Watts DRV Series, DRVM Series, DRVMN Series, DRVN Series, DRV Technical Data Sheet

DRV, DRVM, DRVN,
DRVMN Series

Pressure reducing valves

Technical Data Sheet

WattsIndustries.com

Description

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/or
pressure upstream, by modifying its pressure drops.

DRV

Diaphragm pressure reducing valve with compensated seat and complete with unions.
CW617N brass body and cap. Stainless steel strainer. Polymer valve seat.
Max. inlet pressure: 25 bar. Adjustable downstream pressure: 1.5÷6 bar. Can be used for
water, air and neutral gases up to 60°C, in accordance to DVGW up to 30°C. Pressure
drops less than 1.3 bar at characteristic flow rate.
Noise < 20 dB - Class 1 according with DIN 52218. LAG (DN 15÷32)

Compliant with DVGW, SVGW. Metallic materials in accordance with UBA LIST.

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

DRVM

Like DRV, but with M1-ABS50 Series pressure gauge (Scale 0-6 bar).

Type Part No. DN Weight (Kg)

DRVM 0501315 1/2” MM 0,9
DRVM 0501320 3/4” MM 1,3
DRVM 0501325 1” MM 1,8
DRVM 0501332 1.1/4” MM 3,5
DRVM 0501340 1.1/2” MM 5,1
DRVM 0501350 2” MM 6,3

R/DRV

Spare unions complete with nut and seals for DRV Series pressure reducing valves.

Type Part No. DN Weight (Kg)

R/DRV 0599001 1/2” MM 0,1
R/DRV 0599002 3/4” MM 0,2
R/DRV 0599003 1” MM 0,3
R/DRV 0599004 1.1/4” MM 0,5
R/DRV 0599005 1.1/2” MM 0,7
R/DRV 0599006 2” MM 1,1

GRDRV

Spare regulator unit complete with cartridge, diaphragm and O-Ring for DRV Series
pressure reducing valves.

Tipo Part No. DN Weight (Kg)

GRDRV 0599025 1/2” MM 0,1
GRDRV 0599026 3/4” MM 0,1
GRDRV 0599027 1” MM 0,2
GRDRV 0599028 1.1/4” MM 0,3
GRDRV 0599029 1.1/2” MM 0,9
GRDRV 0599030 2” MM 1,0

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DRVN

Patented diaphragm pressure reducing valve with compensated seat, outlet pressure
adjustable with a knob and external graduated scale for easy reading of set pressure.
Complete with unions. Body of CW617N sand-blasted stamped brass.
Stainless steel filter cartridge. Pressure gauge connection on both sides: G1/4”.
Maximum inlet pressure: 25 bar. Adjustable downstream pressure: 1,5 and 6 bar. Max.
operating temperature: 30°C. Can be used for water, air and neutral gases.
Noise < 20 dB - Class 1 according with DIN 52218

Compliant with DVGW. Metallic materials in accordance with UBA LIST.

Type Part no. DN Weight (Kg)

DRVN 0502515 1/2” MM 0,6
DRVN 0502520 3/4” MM 0,9
DRVN 0502525 1” MM 1,3
DRVN 0502532 1.1/4” MM 2,1
DRVN 0502540 1.1/2” MM 3,4
DRVN 0502550 2” MM 4,2

DRVMN

Like DRVN but with M3A-ABS50 Series pressure gauge (Scale 0÷6 bar).

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)

Downstream pressure gauge (DRV-M only) Pressure gauge Ø50 scale 0÷6 bar

Maximum operating temperature DRVN 30°C

Maximum operating temperature DRV 60°C (30°C DVGW)

Design features: DRV and DRVN

Body Sand blasted CW617N

Cap

Plug Brass CW617N

Inlet/outlet connections Brass CW617N

Diaphragm

Seal and O-Ring NBR - KTW - W270

Spring Galvanized steel

Adjusting screw and lock nut Brass CW617N

Filters Stainless steel

Clockwise rotation: increases pressure
Anticlockwise rotation: decreases pressure

Sand-blasted/(DRV) CW617N,
Reinforced polymer (DRVN)

NBR reinforced with nylon fabric compliant with KTW and
W270 - KTW

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