A drip emitter for subsurface irrigation includes a valve chamber defining a hollow interior, an entry port and at least one exit port. A flexible diaphragm is mounted in the hollow interior of the valve chamber for movement in response to pressurized water being supplied to the hollow interior through the entry port. The drip emitter further includes a tortuous path water flow channel that limits the flow of water from the hollow interior of the valve chamber to the at least one exit port. A closure member is moved by the flexible diaphragm to open the at least one exit port when pressurized water enters the hollow interior to allow water to be discharged through the at least one exit port. A spring moves the closure member to close the at least one exit port when the supply of pressurized water is shut OFF.

The embodiments described herein are directed to tubing including insertion reference markings on its outer surface that provide an indicator of how far the tubing is inserted into a fitting. In one embodiment, there is a first insertion reference marking and a second insertion reference marking. A distance between the first insertion reference marking and the second insertion reference marking is a predetermined distance. The first insertion reference marking and the second insertion reference marking provide an indicator of how far the tubing is inserted into a fitting.

The embodiments described herein are directed to tubing including insertion reference markings on its outer surface that provide an indicator of how far the tubing is inserted into a fitting. In one embodiment, there is a first insertion reference marking and a second insertion reference marking. A distance between the first insertion reference marking and the second insertion reference marking is a predetermined distance. The first insertion reference marking and the second insertion reference marking provide an indicator of how far the tubing is inserted into a fitting.

A pipe ram joint includes first and second couplers that can comprise rings for mounting to the ends of respective pipes or formed in the ends of these pipes. The first coupler can comprise a female ring with a first tooth adjacent to a distal end thereof and a first groove spaced from the distal end. The second coupler can comprise a male ring with a respect second tooth and second groove. When the pipes are rammed together, the first tooth is positioned in the second groove and the second tooth is positioned in the first groove. The couplers have features that reduce the force required to ram the pipe sections together.

A pipe for connecting to a similar adjacent pipe. The pipe has a male end with a plurality of rigid fingers extending from within and out of at least one exterior circumferential groove disposed on its exterior surface. On the female end is at least one interior circumferential groove sized and positioned to receive the plurality of rigid fingers from a corresponding exterior circumferential groove on the male end of an adjacent pipe. The number of exterior circumferential grooves on the male end typically corresponds to the number of interior circumferential grooves on the female end. When the male end of the pipe inserts into the female end of a similar adjacent pipe, the plurality of rigid fingers is received within a corresponding interior circumferential groove on the female end, thereby preventing the male end of the pipe from being withdrawn from the female end of the similar adjacent pipe.

A pipe connector for connecting with an additional pipe connector includes a first leak-proof pipe, a first sleeve, at least one clamping element and a restricting structure. The first sleeve covers the first leak-proof pipe and allows the first leak-proof pipe to relatively slide therein. The clamping element and the restricting structure are disposed on the first sleeve. The restricting structure is capable of driving the clamping element to clamp or release the additional pipe connector at different positions.

A pipe connector for connecting with an additional pipe connector includes a first leak-proof pipe, a first sleeve, at least one clamping element and a restricting structure. The first sleeve covers the first leak-proof pipe and allows the first leak-proof pipe to relatively slide therein. The clamping element and the restricting structure are disposed on the first sleeve. The restricting structure is capable of driving the clamping element to clamp or release the additional pipe connector at different positions.

The present disclosure provides a pivot brace type pipe fitting, including: a body accommodating an entering pipe, and having a pivot corner having an inverted L-shaped cross section in an annular space surrounding a circumferential surface of the pipe; a plurality of pivot braces which are separated from an inside of the body and include a body adhesion unit in contact with the pivot corner and a pipe adhesion unit in contact with the pipe; and a pivot actuating member having a tightening strap surrounding the pivot brace and an actuator tightening the tightening strap, and bringing the pipe adhesion unit into close contact with the pipe by using the body adhesion unit as a pivot axis and pivoting the pivot brace.

A coupling for coupling one or more hoses to a cleaning machine including at least one connector for the connecting of a hose to be cleaned with a pillar and at least one pillar for the connection of the connector with a cleaning machine, wherein the pillar includes a longitudinal hollow body with at least two open ends including; a longitudinal guidance part, situated towards a first end; and a second end opposite to the first end in longitudinal direction; wherein the guidance part is provided with a thickening for the fixing of the connector to the guidance part, which thickening includes a first slope facing the first end, which slope has an angle with the guidance part between 5 and 45 degrees; and includes a second slope facing the second end, which slope has an angle with the guidance part between 30 and 60 degrees.

Provided are pipe systems and methods for assembling the same. A pipe system includes two pipes, each having an axis, an exterior surface, a retainer groove formed in the exterior surface, and a sheath mounted to a respective pipe such that the sheath at least partially covers the retainer groove prior to assembly. A retainer is also located in the each retainer groove, disposed radially beneath the sheath relative to the axis, prior to assembly. The system further includes a coupling having a bell configured to receive each of the two pipes. Each bell may have a retainer groove formed in an inner surface thereof and the bell configured to receive at least a portion of a respective retainer after assembly of the pipe system. When assembled, the sheaths are configured to uncover the retainer grooves such that the retainers expand into the retainer grooves of the coupling inner surface.