Inline pump with variable frequency drive Termojet TBE 65-34/2 (7.5 kW)

Termojet TBE 65-34/2 variable frequency drive inline pump — a vertical «backpack»-type inline pump with a removable block and built-in variable frequency drive for industrial constant-pressure water supply systems. Power 7.5 kW, connection DN65, flange PN16, maximum flow rate 60 m³/h, maximum head 40 m. Inlet and outlet are on the same axis — direct installation into the pipeline without reworking connections.

Technical Specifications

Operating Principle and Control

The built-in variable frequency drive automatically adjusts the pump speed to maintain the set pressure in the system regardless of current water draw. When flow rate increases, the pump raises its speed; when flow decreases, it lowers speed. The constant-pressure system ensures uniform head at all draw-off points regardless of load.

«Backpack» design (removable block): the hydraulic unit and electric motor form a single block that can be removed without dismantling the pipeline — convenient on-site servicing. Flanged connection DN65 PN16 provides a reliable joint in industrial conditions.

Applications

• Industrial water supply systems — maintaining constant pressure under variable water draw at large facilities.
• Fire suppression and sprinkler networks where stable pressure is a critical safety parameter.
• Water supply for multi-storey and large commercial buildings with a dedicated pump station inlet.
• Heating and cooling systems of large industrial facilities with a heat-transfer medium temperature up to 120 °C. For compatible equipment — Termojet Mega series and Termojet pump groups.
• Replacement of an obsolete DN65 pump in existing pump stations — direct PN16 flanged connection.

Advantages of Variable Frequency Control

A pump without a variable frequency drive operates at constant speed regardless of system load — at low water draw, excess energy is wasted. The TBE 65-34/2 with built-in VFD consumes exactly as much as needed to maintain the set pressure: when flow is halved, power consumption decreases approximately fourfold (cubic relationship). At large facilities with long operating hours, annual electricity savings are substantial.

• Built-in VFD — stable pressure without surges, energy savings.
• DN65 PN16 flange — reliable installation in industrial conditions.
• Removable block — convenient servicing without pipeline dismantling.
• Temperature up to 120 °C — suitable for high-temperature systems.

TBE 65-34/2 and Heat Pump Systems

TBE 65-34/2 is an industrial pump for water supply and large thermal systems. For commercial buildings with an industrial-class heat pump, it can be used as a primary circuit or water supply pump. For smaller heating circuits — see the APM-F series. For heat pumps — tjheatpump.com.ua.

Frequently Asked Questions

Is a three-phase 380 V network required?
Yes. The TBE 65-34/2 with 7.5 kW power is supplied from a three-phase 380 V / 50 Hz network. Make sure the appropriate connection is available before ordering. For single-phase networks, consider smaller Termojet pump models.

What media are permissible for pumping?
The pump is intended for clean, non-aggressive, non-explosive liquids with pH 5–9 and temperature 0–120 °C. See Termojet Mega series and Termojet pump groups.