Centrifugal pumps are the "kings" among similar machines. They are certainly the best, because they have high, and even in all parameters, characteristics. Such units are used everywhere, for example, in production. In everyday life, they are most in demand from the owners of summer houses and country houses, motels and commercial facilities. Centrifugal pumps are used, for example, for the device of high-grade water supply, heating, sewage. To simplify the selection problem, we offer the best models of well-known manufacturers.
Top Centrifugal Surface Pumps
Wilo Star-RS 25/4 - circulation centrifugal pump
The Wilo Star-RS 25/4 circulating surface machine has a 1-phase electric motor and a wet-rotor centrifugal pump that is resistant to blocking currents.
The body is made of cast iron, the shaft is made of stainless steel, the wheel is made of polypropylene, the bearings are made of metal graphite. Installation simplified spring terminals. Characteristics: flow 3.5 m3 / h, pressure 4 m, power consumption 0.048 kW. The liquid is distilled at t from 10 to +110 ° С.
Pros:
- wear resistance and durability: used parts do not rust;
- energy efficiency: 3 speeds of rotation are provided;
- protection against voltage surges and overheating: the bearings in the “wet” rotor are cooled independently by pumped water;
- quiet running of the water pump Wilo Star-RS 25/4 (5.0-5.8 thousand rubles): sometimes it is necessary to lean the ear to the device to check for “working / not working”;
- ease of installation and ease of use: weight - 2.4 kg, insert length - 180 mm.
Minuses:
- over time (depending on the quality of assembly of the unit and proper operation) noise appears;
- in the bleed state, the pump may jam: depending on the pressure in the circuit.
Grundfos UPA 15-90 - booster centrifugal pump
The Grundfos UPA 15-90 surface booster unit with a consumption of 0.12 kW delivers 1.5 m3 / h and gives a pressure of 8 m, but according to the pump schedule, the higher the lifting height, the lower the performance: this regularity is always considered when choosing. In this case, optimal nominal values are selected for the operating point.
The pump works manually or after opening the valve automatically with a minimum inlet pressure of 0.2 bar and fluid temperature + 2 ... + 60 ° C. It is equipped with an asynchronous motor, a terminal box, a flow switch and a cast iron housing. Longevity - 10 years, warranty - 36 months.
Pros:
- ease of installation: light weight 2.6 kg, installation length 16 cm;
- corrosion resistance and long service life: the rotation wheel is made of a composite, separating the sleeve and the shaft, as well as the bearings are made of stainless steel and Al2O3;
- noise level: not more than 35 dB;
- protection: regular working - against thermal overload; in automatic mode - from the distillation of air;
- reasonable price: you can buy a water pump Grundfos UPA 15-90 for 5.2-8.0 thousand rubles.
Minuses:
- the possibility of a standard breakdown - automation over time will / will not “fail”;
- analogue of stainless steel, which naturally costs more: the price of a water pump Grundfos UPA 15 - 90 N - 12.0-12.9 thousand rubles.
Top Centrifugal Submersible Pumps
DAB DIVERTRON 1200 - Well Centrifugal Pump
DAB DIVERTION 1200 is a multistage centrifugal submersible device. It is immersed at 10 m, consumes 1.1 kW of electricity, and the pressure creates 48 m. The case is made of plastic, the filter is made of stainless steel, and the motor case is made of aluminum.
Installation - vertical, control of water marks - automatic. The design includes: check valve, flow sensor, pressure switch. Works with the help of an electronic board from a single-phase network (220 V).
Pros:
- high throughput: 5.7 m3 / h of pure water with temperature ≤ + 35 ° С;
- comfort of operation: there is no need for maintenance - the well pump DAB DIVERTION 1200 works in the mode of automatic operation;
- corrosion resistance and durability: production materials - technopolymer, aluminum, stainless steel;
- idle protection;
- ease of carrying and mounting: the device weighs little - 11.0 kg;
- adequate price: price - 18.1-23.2 thousand rubles.
Minuses:
- For good repair, voltage drops are destructive: in order for the device to last a long time, it is necessary to install a stabilizer;
- 2-second delay in the supply of water: the reason - the pressure drop when opening the valve.
GILEKS "Vodomet" PROF 55/75 House - borehole submersible pump
The submersible borehole unit Dzhileks Vodomet PROF 55/75 DOM includes a 10-stage pump, a single-phase motor, a control panel and a 50 l hydroaccumulator.
The equipment includes shut-off and control valves with a special sensor, pressure gauge and check valve. The system pumps clear water (t up to +35 ° C), maintains a pressure of 2 ... 5 bar. Consuming 0.9 kW of electricity, produces 3.3 m3 / h. Sinking to 30 meters creates a pressure of 75 meters.
Pros:
- total protection system, including overcurrent, voltage surges and idling;
- ease of management and control: all important parameters are displayed on the monitor; settings can be adjusted;
- availability of soft start, non-return valve, pressure gauge, mounting hooks, cable 30 m long;
- wear resistance, efficiency, durability;
- tempting quality / price ratio: water pump Dzhileks Vodomet PROF 55/75 DOM costs 18.6-22.3 thousand rubles.
Minuses:
- certain installation inconveniences;
- in a hydroaccumulator with a large pressure the membrane bursts - sometimes.
Patriot F 900 - Submersible Drainage Pump
The submersible drainage device Patriot F 900 has a plastic housing with a suction window, a float switch, a vertically directed pipe, an electrical cord (10 m) and a carrying handle.
It operates in the mode: 2 hours - work, 1/4 hours - break. Features: immersion depth of 7 m, lifting height of 10 m, power consumption of 0.9 kW. The temperature of the transfer fluid with fragments with a diameter of up to 35 mm should not be higher than +40 ° C.
Pros:
- high throughput of dirty water: 14 m3 / h;
- availability of adjustment of the maximum and minimum levels: adjusted by the length of the cord float;
- overheat protection and protection against running without water;
- corrosion resistance of materials;
- small weight (5.8 kg) and price: the Patriot F-900 water pump is offered for 2.6-3.3 thousand rubles.
Minuses:
- a significant drop in pressure (by 60%) with a decrease in voltage of only 10%;
- overload when winding on the wheel and shaft fragments of the fibrous structure.
Elpumps BT 5877 K INOX - fecal submersible pump
The centrifugal submersible device Elpumps BT 5877 K INOX has a shredder for cutting fiber particles with a diameter of 35 mm. With an immersion depth of 5 m, consuming 1.2 kW of electricity, it creates a liquid rise of 14 m.
In equipment: the case from cast iron and stainless steel; level float switch; ceramic silicone sealant for electrical protection. Convenience of operation is promoted by low degree of noise: not higher than 75 dB.
Pros:
- resistance to corrosion and long service life: the device is made of many stainless metals;
- the presence of a cutting nozzle to facilitate the smooth absorption of fluid;
- high flow capacity: the performance of the Elpumps BT 5877 K INOX submersible pump is 20 m3 / h;
- ease of installation and use: low weight (13.0 kg) and low noise level;
- protection against idling, overheating and jamming of the blades;
- automatic mode of operation and simplicity in maintenance.
Minuses:
- relatively expensive: 15.8-19.1 thousand rubles.
- Comfortable, but structurally weak handle.
It will be interesting to friends too
