Comparison SADKO GWP-4030 vs SADKO GWP-40

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	SADKO GWP-4030	SADKO GWP-40
	from $118.62 up to $134.15 Outdated Product	from $135.79 up to $140.00 Outdated Product
all specs only differences
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Suitable for	clean water /slightly polluted/	clean water /slightly polluted/
Specs
Maximum performance	19000 L/h /maximum/	19000 L/h /maximum/
Maximum head	30 m /maximum/	20 m /maximum/
Pump type	centrifugal	centrifugal
Suction type	self-priming	self-priming
Suction height	8 m	8 m
Maximum particle size	8 mm	8 mm
Suction system	single-stage	single-stage
Outlet size	1 1/2" /40 mm/	1 1/2" /40 mm/
Inlet hole size	1 1/2" /40 mm/	1 1/2" /40 mm/
Engine
Maximum power	1470 W	1470 W
Power source	petrol	petrol
Fuel tank volume	1.6 L	1.5 L
General specs
Country of origin	Slovenia	Slovenia
Weight		8.5 kg
Added to E-Catalog	november 2014	november 2014

Maximum head

The maximum head generated by the pump. This parameter is most often indicated in meters, by the height of the water column that the unit can create — in other words, by the height to which it can supply water. You can estimate the pressure created by the pump using a simple formula: every 10 m of head corresponds to a pressure of 1 bar.

It is worth choosing a pump according to this parameter, taking into account the height to which it should supply water, as well as adjusting for losses and the need for pressure in the water supply. To do this, it is necessary to determine the difference in height between the water level and the highest point of water intake, add another 10 to 30 m to this figure (depending on the pressure that needs to be obtained in the water supply), and multiply the result by 1.1 — this will be the minimum pressure required.

Fuel tank volume

The volume of the fuel tank in the water pump with an internal combustion engine (see "Power source"). Knowing this parameter and fuel consumption, it is possible to determine the maximum operating time of the unit on a single refill. Of course, the larger the tank, the longer the pump can work without refuelling, all other things being equal; on the other hand, a large capacity significantly affects the dimensions and weight of the device.