Injectors require water at the correct pressure and flow rate. In chlorine gas dosing, this water flow creates the vacuum used to draw in the gas and introduce it into the water. A properly calibrated drive water supply thus provides the hydraulic basis for the reliable operation of the dosing system.
With the IN-VB series, SPECK offers multistage centrifugal pumps for the drive water supply to public swimming pools. The stainless steel hydraulic system caters for a range of pressure and flow requirements. The selection is made to suit the injector, the existing pressure conditions and the water quality. The result is a pump solution that integrates seamlessly into your treatment system and supports cost-effective plant operation.
Benefits of SPECK
Supply pressure. Supply injectors. Support processes.
The right drive water capacity for your processing technology.
A carefully selected pump combines a reliable supply to the injector with economical operation and suitable materials.
Application
Pressurised water supply for chlorine gas injectors – Injector-based dosing systems – Disinfection technology in indoor and outdoor swimming pools – Water treatment in leisure and wellness facilities – Modernisation of existing pressurised water systems
Products
The right pump for your application
Die vertikalen, mehrstufigen Kreiselpumpen sind normalsaugenden Hochdruckkreiselpumpen und zeichnen sich durch einen hohen Wirkungsgrad sowie eine lange Lebensdauer aus. Alle medium berührten Teile sind aus Edelstahl.
Die vertikalen, mehrstufigen Kreiselpumpen sind normalsaugenden Hochdruckkreiselpumpen und zeichnen sich durch einen hohen Wirkungsgrad sowie eine lange Lebensdauer aus. Alle medium berührten Teile sind aus Edelstahl.
Technical Specifications
The design is based on the injector’s water requirements, the pressure conditions and the properties of the fluid being pumped.
Interaction between the pump and the injector
The drive water pump provides the required water flow and pressure. In the injector, the accelerated water flow creates the vacuum required to draw in and mix the gas.
The following factors are taken into account in particular when selecting the pump:
- Required drive water flow and inlet pressure at the injector
- Available inlet pressure at the pump
- Back pressure downstream of the injector
- Pressure losses in pipework and fittings
The selection is based on the pump and injector performance curves.
IN-VB series multistage centrifugal pumps
The IN-VB is a vertical, normal-suction high-pressure centrifugal pump. Its multi-stage hydraulic design allows for the selection of different pressure stages to suit the specific operating point.
The design incorporates ceramic, wear-resistant and fluid-lubricated bearings, as well as a shaft seal in the form of a mechanical seal. The pumps are intended for clear liquids that do not chemically or mechanically attack the materials used.
Performance ranges and operating limits
Depending on the size and version, the IN-VB series offers the following range:
| Feature | IN-VB series |
|---|---|
| Maximum flow rate | Up to 160 m³/h |
| Maximum head | Up to 250 m |
| Maximum operating pressure | Up to 25 bar |
| Fluid temperature | −15 to +100 °C |
These specifications describe the range of the series. For the specific drive water supply, the performance curve and operating limits of the selected pump apply; the maximum values are not reached simultaneously.
Stainless steel and seals suitable for the medium
For sizes IN-VB 2 to 60, the casing, impellers and guide vanes are made of 1.4301 stainless steel. In the corresponding IN-VB-S versions, 1.4404 stainless steel is used for these components.
The standard version uses EPDM elastomers, whilst the S version uses Viton. The material combination of carbon/silicon carbide is specified for the mechanical seal. Other seal and elastomer versions are available on request.
The selection takes into account water composition, salinity and temperature.
Drive and connection options
The series is specified for 50 Hz with a rated speed of approximately 2,850 min⁻¹, motor protection class IP55 and insulation class F. Depending on the version, single-phase and three-phase motors are available; from 3 kW upwards, PTC thermistors are included.
Depending on the size and variant, oval flanges, round flanges or Victaulic connections are available. This allows the pump to be adapted to the intended pipework.
BADU Kundenberater
You can contact our BADU sales team Monday to Thursday from 8.00 am to 4.30 pm and on Friday from 8.00 am to 2.00 pm.