Rehau 381103-001 Pro-balance Manifold R20 X 1 in Bsp X Fnpt Stainless Steel 3-outlet 0 to 2 Gpm

Product Description

The REHAU 381103-001 PRO-BALANCE Manifold is a stainless steel, 3-outlet hydronic distribution manifold designed for radiant heating, radiant cooling, and snow and ice melting systems. It features BSP x FNPT connections and an R20 x 1 inch port configuration, making it compatible with standard REHAU PEX tubing circuits and common pipe fittings found in residential and commercial radiant floor systems. The manifold handles a flow rate range of 0 to 2 gpm per circuit, allowing precise balancing across all three loops. HVAC technicians and hydronic installers rely on this type of manifold to distribute hot or chilled water evenly through multiple radiant circuits, ensuring consistent temperatures across every zone. The built-in flow meters on each outlet let technicians visually read flow rates at a glance and make quick adjustments using the included balancing key. This eliminates the need for separate balancing valves or guesswork during system commissioning. Rated for temperatures from 14 to 180 degrees Fahrenheit, this manifold handles both low-temperature radiant heating loops and chilled water cooling applications. The dual pressure ratings of 44 psi and 150 psi reflect operating and test pressure thresholds, giving installers confidence during pressure testing and long-term system operation. The stainless steel construction resists corrosion and provides the clean, professional appearance that clients expect to see in mechanical rooms and utility spaces where the manifold is often the only visible component of the radiant system. Overall dimensions are 14.37 inches in length, 12.83 inches in height, and 3.9 inches in depth, making it compact enough for tight mechanical spaces. Flow meter accuracy is plus or minus 10 percent, which is sufficient for balanced circuit commissioning in most residential and light commercial radiant installations. This manifold is a reliable, field-proven component for hydronic system contractors who need straightforward circuit balancing without complex valve assemblies.

• 3-outlet stainless steel manifold with integrated flow meters for visual circuit balancing on radiant heating and cooling systems
• BSP x FNPT connection with R20 x 1 inch port sizing for compatibility with standard REHAU PEX and common hydronic fittings
• Rated from 14 to 180 degrees Fahrenheit and up to 150 psi, suitable for both heating and chilled water radiant applications

Product Highlights

The REHAU 381103-001 PRO-BALANCE Manifold simplifies hydronic circuit balancing with built-in flow meters and an included adjustment key, delivering a clean and professional installation for radiant heating, cooling, and snowmelt systems.

Product Information

Standard Information

• Brand: REHAU
• Manufacturer Part Number: 381103-001

Technical Specifications

• Connection Type: BSP x FNPT
• Size: R20 x 1 in
• Number of Outlets: 3
• Material: Stainless Steel
• Flow Rate: 0 to 2 gpm
• Pressure Rating: 44 psi, 150 psi
• Temperature Rating: 14 to 180 degrees Fahrenheit
• Flow Meter Accuracy: +/-10 percent
• Dimensions: 14.37 inches L x 12.83 inches H x 3.9 inches D