manifold Termojet with flow meters for 8 outlets, stainless steel

The Termojet 8-outlet flow meter manifold is the central heat carrier distribution unit in an underfloor heating system. Stainless steel AISI 304 with 1.6 mm thickness, built-in flow meters 0–5 l/min on each circuit, standard connections G1" / G3/4" and actuator sockets M30×1.5 make it ready for precise balancing and zone control without modifications.

Technical Specifications

Operating Principle and Balancing

The manifold consists of two parallel manifold pipes — supply and return. The heat carrier from the main line enters through the G1" port and is distributed evenly across eight underfloor heating circuits. Without balancing, a longer loop has greater hydraulic resistance and receives less heat carrier than a shorter one — some rooms heat less effectively. The built-in flow meter (rotameter) with a transparent cap and colored float shows the actual flow rate in each circuit in l/min. The flow meter's adjustment valve allows reducing flow in short loops to the level of long ones — balancing minimizes the temperature difference between rooms. The M30×1.5 sockets on each outlet accept standard thermal actuators: with zone control, the thermostat opens/closes a specific circuit without affecting the rest.

Applications

• House or apartment with 7–8 rooms/zones. The 8-outlet manifold covers a typical private house of 120–200 m² — each loop serves one room or heating zone. Combine with a mixing unit for the manifold to reduce supply temperature.
• Systems with loops of varying length. A typical scenario: bathroom (20–25 m loop) and living room (80–100 m) on the same manifold. Flow meters allow precise balancing by actual flow, not blindly by number of turns.
• Zone control with thermostats. Each outlet has an M30×1.5 socket — install a thermal actuator, connect a room thermostat, and get independent per-room control.
• Connection to manifold cabinet. The 480 mm length matches the size of manifold cabinet No. 02 (internal or external, 6–8 outlets).

Advantages of the Termojet AISI 304 Manifold

• Stainless steel AISI 304 — unlike brass or chrome-plated manifolds, does not corrode from heat carrier with glycol additives and does not form deposits on internal walls.
• Flow meters 0–5 l/min — precise balancing by actual flow, as with leading European manufacturers. The transparent cap allows reading the value without removing the fitting.
• M30×1.5 sockets — a standard compatible with mass-market thermal actuators from various manufacturers. Unlike non-standard threads, replacement or retrofit does not require sourcing specific parts.
• G 3/4" Eurocone — universal connection for PE-RT or PE-Xa 16×2 pipe without reducers.
• Ready-assembled kit — valves with thermometers, air vents, drain valves included.

Underfloor Heating and Heat Pump

A heat pump operates most efficiently at a heat carrier temperature of 30–45°C — in this range COP reaches 4–5. Underfloor heating is precisely the system that consumes heat carrier at this temperature. The Termojet 8-outlet flow meter manifold is the heart of the low-temperature circuit: it evenly distributes flow from the heat pump across rooms, and the flow meters prevent any loop from "stealing" flow from others. More about comprehensive solutions — at the Termojet heat pumps website.

Frequently Asked Questions

What is the difference between a flow meter manifold and a valve manifold?
A valve manifold (with shut-off valves) only allows opening or closing an individual circuit. The 8-outlet valve manifold is suitable for simple homogeneous systems where all loops are approximately the same. A flow meter manifold adds precise flow metering — you see l/min in each loop and adjust the balance according to actual hydraulics. For a house with rooms of different sizes and loops of different lengths — flow meters are mandatory.

Which manifold cabinet is suitable for the 8-outlet manifold?
The 84040TJ-W-08 manifold at 480 mm is designed for manifold cabinet No. 02 (6–8 outlets, 565 mm wide). If a pump-mixing unit is installed nearby — account for its dimensions when choosing the cabinet depth.