Comparison Sprut GPD 25-4S-180 5.1 m
1 1/2"

180 mm
vs Sprut LRS 25-4S-180 4.7 m
1 1/2"

180 mm

Clear Table
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	Sprut GPD 25-4S-180 5.1 m 1 1/2" 180 mm	Sprut LRS 25-4S-180 4.7 m 1 1/2" 180 mm
	from $31.60 up to $40.56 Outdated Product	from $26.35 up to $34.28 Outdated Product
all specs only differences
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Main function	central heating	central heating
Design	single head	single head
Pump type	centrifugal	centrifugal
Rotor type	wet	wet
Specs
Max. flow	2500 L/h /2000/1500 L/h/	3300 L/h /2700/2000 L/h/
Max. head	5.1 m /4.6/3.5 m/	4.7 m /4.5/3.9 m/
Max. operating pressure	10 bar	10 bar
Minimum fluid temperature	-10 °С	-10 °С
Max. fluid temperature	110 °С	110 °С
Features	3 speeds	3 speeds
Motor
Max. power consumption	62 W /48/32 W/	65 W /46/30 W/
Mains voltage	230 V	230 V
Motor type	asynchronous	asynchronous
Shaft arrangement	horizontal	horizontal
Shaft material	cermet	cermet
Connection
Connection type	thread	thread
Inlet/outlet arrangement	coaxially	coaxially
Inlet	1 1/2"	1 1/2"
Outlet	1 1/2"	1 1/2"
More specs
Pump housing material	cast iron	cast iron
Impeller material	plastic	plastic
Country of brand origin	Ukraine	Ukraine
Protection class	IP44	IP44
Insulation class	H	H
Port-to-port length	180 mm	180 mm
Dimensions (HxWxD)	124x132x180 mm	96x136x180 mm
Weight	2.3 kg	2.3 kg
Added to E-Catalog	november 2014	november 2014

Max. flow

The maximum flow of a pump is the amount of liquid it can pump in a certain amount of time.

Features of choosing the optimal performance option depend primarily on the purpose of the pump (see above). For example, for DHW recirculation models, the pump performance should not exceed the performance of the water heater. If the water heater is capable of delivering 10 litres per minute to the DHW circuit, then the maximum pump performance will be 10*60=600 L/h. The basic formula for calculating the performance of a heating system takes into account the power of the heater and the temperature difference at the inlet and outlet, and for the cold water system — the number of points of water intake. More detailed information about the calculations for each application can be found in special sources, and it is better to entrust the calculations themselves to professionals.

Max. head

The head can be described as the maximum height to which a pump can lift liquid through a vertical pipe without bending or branching. This parameter is directly related to the pressure that the pump produces: 10 m of head approximately corresponds to a pressure of 1 bar (do not confuse this parameter with operating pressure — see more about it below).

The head is one of the key specs for most circulation pumps. Traditionally, it is calculated based on the difference in height between the location of the pump and the highest point of the system; however, this principle is relevant only for units that boost the pressure of cold water(see "Suitable for"). Circulation pumps for heating and DHW work with closed circuits, and the optimal pressure depends on the total hydraulic resistance of the system. Detailed calculation formulas for the first and second cases can be found in special sources.

Max. power consumption

The electrical power consumed by the pump during normal operation and maximum performance.

This indicator directly depends on performance — after all, for pumping large volumes of water, an appropriate amount of energy is needed. And the power depends on two main parameters — electricity consumption and the load on the power grid, which determines the connection rules. For example, pumps with a power of more than 5 kW cannot be connected to ordinary household sockets; more detailed rules can be found in special sources.