4
Where to use Check Valves and Foot Valves
Installations with a suction lift over 1m require a good quality
foot valve to avoid loss of prime. In this case, the poppet valve
inside the pump should be removed. Installations with flooded
suction require a gate valve so water supply can be turned off
for pump removal and servicing.
Abrasive Materials
The pumping of abrasive materials will cause damage to the
pressure system which will then not be covered by the guarantee.
A good quality non-return valve must be installed
in the pressure pump outlet pipework before the
hot water service. Failure to install this non-return
valve may result in pump damage. Such damage
is not covered by guarantee.
Connection of Mains Scheme or Town Water
Supply to either Suction or Discharge of Pumps
& Pressure Systems
Most Water Supply Authorities have strict
regulations regarding direct connection of pumps
to mains water supplies. In most cases an isolating
tank is required between mains supply and pump.
Davey also recommend this method. Directly
applied mains pressure can exceed pump operating
pressure and damage pump.
Davey Water Products
Pty Ltd can not accept
responsibility for loss or
damage resulting from
incorrect or unauthorised
installations.
IMPORTANT
For Automatic Pressure Pumps Installed with a Mains Pressure
Hot Water System.
