The outlet valve is opened by an operating member (31) which is connected to a diaphragm (30) forming part of a differential valve.

A dry valve is provided for a sprinkler system, including a housing including a valve body having an inlet end and a valve cover having an outlet end.

In order to achieve a flexibly applicable arrangement, the interface valve is adifferential valve (2) having an inlet portion (21) under atmospheric pressure and an outlet portion (22) arranged to be set undervacuum.

The dry pipe valve (18) has a clapper (52) which is normally retained in the closed position by a latch member (58).

An electromagnetic differential safety valve.

The safety valve cone (8) protects the differential pressure sensor (12) against to high differential pressure.

A differential pressure valve (44) is provided in the control device.

Upon application of a pressure differential to one side of the valve, the valve opens; upon application of ap ressure differentiel to the opposide side of the valve, the valve closes thereby preventing leakage.

The outlet valve is opened by an operating member (31) which is connected to a diaphragm (30) forming part of a differential valve.

The differential pressure sensing and logic control units include a logic shuttle valve (23), a differential pressure sensing and locking valve (24) and a guide control valve (25).

In a particular configuration, the valve closes automatically when a specific differential pressure is applied.

Further, a differential control valve is provided along the guiding flowpath.

The differential pressure valve (26) is designed to connect a valve inlet (34) to a valve outlet (38) when the piston (48) is subjected to a predefined pressure.

A dry valve is provided for a sprinkler system, including a housing including a valve body having an inlet end and a valve cover having an outlet end.

The feller valve (20) is controlled by means of a differential pressure applied to a throttle valve (73) arranged downstream of the pump (80).