D15SDiaphragm-actuatedpressure reducing valve
3
EN0H-1049GE23R0712 •Subject t o change
InstallationExample
Connection size
DN 65 80
100
inch 21/2" 3"
4"
W*
mm 120 130 145
*Minimum distance fromwall to centre lineof pipework
InstallationGuidelines
• Install in horizontal pipeworkwith springbonnet directed
upwards
• Install shutoff valves
• The installation location shouldbe protected against frost
andbe easily accessible
o Pressure gauge canbe read off easily
o Simplifiedmaintenance and cleaning
• Install downstream of the filter or strainer
o This position ensures optimumprotection for the pressure
reducing valve against dirt
• Provideastraightsectionofpipeworkofat least five times the
nominal valvesizeafter thepressure reducing valve (inaccor-
dancewithDINEN806part 2)
Typical Applications
Pressure reducing valves of this type are suitable formulti dwel-
lingbuildings, industrial and commercial applicationswithin the
range of their specifications.
Pressure reducing valves shouldbe installed:
• If thestaticpressureexceeds themaximumpermissiblevalue
for the system
• If several pressure zones are requiredwhen apressurisation
system is used (pressure reducers on each storey of a buil-
ding)
• If pressure fluctuations in the downstream systemmust be
avoided
• To achieve constant inlet and outlet pressures on pumped
pressureboosting systems
• To reduce thewater consumption
FlowDiagram
Pressuredrop in valve
Flow rate
