Geberit Type 383 Filling Valve for Surface-Mounted Cisterns, Adjustable Fill Height

At 23 x 10.7 x 6 cm, the Geberit Type 383 is a filling valve for surface-mounted cisterns. Its adjustable filling height lets you set the water level to suit the cistern.

The valve is suitable for ceramic cisterns and drinking water systems. A 3/8-inch water connection gives you a clear point to match when choosing a replacement.

It is the successor to Geberit Type 380 filling valve 240.700.00.1. Quiet filling, rated at 7 dB(A) at 3 bar according to DIN 4109, helps keep cistern operation unobtrusive.

Where it shines

This valve is designed for AP (surface-mounted) cisterns, including ceramic models. The adjustable fill height is useful when setting the water level for a particular cistern, while the brass threaded nipple provides a durable threaded connection.

For a replacement, the key practical checks are the cistern application and the 3/8-inch water connection. That makes this a more targeted choice than selecting a general valve by appearance alone. It is also suitable for greywater, including rainwater, with a pH value of 6.0–9.5 when used with the filter insert.

Highlights

The Type 383 combines an adjustable filling level with quiet operation, so it supports a considered fit for everyday cistern use without drawing attention during refilling. Its stated noise level is 7 dB(A) at 3 bar, in accordance with DIN 4109.

The valve measures 23 x 10.7 x 6 cm and weighs 270 g. Its white and blue finish identifies the supplied valve, while the brass threaded nipple is a practical detail for the water connection. For rainwater or other greywater use, the pH range and filter insert condition are important to follow.

Who it’s for

This Geberit filling valve suits someone fitting or replacing a valve in a compatible surface-mounted cistern, particularly where adjustable water level and quiet filling are useful. It’s a good fit if you are matching a 3/8-inch connection and want the Type 383 successor to the Type 380. The stated water applications also make it relevant to suitable greywater systems, provided the water is within the specified pH range and the filter insert is used.

Questions before you buy

Which cisterns is the Type 383 designed for? It is intended for AP, or surface-mounted, cisterns and is suitable for ceramic cisterns. The water connection is 3/8 inch, so match that to the installation when choosing the valve.

Can the filling height be adjusted? Yes. The valve allows individual adjustment of the filling height, so the water level can be set to suit the cistern.

Can it be used with rainwater? Yes. It is suitable for greywater, including rainwater, with a pH value of 6.0–9.5 when used with the filter insert.

Is it worth it?

For a compatible surface-mounted cistern, the Geberit Type 383 brings together an adjustable fill level, a 3/8-inch connection and quiet filling in one replacement valve. Its stated ceramic-cistern and greywater applications help make the choice more specific, while the brass threaded nipple and Type 380 successor status offer useful details when identifying the right Geberit valve for the job.