Abstract: The present invention relates to a metal mold for manufacturing a straight wax body for a valve and to the straight metal body thus obtained, said metal mold succeeding in eliminating the traditional concave shape of the ball-type valve body, inside which, and during fluid flow distribution, the flow from the fluid inlet cavity to the fluid distribution cavity causes a flow loss in the direction of the fluid flow outlet via the fluid outlet cavity, thus creating a steep drop in pressure, meaning that by eliminating the concave part of the ball-type valve body and making the fluid inlet, distribution and outlet cavities straight and much wider, a straight valve body is obtained, thus preventing the steep drop in pressure and flow loss.

Abstract: The invention in question relates to a needle-type stepped cylindrical stopper for automatic control of water consumption in pipelines, of two types, each type having two sections for automatically controlling water consumption, irrespective of the water pressure in the line or when the taps are opened, for use in automatic water-saving devices and pressure-sensitive flow controllers, such as to enable, with a single automatic water-saving device, incorporating the needle-type stepped stopper of this invention, automatic control of minimum water consumption, from 4.0 liters per minute as a minimum at a maximum static pressure of 0.2 kilograms per square centimeter up to a maximum water consumption of 10.0 liters per minute at a maximum static pressure of 6.0 kilograms per square centimeter.

Abstract: The invention in question relates to a needle-type stepped cylindrical stopper for automatic control of water consumption in pipelines, of two types, each type having two sections for automatically controlling water consumption, irrespective of the water pressure in the line or when the taps are opened, for use in automatic water-saving devices and pressure-sensitive flow controllers, such as to enable, with a single automatic water-saving device, incorporating the needle-type stepped stopper of this invention, automatic control of minimum water consumption, from 4.0 liters per minute as a minimum at a maximum static pressure of 0.2 kilograms per square centimeter up to a maximum water consumption of 10.0 liters per minute at a maximum static pressure of 6.0 kilograms per square centimeter.