Hydraulic separator Termojet flanged in thermal insulation with base HS-33F

Hydraulic separator HS-33F is a flanged low-loss header (hydraulic separator, thermo-hydraulic distributor) of the Termojet Mega series, supplied in thermal insulation and with a base for floor mounting. A body of 380 mm diameter and a maximum flow of Gmax 76.2 m³/h cover a boiler room of up to 900 kW at ΔT=10 °C and up to 1800 kW at ΔT=20 °C. All four branches are flanged DN 125 (GOST 12820-80, PN16), so the unit connects straight to the pipework without adapters.

How it works: the hydraulic separator creates a zone of low pressure loss between the primary circuit (boiler or cascade) and the secondary consumer circuits. When the flow rates differ, the surplus or shortfall of water passes through the separator body — boiler pumps and consumer pumps stop competing for flow, and the boiler settles into its design regime. At the same time the unit cleans the system: dissolved gases and microbubbles rise to the top and leave through the air vent, while sludge settles in the lower part of the body and is drained through the drain valve. The insulation removes heat losses in the boiler room and prevents condensation on the body.

Applications: industrial and commercial boiler rooms, boiler cascades, heat substations, systems with many pump circuits. The flanged version is chosen where the pipework is already built on flanges and a demountable joint is needed for servicing without cutting pipes. If the site uses Grinnell grooved couplings, the same body is available as HS-33 of the Termojet Mega series. Neighbouring sizes — HS-32F and HS-34F.

Advantages of the HS-33F hydraulic separator:

• DN 125 flanges directly on the body — no flange adapter kit needed, the joint is demountable from the start;
• hydraulic separation, air venting and sludge settling in a single body;
• insulation and base included — the unit stands on the boiler room floor without supports and without extra lagging;
• steel body of our own production in Ukraine, manufacturer’s warranty.

Technical data: maximum flow Gmax 76.2 m³/h, output 900 kW at ΔT=10 °C and 1800 kW at ΔT=20 °C, flanged DN 125 connection (flange outside diameter 245 mm), body diameter 380 mm, centre-to-centre distance of the branches 750 mm, height with base 1560 mm, width across the flanges 815 mm, depth 440 mm.

What it is installed with. To connect the separator to a distribution manifold, use the KCH125/150 kit from the Termojet Mega series — the distribution manifolds themselves are there too, for the required number of circuits. Each circuit downstream of the manifold is easiest to assemble from ready-made Termojet pump groups. If the system water is dirty or the circuit carries a lot of air, add air and dirt separators alongside: the low-loss header removes the bulk of gas and sludge, and the separator polishes the water. For heat pump installations see Termojet heat pumps. Smaller threaded sizes are in the Termojet hydraulic separators catalogue.

Frequently asked questions

How does HS-33F differ from HS-33 of the Mega series?
The body, insulation and hydraulics are identical: the same 76.2 m³/h flow, the same 380 mm diameter and 750 mm centre distance. The only difference is the branches: HS-33F has DN 125 flanges, HS-33 has Grinnell grooved ends.

What size of boiler room does HS-33F cover?
Up to 900 kW at the standard ΔT=10 °C and up to 1800 kW at ΔT=20 °C — the level of a cascade boiler room or a commercial heat substation. The limit is set by the maximum flow of 76.2 m³/h.