Stainless steel manifolds for underfloor heating systems - Art. 8042 - 8043 - 8044 - 8045 - 8046 - 8047

Aug 23, 2026

Stainless steel distribution manifolds for underfloor heating and cooling systems, designed for radiant panels, radiators and fan coils. Built in AISI 304, they enable thinner surfaces than brass while improving lightness and reducing internal tension risk. Models can include flowmeters for balancing and fast regulation, or lockshields, plus pre-assembled brackets, drain valves and manual or automatic air vents. Components feature PTM Pintossi soft sealing for quick installation without extra sealing materials, and each manifold is individually tested with nickel-plated parts.

LanguageEnglish

CategoryTechnology

FormatPDF

Pages8

Reading Time20 min

AccessFree to download

Product Overview

Applications and Materials

Configuration Options (Flowmeters / Lockshields)

Installation and Sealing System (PTM)

Supply Manifold

Lockshield and Flowmeter Functions

Flowmeter Regulation Method

Flow Rate Data and Components

Return Manifold

Thermostatic Screw and Actuator Control

Screw Presetting and Safety Features

Flow Rate Data and Regulation Steps

Technical Specifications

Fluids and Operating Limits

Materials and Dimensions

SCHEDA N° DATA AGG. 0162139001 07/2023 Stainless steel manifolds for underfloor heating systems Art. 8042 – 8043 – 8044 – 8045 – 8046 – 8047 100% MADE IN ITALY Function Pintossi+C stainless steel distribution manifolds can be used both for underfloor heating and cooling systems. This kind of manifolds are mainly used in underfloor heating systems with radiant panels, radiators or fan coils. The specific characteristics of the stainless steel AISI 304 and in particular is extreme strenght , allows to use thinner surface compared to brass, granting a greater lightness. Besides stainless steel bar, unlike brass bar, does not have internal tensions, which may lead to breaks or cracks and then to water leakages, in particular if the brass bar is not heat treated. The specific design of Pintossi+C manifolds grant, compared to standard brass bar or plastic manifolds, higher flow rates, getting up to 5 m³/h (1” manifolds) . Manifolds can be equipped with flowmeters for the regulation and control of the circuits flow or with lockshields. Each manifold is supplied pre-assembled with brackets for iron boxes or for wall installation. The end parts are equipped with drain valve and with manual or automatic air vents. Furthermore, it’s available a straight or angle ball valves kit with thermometer to control the supply and return water temperature. Both valves and end parts are equipped with PTM system (Pintossi soft sealing), which allow a quick and safe installation, without the use of additional sealing materials, like hemp or PTFE ribbon. Each manifold is singularly tested. All the components are nickel plated. Supply and return manifold SUPPLY MANIFOLD The supply manifold can be equipped with: 1. lockshield for the circuit balancing; 2. Flowmeters for the circuit balancing and for a quick and correct regulation without the use of diagrams, tables or measurements devices. Flowmeters have a regulation scale 0-2,5 l/min and can be easily regulated removing the red plastic protection, using the appropriate flaps and rotating the regulation handle in the following way: - in senso orario per diminuire la portata; - in senso antiorario per aumentare la portata. -clockwise to reduce the flowrate; -counterclockwise to increase the flowrate. Using the regulation handle it’s possible to completely close the single circuit. The correct and optimal balancing of the system is crucial to ensure an optimal distribution of the thermal energy produced and consequently money savings. FLOW RATE DIAGRAM (flowmeter totally open) KV=1,1 m³/h FLOWMETERS COMPONENTS | 1 | FLOWMETER BODY | | --- | --- | | 2 | GRADUATION SCALE METER | | 3 | REGULATION RING | | 4 | STEM | | 5 | NIPPLE | | 6 | MANIFOLD | | 7 | FLOW BREAKER ITEM | | 8 | MEASUREMENT CILINDER | | 9 | BOTTOM FITTING | RETURN MANIFOLD The return manifold is equipped with thermostatic screw with 30x1,5 connections where is possible to install actuators to manage automatically circuits opening and closing through a room thermostat. The protection cap of the screw, besides having a thread protection purpose, can be used as shut-off valve. Screw valves can be pre-set using the square (5mm) located on the top. The potential removal of the internal component of the thermostatic screw does not lead to water spills, thanks to the internal protection system with double o-ring. For this reason, the component can be substitute even when the system is working. The screw regulation can be done using the square located on the drain valve plug FLOW RATE DIAGRAM Perdita d i carico ( kPa) Flow rate (kg/h) THERMOSTATIC SCREW REGULATION | N° turns | KV (m³/h) | | --- | --- | | 0,25 | 0,12 | | 0,50 | 0,15 | | 0,75 | 0,22 | | 1,00 | 0,35 | | 1,50 | 0,76 | | 2,00 | 1,14 | | 3,00 | 1,94 | | 3,50 | 2,74 | 1. Remove the protection plastic cap on the thermostatic screw; 2. Close completely the thermostatic screw, supplied in a completely open posi

FAQs

What are these stainless steel manifolds used for?

They can be used for both underfloor heating and cooling systems, including radiant panels, radiators, and fan coils.

Why is AISI 304 stainless steel important in this product?

AISI 304 provides extreme strength, allowing thinner surfaces than brass for greater lightness, and it avoids internal tensions that can lead to breaks or water leakages.

How does the PTM soft sealing system help during installation?

PTM Pintossi soft sealing enables quick and safe installation without needing additional sealing materials such as hemp or PTFE ribbon.

Aug 23, 2026

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