Pump group Termojet with thermostatic valve 25-55 °C 1" FT in EPP BLACK thermal insulation without pump PG-46EPPL

Pump group with thermostatic valve NG-46 L — pre-assembled Termojet unit for circuits requiring heat-carrier temperature regulation, in proprietary EPP BLACK thermal insulation. The thermostatic valve maintains the supply temperature in the range of 25–55 °C, and the letter "L" indicates the left-hand supply line position — for mirror-image arrangement in the boiler room.

The operating principle is based on return blending: as soon as the supply temperature exceeds the value set on the thermostatic valve, the three-way thermostatic valve adds cooled heat carrier from the return line — the circuit steadily receives the set temperature regardless of the boiler's operating mode. This protects the underfloor heating from overheating without expensive electronic automation: the group operates completely autonomously.

Typical application scenarios: underfloor heating, low-temperature radiator heating, circuits with supply temperature limiting in systems with solid-fuel and gas boilers. Precise maintenance of a low temperature makes the group suitable for systems with a heat pump as well — if you are selecting equipment for low-temperature heating, see Termojet heat pumps. If the layout requires the supply on the right, choose the mirror-image pump group NG-46 with thermostatic valve 25–55 °C (base version).

Advantages of NG-46 L from Termojet:

• EPP BLACK thermal insulation with recesses for fittings — minimum heat losses and a neat boiler room appearance;
• fully assembled and tested at the factory — installation in minutes;
• left-hand supply connection — flexibility for arranging adjacent groups on the manifold;
• Ukrainian manufacture: competitive price, in-stock availability, manufacturer's warranty.

Technical specifications: maximum circuit power 15 kW at ΔT=10 °C and 30 kW at ΔT=20 °C, Kvs 3,5 m³/h, connection 1″ female thread, working pressure up to 6 bar, thermostatic valve range 25–55 °C. Circulation pump installation length — 180 mm; pump not included — the energy-saving Termojet APE 25-60 pump (180 mm) is the optimal choice.

Straight groups and other versions — in the Termojet pump groups catalogue.

Frequently Asked Questions

What does "L" in the group name mean?
Left-hand supply line position. The mirror-image version with the supply on the right is the base NG-46: this allows the adjacent circuits to be neatly routed on a single manifold.

Is the circulation pump included?
No, the pump is purchased separately. Installation length — 180 mm; the energy-saving Termojet APE 25-60 (180 mm) is the optimal choice.