Pump group Termojet without mixer 1 1/4" FT in thermal insulation without pump PG-51L

Pump group NG-51.150-L without mixer — a powerful direct Termojet group of size 1¼″ female thread in left-hand configuration: the supply line is positioned on the left, allowing mirror-image arrangement of groups on the manifold and optimising the boiler room pipework layout. Designed for unregulated circuits up to 85 kW.

The group organises the circulation of the heating medium from the heat generator or manifold to the consumer circuit at full supply temperature — without return mixing. The high flow capacity Kvs 16.3 m³/h means minimum hydraulic resistance even at high flow rates. Valves with 0–120 °C thermometers on supply and return provide control of the temperature differential in the circuit, the built-in check valve prevents parasitic circulation, and the thermal insulation casing reduces heat losses of the unit.

Applications — circuits that do not require temperature control: large-area radiator heating, DHW boiler heating, ventilation circuit with air heater, pool heating, buffer tank loading. In high-capacity heat pump systems, this group serves the buffer or ventilation circuit — see Termojet heat pumps. Hydraulic independence of circuits in a boiler room of this scale is provided by the hydraulic separator GS-27 1½″. Mounting the group on the Mega manifold is possible via adapter PNG50/32; KP21.250.150.

Advantages of NG-51.150-L from Termojet:

• size 1¼″ — up to 85 kW per circuit without excessive flow velocity;
• left-hand configuration — flexible arrangement of groups on the manifold;
• factory equipment: valves with thermometers, check valve, thermal insulation casing, union nuts;
• own manufacturing in Ukraine — price, availability, official warranty.

Technical specifications: maximum capacity 45 kW at ΔT=10 °C and 85 kW at ΔT=20 °C, Kvs 16.3 m³/h, connection to manifold and circuit — 1¼″, working pressure up to 6 bar, dimensions 471×296×160 mm, volume 0.9 l. Pump mounting length — 180 mm; pump not included — the Termojet APE 25-60 pump (180 mm) is suitable.

Right-hand configuration and other sizes — in the Termojet pump group catalogue.

Frequently asked questions

What does «L» mean in the name?
Supply line on the left. Hydraulic characteristics are identical to the right-hand configuration — choose based on convenience of the boiler room pipework layout.

Which circuits is this group suitable for?
For unregulated circuits up to 85 kW at ΔT=20 °C: radiators, DHW boiler, ventilation, pool, buffer tank.