Pump group Termojet (straight) PG-37

The pump group without mixer NG-37 is a direct Termojet BOX group with 1″ BSP connection for heating circuits that do not require regulation of heat carrier temperature. The high flow capacity of Kvs 10,2 m³/h at DN 25 mm provides a circuit capacity of up to 40 kW and minimum hydraulic resistance in the system.

The purpose of the group is to organise stable heat carrier circulation from the boiler or distribution manifold to the consumer circuit at full supply temperature. Isolation valves with thermometers on the supply and return lines show the actual temperature regime and allow the circuit to be isolated for maintenance without draining the system. The built-in check valve prevents parasitic circulation between adjacent circuits. Working pressure — up to 10 bar, maximum temperature — 110 °C.

Typical application scenarios: radiator heating, indirect DHW cylinder heating, ventilation circuit with a heating coil, pool heating. NG-37 is mounted on distribution units of the Termojet BOX series — for example, on the BOX3 module for 3 circuits. If the system includes several pumped circuits, we recommend installing a hydraulic separator of the Termojet series before the manifold for hydraulic separation. For low-temperature systems with a heat pump, the direct group is suitable for direct circuits without regulation — see Termojet heat pumps.

Advantages of the Termojet NG-37 pump group:

• ready-to-install unit: isolation valves, thermometers and check valve assembled and tested at the factory;
• working pressure up to 10 bar — headroom for high-pressure systems;
• pump installation length 130 mm — wide choice of circulating pumps;
• Ukrainian manufacture: competitive price, available from stock and official manufacturer's warranty.

Technical specifications: maximum capacity 20 kW at ΔT=10 °C and 40 kW at ΔT=20 °C, Kvs 10,2 m³/h, connection 1″ BSP, DN 25 mm, working pressure up to 10 bar, maximum temperature 110 °C, pump installation length 130 mm. The circulating pump is not included.

The full range of pump groups in the Termojet BOX series and modular units can be found in the Termojet BOX catalogue.

Frequently asked questions

Is the circulating pump included?
No, the pump is purchased separately. Installation length for NG-37 — 130 mm.

What is the difference between a direct group and a group with a mixer?
A direct group delivers heat carrier at full boiler temperature without regulation. For underfloor heating circuits where a reduced temperature must be maintained, choose a model with a mixer or thermostatic valve.