Watts DRV Series User Manual Download

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WattsIndustries.com

DRV, DRVM, DRVN,

DRVMN Series

Pressure reducing valves

Technical Data Sheet

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Summary of Contents for DRV Series

Page 1: ...WattsIndustries com DRV DRVM DRVN DRVMN Series Pressure reducing valves Technical Data Sheet ...

Page 2: ...T DRV Type Part No DN Weight Kg DRV 0501115 1 2 MM 0 9 DRV 0501120 3 4 MM 1 2 DRV 0501125 1 MM 1 7 DRV 0501132 1 1 4 MM 3 1 DRV 0501140 1 1 2 MM 5 1 DRV 0501150 2 MM 6 3 The DRV DRVM DRVN DRVMN Series pressure reducing valves are devices capable of reducing the pressure of the fluid downstream to a desired level and keeping it constant even in the presence of major variations in the flow rate and ...

Page 3: ...th M3A ABS50 Series pressure gauge Scale 0 6 bar DRVMN Type Part no DN Weight Kg DRVMN 0502615 1 2 MM 0 7 DRVMN 0502620 3 4 MM 1 0 DRVMN 0502625 1 MM 1 4 DRVMN 0502632 1 1 4 MM 2 2 DRVMN 0502640 1 1 2 MM 3 5 DRVMN 0502650 2 MM 4 3 Technical features DRV and DRVN Maximum upstream pressure 25 bar Downstream pressure outlet 1 5 6 bar Connections M M tailpiece Downstream pressure adjustment screw 4 Cl...

Page 4: ...as the inlet pressure acts on the two openings A and B see Fig 1 having the same cross section it is compensated and does not therefore result in any force on the pin plug system when the opening angle of the valve is varied The outlet pressure acts on the diaphragm and thus also on the pin plug system which is thus subjected to two contrasting forces the force exerted by the outlet pressure which...

Page 5: ...alues at the rated flow rate causing excessive pressure drop and outflow noise transmitted to the distribution network The flow rate speed diagrams help you to choose the diameter of the pressure reducing valve in the case of liquids see water or gases at pressures of 8 10 bar see air Example 1 cavitation Pressure reducing valve with Inlet pressure P1 14 bar Outlet pressure P2 3 bar From the cavit...

Page 6: ...e rapid damage of the internal parts If the pressure reducing valve is to operate in the red zone contact the Technical Department of Watts Industries Italia 20 18 16 14 12 10 8 6 4 2 0 0 1 2 3 Downstream pressure bar 4 5 6 7 A B C Inlet pressure bar A Cavitation Zone B Transition Zone C Work Zone Flow rate Speed m s D N 1 5 30 20 10 8 1 0 6 0 4 0 2 0 1 0 1 0 2 0 4 0 6 0 8 2 4 6 10 20 60 200 1000 ...

Page 7: ... Pressure drop bar l m 0 8 1 1 2 4 3 5 6 8 20 30 10 40 60 80 100 200 400 DRV50 DRV40 DRV32 DRV25 DRV20 DRV15 0 08 0 1 0 2 0 3 2 0 6 0 4 Pressure drop Flow rate bar l m 0 8 1 1 2 4 3 5 6 8 20 30 10 40 60 80 100 200 400 DRVN50 DRVN40 DRVN32 DRVN25 DRVN20 DRVN15 DRV DRVN ...

Page 8: ...ernal filter Noise 20db Class 1 in Germany PN 25 bar Adjustable downstream pressure 1 5 6 bar with calibration screw Maximum operating temperature 60 C 30 C DVGW Compliant with DVGW SVGW DRVM Series Diaphragm pressure regulator with compensated seat complete with tailpiece WATTS brand DRV Series with threaded male thread DN 1 2 2 Model with pressure gauge M1 ABS50 series scale 0 6 bar Brass body C...

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