Vanne de mélange 4 voies PN6, DN 100, à brides, KVS=160 ZR100FA

Application and Operation

The 4-way mixing valve ZR100FA is used for temperature regulation of water in heating and air conditioning systems where precise mixing of hot medium with return flow is required. It operates by moving a stem nozzle, which automatically adjusts the flow proportions between the heat source (e.g., boiler) and the system return — thereby achieving a constant, set mixture temperature. Ideal for systems requiring smooth regulation, such as underfloor heating or radiators with low-temperature circuits.

Medium: water or water-glycol mixture up to 50% — without risk of condensation at temperatures from 2 to 130 °C. Working pressure up to 6 bar (PN6), corresponding to standard requirements for central heating systems.

Construction and Installation

The body is made of GG 20 cast iron (GJL-200), ensuring durability and corrosion resistance in humid conditions. All four flanged connections have identical DN100 diameter and 135 mm length — facilitating installation in parallel or symmetrical piping arrangements. Connections comply with DIN EN 1092-2 standard, and the surface is protected with primer paint.

The electric actuator requires a torque of 30 Nm for full stem travel — indicating compatibility with most standard control actuators. Operation occurs over a 90° angle, and the flow characteristic is equal-percentage — guaranteeing stable and linear regulator response.

Net weight: 32.4 kg. Dimensions: height 278 mm. Connections are identical — no need to distinguish between inlets and outlets during installation.

Advantages and Operating Conditions

• 5-year warranty from the date of manufacture — confirmation of quality workmanship and materials.
• Maximum differential pressure at 20°C: only 0.08 bar — indicating the valve is designed for systems with low pressure differences between sides, typical in systems with low-power circulation pumps.
• Leakage rate: maximum 1% of Kvs=160 — meaning very low losses when closed, thus effective stream isolation.
• Allowable glycol content up to 50% — enables use in antifreeze systems without valve replacement.
• No through-stem — the "mixing" construction prevents direct flow between inlets, allowing only controlled mixing.
• Suitable for high-flow systems (Kvs=160) — ideal for larger buildings or commercial facilities.