Hdpe compression elbows
The Hdpe compression elbows are irrigation equipment used in major irrigation equipment. They are commonly use in connecting Hdpe pipes of different sizes to give it a Y shape, L shape lines.
It has a pressure nominal (PN) of 16 to pressure nominal of 25. The pressure nominal (PN) is the working pressures of the materials and it also identifies the strength of the material. The larger the pressure nominal number, the stronger the material.
Currently, most Hdpe compression elbow is made of plastics (polymers). This type of material reduces the effects of corrosion. Corrosion may compromise the water quality which is an essential factor in irrigation. Compression elbows are mostly determined by their nominal diameter (inside diameter).
Nominal sizes may range from 20 millimeters to 91 millimeters as the commonly used plastic Hdpe compression elbows in irrigation fields. These sizes may come inform of male, complete or female elbows.
Types of Hdpe compression elbows
For instance male elbows are elbows that have external threads on their necks to enable them to be compatible with other materials with internal threads. Most male compression elbows are used together with saddle clamps (irrigation tool for overhead irrigation), internal threaded ball valves and any other G.I components with external threads.
Unlike male elbows, female elbows have internal threads on their necks to make them compatible with other irrigation tools. They go in hand with externally threaded water filters, tank connectors, .e.t.c.
In complete compression elbows, they have no threads on their necks but they have cap, O rings, clinching rings, blocking bush and the body to make them compatible with other tools. Most complete compression elbows are used to connect Hdpe or Lpde pipes together to a given direction.
Compression elbows are tilted at angles of different degrees (o) to meet the required designated directions. Moreover, the available tilted degrees are 90o , 130o and 450
Function of the plastic Hdpe compression elbow.
The main function of the plastic reduced Hdpe compression elbow is to connect Hdpe pipes of different sizes to give it a Y shape, L shape lines. However, by doing this, the pressure is built-up within a constricted/bent surface area. This, therefore, generates dynamic pressure (Pushing effect) inside the pipe which helps by pushing water with a higher velocity.
The compression elbow is characterized by toughness, ductility and they provide a sound
joint able to withstand pipeline expansion and contraction and other stresses though this may not be the only method to reduce stress, it’s among the most effective.
The plastic reduced couplings are usually accompanied with the threads, O rings, grippers to give it strength for it to be compatible with other irrigation components.
In conclusion, the best way to select the best plastic elbows is first to know your water driving force. This force also is known as pressure may be either a water pump or natural gravity depending on the general slope of the land.
The water driving force will ensure that the right elbow plastic PN is selected and incorporated with other equipment that is used for irrigation hence delivering high efficiency.
The table below shows the parts, material and the color of the Hdpe elbow
|A||Cap||High quality polypropylene||Blue/green/black|
|B||Clinching Ring||Acetyl resin||White|
|C||Blocking Bush||High quality polypropylene||Black|
|D||“O” Ring Gasket||rubber||Black|
|E||Body||High quality polypropylene|