FUNCTION
Pressure reducing valves are
installed to reduce & stabilize
inlet pressure of mains water
supply and to allow domestic
water heaters and appliances
to operate properly.
INSTALLATION INSTRUCTIONS FOR
PRESSURE REDUCING VALVES
(PRV and NRI-PRV)
15mm, 20mm & 25mm
PRV TECHNICAL SPECIFICATIONS
Materials:
Performance:
Body:
DR Brass
Pressure setting range:
250-750 kPa
Factory Setting:
500 kPa
Control Spindle: DR Brass
Max inlet Pressure:
1600 kPa
Seat:
Stainless Steel 316
Max working Temp.:
80 °C
Medium:
Water
Complies with
AS1357.2
Seals: EPDM Rubber
Flow rate as per Appendix M @ 700 kPa dynamic
Strainer:
Stainless Steel
PRV15 set pressure 500 kPa Flow rate 60 L/Min
set pressure 250 kPa Flow rate 22 L/Min
Spring:
Stainless Steel
PRV20 set pressure 500 kPa Flow rate 130 L/Min
set pressure 250 kPa Flow rate 30 L/Min
PRV25 set pressure 500 kPa Flow rate 155 L/Min
set pressure 260 kPa Flow rate 25.4 L/Min
set pressure 750 kPa Flow rate 165 L/pm
A
B
C
D
TM
WaterMark
MODEL NO.
A
B
C
D
PRV15F
68mm 22mm 78mm 34mm
PRV20F
68mm 22mm 78mm 34mm
PRV25F
70mm 25mm 83mm 38mm
PRODUCT RANGE
Pressure reducing valve sizes:
15mm (1/2”), 20mm (3/4”) &
25mm (1”)
MODELS:
PRV15F, PRV20F and PRV25F
Female BSP connections
MODELS:
NRI-PRV-15C &
NRI-PRV-20C
CxC connections.
