Use the
following flow chart and technical specifications to determine
the correct Check Valve for your requirements
Because of the unrestricted Full Flow design of the Hansen CV you will often find you will be able to choose a smaller Hansen CV than most other check valves on the market.
As the Flow Chart is based on head loss across a fully opened diaphragm firstly refer to the table below headed "Flow Required to Fully Open Diaphragm" and check which valves sizes will not be fully open with your system flow. Example; 300lpm will not fully open a CV63. Then find your system flow across the bottom of the chart on this page and take a line vertically up the chart to size a valve with an acceptable head loss for your system.
Example; with a flow of 300lpm a CV50 will have a head loss of 1.1m and a CV32 will have a head loss of 4.4m.
Maximum
Recommended Working Pressure: @ 20°C
VALVE
CV25
CV32
CV40
CV50
CV63
psi
145
145
145
145
145
Bar
10
10
10
10
10
kPa
1000
1000
1000
1000
1000
Pressure
required for initial flow:
VALVE
CV25
CV32
CV40
CV50
CV63
psi
0.5
0.5
0.5
0.5
0.5
kPa
3.5
3.5
3.5
3.5
3.5
Flow
required to fully open diaphragm:
VALVE
CV25
CV32
CV40
CV50
CV63
l/min
110
142
158
225
330
Connection:
female BSPT
VALVE
CV25
CV32
CV40
CV50
CV63
Thread
Size
1"
1
1/4"
1
1/2"
2"
2
1/2"
Dimensions:
(mm)
VALVE
CV25
CV32
CV40
CV50
CV63
Width
69
87
99
123
152
length
102
122
133
164
198
Height
74
94
106
132
180
Installation: Valve
will operate at any angle. Head Loss: See chart above.
Maximum
operating temperature: 60°C
(Degrees Celsius) Note: All references to gallons are in imperial
gallons.
Hansen have tested all its products for use with cold water up to a maximum temperature of 60°C (140°F). We do not recommend the use of these products with temperatures higher than 60°C (140°F) as plastic expands due to temperature increases. Hansen cannot guarantee the products will perform when used with temperatures over 60°C (140°F). Hansen products that have failed in temperatures higher than 60°C (140°F) will not be covered by warranty.
The information given on this sheet is for guidance
only. HANSEN PRODUCTS (NZ) LIMITED accepts no responsibility
for the misuse or misapplication of this information
