Abstract: A drip irrigation lateral connector to a feeder pipe, a feeder pipe adapted for mounting those connectors and an irrigation system comprises a feeder pipe with those connectors and drip irrigation laterals that are mounted to those connectors by standard drip irrigation lateral connectors, wherein each of those connectors comprising a bushing and a sleeve element and wherein the sleeve is formed with a multi-armed circumferential array that are adapted for snap mounting of said sleeve into said bushing or disassembly from it by linearly pushing the sleeve towards the bushing or linearly retrieving the sleeve from the bushing while disconnecting the sleeve's multi-armed circumferential array from the bushing.

Abstract: A fluid pressure regulator with a no-drain valve where the no drain valve also serves as a pressure reactive member to operate the pressure regulator valve. At low pressure settings, the no-drain valve is biased closed, and the regulator is biased open. As pressure progressively rises, the no-drain valve opens, then abuts a piston component of the regulator valve, and as pressure continues to rise, moves together with the regulator piston to move the regulator valve toward a closed position, thus regulating pressure.

Abstract: A fluid pressure regulator with a no-drain valve, characterized in that—when the fluid pressure decreases at the regulator's flow inlet to pre-set level, a no-drain spring means of the regulator, overcomes the force exerted by the fluid pressure upon the regulator's no-drain valve component and a protruding shoulder formed around its circumference, pushing a no-drain piston assembly of the regulator and stresses its no-drain valve component towards an exit flow control opening formed in the regulator, to the fully closed state of the regulator's no-drain valve component; and upon an ongoing increase of the fluid pressure at the flow inlet to a pre-set level that is still lower than the designed regulated pressure of the regulator or at most equal to the designed regulated pressure of the regulator, the force that the fluid pressure exerts on the protruding shoulder surface area formed around the circumference of the regulator's no-drain valve component, overcomes a no-drain spring means and propels the regula