Hot water pumps
SAWA hot water pumps are single-stage, single-entry volute casing pumps in process design, with axial suction port and axial, vertically upwards pointing discharge port. The complete bearing bracket, including intermediate casing with shaft seal and impeller, forms an assembly unit and can be removed without dismantling the piping after removing the casing screw connection. In addition, the use of a dismounting coupling is recommended, since the motor can then also remain firmly screwed to the base plate.
For high temperatures up to max. 280 °C, the axis-centered version is used. This minimizes stresses and coupling misalignment caused by thermal expansion of the housings. Widened sealing surfaces and heat-resistant expansion bolts prevent leakage.
For high temperatures up to max. 280 °C, the axis-centered version is used. This minimizes stresses and coupling misalignment caused by thermal expansion of the housings. Widened sealing surfaces and heat-resistant expansion bolts prevent leakage.
Hot water pumps are used in medium and large heating systems. The design of our hot water pumps is based on many years of experience in the hot water sector and guarantees a long service life and operational reliability.
Hot water pumps for the following fluids
- Hot water
- Water / glycol mixture
Applications of hot water pumps
- for the heating of calenders
- Presses
- Textile Machinery
- larger building complexes at higher temperatures for hot water circulation
Features of the hot water pumps
- high process reliability
- Nodular cast iron GGG40.3
- high-temperature, heat-resistant cast steel 1.7706 EN 10213-2
- large dimensioned pump shaft and roller bearings
- low deflection of the shaft
- Bearing bracket with oil-lubricated, generously dimensioned rolling bearings outside the pumped medium
- Oil level in the bearing pedestal by automatic oil level control for constant level control
- Mechanical seal housing pressurized with cooling water
- Magnetic coupling for highest process reliability
Sealing
- Mechanical seal carbon/SiC pairing
- Magnetic coupling, depending on operating temperature with high temperature magnets
Hot Water Pumps
Manufacturer, dealer, service provider
Pump types of our hot water pumps
- Hot water pumps type NHLs, with volute casing made of GGG40.3, for temperatures up to 205 °C, operating pressure up to 22 bar
- Hot water pumps type NHL huh volute casing made of material 1.7706, for temperatures up to 238 °C, operating pressure up to 45 bar
- Hot water pumps type HPL/HPR huh volute casing made of material 1.7706, for temperatures up to 280 °C, operating pressure up to 80 bar
- Hot water pumps type NMR volute casing made of material 1.7706, temp. up to 238 °C, PN45 with magnetic coupling
- Hot water pumps type HPL/HPR huh volute casing made of material 1.7706, for temperatures up to 280 °C, operating pressure up to 80 bar
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