Contact us: +44 (0) 161 430 4000

Dereve Relief Valves
Wind Up Door Bells

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Brass Relief Valves

Stainless Steel Relief Valves

Pressure Regulators

Wind Up Door Bells

Water Savers

Fusible Plugs


Dereve manufacture a range of wind up and mechanical door bells , that require no batteries, wiring or electricity. They simply fit to the inside of your front door and give a life-time of maintenance free, reliable service.
Each is presented on an attractive blister pack card, together with all fixing screws and instructions. Clockwork action needing only occasional winding of dome

Dereve's "IMPERIAL" wind up door bells are available in four finishes:

5858 White dome with chrome plated bezel.
5858B Brassed dome with brass bezel.
5858BR Brassed dome with round brass bezel.
5858CR Chrome plated dome with chrome plated round bezel.

All have Black plastic base with 80mm diameter

For a full Imperial door bell data sheet please click here

Dereve also manufacture the"INNOVATION" door chime.

The Innovation is a mechanical chime and is simplicity itself to fit to your door, requiring no batteries, wires or electricity.
It has a pleasant two-tone chime and can be supplied in black and white plastics.
The chime blends with any interior decoration, and the push plate has concealed fixing screws for a neat apprerance.

The chime comes attractively pre-packed, and its dimensions are 75mm x 150mm x 45mm deep

For a full Innovation door chime data sheet please click here


iso 9001 : 2000Dereve are registered to the ISO 9001:2008 Quality standard.

All of our relief valves are manufactured under and approved to the European Pressure Directive: PED No. 97\23\EC.


For more information on our SloFlo please contact:

Tel: +44 (0) 161 430 4000
Fax: +44 (0) 161 494 1461


Brass Relief Valves|Stainless Steel Relief Valves|Pressure Regulators|Wind Up Door Bells|Water Savers