Irrigation emitter unit

An emitter unit adapted to be integrally bonded to an internal surface of a conduit comprising a housing, a housing inlet adapted to communicate with an interior of the conduit, a housing outlet adapted to communicate with a conduit outlet;

• said housing being constituted by a receiving and a cover member adapted to be coupled together to form a box like structure;
• elongated grooves formed respectively in inner surfaces of both said members;
• a resiliently flexible membrane mounted in said housing and overlying said grooves so as to define therewith component flow restricting flowpaths which communicate via a communicating aperture formed in said membrane, a flowpath inlet of one of said component flowpaths communicating with said housing inlet;
• a flowpath outlet of the other of said component flowpaths communicating with said housing outlet.

An emitter unit adapted to be integrally bonded to an internal surface of a conduit comprising a housing;

• a partially covered elongated inflow channel formed in an outer surface of said housing adapted to be exposed to the interior of the conduit and communicating with a housing inlet adapted to communicate with an interior of the conduit;
• a housing outlet adapted to communicate with a conduit outlet;
• a flowpath outlet communicating with said housing outlet;
• and an array of filter baffles formed along the length of the inflow channel.

An emitter unit adapted to be integrally bonded to an internal surface of a conduit, comprising an elongated housing, a housing inlet adapted to communicate with an interior of said conduit;

• a housing outlet adapted to communicate with a conduit outlet;
• an elongated, flow-restricting flowpath formed in said housing;
• a flowpath inlet communicating with said housing inlet;
• a flowpath outlet communicating with said housing inlet;
• a resiliently flexible membrane mounted in said housing so as to overlie and interengage with at least a portion of said flowpath;
• said housing being of closed box-like shape and being constituted by an elongated receiving member and a correspondingly elongated cover member;
• and projection and recess interengaging means formed along the lengths of elongated rim portions of said members and directed substantially transversely to longitudinal axes of said members such that projection means of one member are adapted to form a close pressure fit within corresponding recess means of the other member.