Cold water meter JS, type GSD8-RFM, DN20 (3/4"), Q3=4.0 m³/h, R100/50, Tmax: 50°C, L=130mm, connection GZ1", dry-type, anti-magnetic, for remote reading 8MA00F24SSDIV0

Universal Single-Jet Dry-Type and Anti-Magnetic Water Meter

Water supply meter with nominal diameter DN 20 (3/4 ") ensuring stable measurement at flow rates up to 4 m³/h (Q₃). Thanks to the dry-type construction, the impeller has no contact with water when stationary – this solution minimizes mechanical wear and extends the meter's service life even with infrequent use.

The eight-disk register, rotating through a full 360 °, is driven by a reinforced four-pole magnetic coupling. This design eliminates slippage and breakage of drive components while maintaining the impeller in hydromagnetic balance, thereby improving measurement accuracy. A sapphire jewel in the register support increases sensitivity at low flow rates and extends the operational lifespan.

Benefits for the Installer and End User

• Precise measurement – accuracy class R 100/50 (MID) guarantees reliable readings in both vertical (V) and horizontal (H) installations.
• Resistance to magnetic fields – an integrated anti-magnetic ring protects the meter from external interference, which is particularly important in buildings with numerous electrical devices.
• Remote reading – the option to connect a Wireless M‑BUS or wired M‑BUS radio module enables automatic data transmission to the water consumption management system.
• Quick installation – the GZ 1 " connection, combined with a compact height of 75 mm and length of 130 mm, allows installation in standard connections without additional modifications.
• Operational safety – nominal working pressure PN 16 bar and maximum operating temperature 50 °C meet the requirements for cold water installations in residential and public buildings.

Installation, Compliance, and Additional Features

The device complies with Directive 2004/22/WE and holds MID certification according to the relevant standard, making it approved for measuring water intended for human consumption. Thanks to its dry-type and anti-magnetic construction, the meter is suitable for both new installations and the modernization of existing water supply networks.

A variant equipped with a radio module is also available, enabling integration with water consumption monitoring systems and convenient collection of measurement pulses without the need for manual reading.