtrioration ot the internai parts. If the pressure reducing valve is to be used in the red zone, please contact DOROT Engineering Department. APPLICATION Water, air and neutral (non aggressive) gases. APPROVALS - DVGW approval (Arbeitsblatt W 375) - LGA approval (DVR15...

APPLICATION Water, air and neutral (non aggressive) gases. APPROVALS - DVGW approval (Arbeitsblatt W 375) -LGA approval (DRV5/N to DRV32/N) according to DIN 4109 class I (noise below 20 dB) - CSTB approval (NFP 43-006) (DRV15/N, DRV20/N). - KTW cerlification for ail malerials in contact with water DPR-N Diaphragm pressure reducing valve with single balanced seat. Ensures min. pressure drop AT high flow rates. Downstream pressure set by means of knob (3) with adjustment scale 1 to 6 bar. DPR-N-1/2 1/2" 12mm DPR-N-3/4 3/4" 20mm DPR-N-1 1" 25mm DPR-N-11/4 11/4" 32mm DPR-N-11/2 11/2" 40mm...

APPLICATION Water, air and neutral (non aggressive) gases. APPROVALS - ASSE, ANSI, CSA, UPC (USA) approvals DPR-U Bronze-body valve Models SIZE 12mm 20mm 25mm 32mm 40mm 50mm DPR-U-1/2 DPR-U-3/4 1/2" 3/4" 1" Diaphragm pressure reducing valve single seated, with spring. Ensures min. pressure drop with high flow rates. Provided with high-capacity DPR-U-1 DPR-U-11/4 11/4' DPR-U-11/2 11/2' DPR-U-2 2" Il 12 13 Key: filter. having a separate connection tor covenient cleaning. Downstream pressure set by means of screw (3). Fitted with by-pass valve, that allows the release ot excessive upstream...

Overall dimensions (mm) Flow rate - Pressure drop diagram