Description

HIGH PRESSURE DRAINAGE PUMPS

The range of submersible High Pressure Drainage pumps are specialty pumps that are designed with superior reliability in mind for rainwater tanks, and suitable for pumping drinking water with a neutral pH.

Using an automatic float, it detects when water is available. Primarily used with rainwater tanks, it’s also used for lawn and garden irrigation, treated effluent disposal and water transfer from wells.

Application

Non-potable rainwater applications
Lawn and garden irrigation
Sump emptying to higher heads
Treated effluent disposal
Water transfer from wells

Submersible sump pump with two and three impeller designs for higher pressure, up to 45m head.

WHY CHOOSE DAVEY SUBMERSIBLE DRAINAGE PUMPS?

Double mechanical seal, one in oil bath on motor and extra mechanical seal on pump

Superior reliability
Long service life

Corrosion resistant 304 stainless steel shaft, motor shell and fasteners.

Long service life

Cast 316 stainless steel motor caps and super tough engineered thermo plastic pump casing.

Outstanding corrosion resistance
Long life

Centrifugal multistage 2 and 3 impeller designs

Higher pressures and increased efficiency

Closed vane impellers with long engagement “D” drives

Positive operation
Long service life

Patented independently floating neck rings

Outstanding pump performance
Long pump life

Corrosion resistant hard wearing polycarbonate impellers

Long service life

Corrosion resistant stainless steel fine mesh suction strainer with large surface area

Prevents blockages of the pump by solids

In-built automatic thermal overload

Protects the motor in the event of blockage or voltage supply problems

HO7RNF oil resistant leads, 10 metres long with 3 pin power plug

Easy to connect to power supply
Longer life in dirty water

OPERATING LIMITS
Type	D42A/B	D53A/B
Capacities to	120 lpm	130 lpm
Maximum total head	32m	45m
Maximum submergence	12m	12m
Maximum pumped water temperature	40ºC	40ºC
Maximum soft solids	1.9mm O.D.	1.9mm O.D.
Outlet size (BSP)	1" F	1" F

MATERIALS OF CONSTRUCTION
PART	MATERIAL
Impeller	Glass filled polycarbonate
Lock nut	304 stainless stee
Pump casing	Glass filled polycarbonate
Diffuser and blanking ring	Glass filled noryl
Mechanical seal – pump	Carbon / ceramic
Mechanical seal – motor	Silicon carbide / ceramic oil in bath
Shaft seal elastomer	Nitrile rubber
Pump shaft	304 stainless steel
O-rings	Nitrile rubber
Motor shell	304 stainless steel
Bottom bearing housing	Cast 316 stainless steel
Upper motor cover	Cast 316 stainless steel
Handle	304 stainless stee
Fasteners	304 stainless stee
Float and power supply leads	HO7RN-F oil resistant

ELECTRICAL DATA
Type	D42A/B	D53A/B
Supply voltage	220-240V	220-240V
Supply frequency	50Hz single phase	50Hz single phase
Speed	2 pole, 2850rpm	2 pole, 2850rpm
Full load current (Run)	4.3A	5.7A
Locked rotor current (Start)	14A	14A
Input power (P1)	1.00kW	1.31kW
Output power (P2)	0.60kW	0.84kW
IP rating	X8	X8
Insulation class	Class F	Class F
Starting	P.S.C.	P.S.C.
Lead	10m long	10m long

Installation & Priming

Use a rope to position and retrieve the pump. Do not lower or retrieve the pump using the power lead as this may damage the cable entry seals, causing water leaks and unsafe operation.

Do not use this product for recirculating or filtering swimming pools, spas, etc. While these pumps are built to high safety standards, they are not approved for installations where people will be in the water while they are operating.

Do not pump abrasive materials. Sand and grit in the water being pumped will accelerate wear, causing shortened pump life

Keep your pump clean, particularly in situations where lint, hair or fibrous materials may get bound around the pump shaft. Regular inspection and cleaning will extend pump life.

Make room for the float switch to operate. Automatic models have a float switch to turn them on when the water level rises and turn them off again when it has been pumped down to the safe operating level of the pump. If the float switch is not free to rise and fall, correct pump operation may not be possible.

Do not run your pump dry. Non-automatic models must be switched off manually or by way of an external float/level switch when the water level is reduced to the top of the pump housing.