Abstract: The present invention relates to a programmer control device.This device comprises a rotary cam block 5 intended to be driven step by step by an advancing device comprising three advancing pawls 21, 22, 23 mounted on an oscillating support. The first pawl 21 can directly actuate step by step the first toothed ring 31 integral with the first part 1 of the cam block 5. The second pawl 22 interacts under the action of an elastic means with the smooth periphery 25 of a cylindrical extension 26 forming part of the second part 2 of the cam block 5. It likewise interacts, via orifices 30 passing completely through this extension 26, with a second toothed ring 32 integral with the first part 1. The third pawl 23 interacts under the action of an elastic means with a third toothed ring 33 integral with the inner periphery of a rate reduction collar 3 mounted rotatably inside the second part 2 of the cam block 5.

Abstract: In an oscillating sprinkling device, control of the change of direction of oscillation of a sprinkler is achieved by deviating a jet of the sprinkling liquid impinging a driving turbine to change the direction of rotation of the turbine.

Abstract: A valve for water sprinklers and the like, with an inlet and first and second outlets, has a hinged clapper biased to close the second outlet but held closing the first outlet by a dosing device after delivery of a given volume of liquid through the first outlet. The dosing device includes a chamber communicating with the inlet via a flow regulator. Filling of the chamber with liquid moves a piston extended by a rod cooperating with the clapper.

Abstract: A lawn sprinkling installation has a series of dosing valves arranged in cascade to each successively deliver a set quantity of water to a sprinkler. Each dosing valve has a hinged clapper biased to normally open a first outlet leading to the sprinkler and close a second outlet connected to the inlet of the successive dosing valve. Volumetric dosing means hold each clapper to close the first outlet and open the second after delivery of a regulated quantity of water and hold the clapper as long as the water pressure is maintained. When the last dosing valve shuts off supply to the last sprinkler, a gate valve supplying the first dosing valve is automatically or manually closed to allow water in the pipes joining the dosing valves to drain through a discharge orifice, thus enabling automatic resetting of the clappers.

Abstract: A valve includes a membrane carrying a clack, an inlet and an outlet of the valve facing one face of the membrane whereby the valve can be seated to close the outlet. A main or pilot operated chamber delimited by the other face of the membrane permanently communicates with the inlet via a first passage, and may communicate with the outlet via a second passage of greater cross-sectional area than the first. When the main valve is seated to close the valve, temporary opening of the second passage for example by an electromagnet reduces the pressure in the chamber and thus actuates opening of the valve and the valve. A third passage, of greater cross-sectional area than the first, and also communicating the chamber with the outlet, is opened in response to opening of the valve and is held open against the action of a biasing spring as long as liquid flows through the valve. If the throughflow drops, the valve closes the valve.