ليل ونهار بفكر فيك

ليل ونهار بفكر فيك وبفكر فى انى اوهب عمرى كلة ليك واعيش بقيت حياتى بين ايديك واقولك انى حبيتك من يوم ما جت عينى فى عينيك و فى نفس اليوم و التوقيت اتمنيت انى اكون حبيب ليك واقولك بحبك واعيدها ليك وانى مستحيل اقدر فى يوم من الايام اعيش بعديك

احسنتـ , شعر جميل ~

عاشت الايادي يابطل ~ :biggrin:

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It is also possible for a pfa lined plug valve to have more than two ports. In a 3-way plug valve, flow from one port could be directed to either the second or third port. A 3-way plug valve could also be designed to shift flow between ports 1 and 2, 2 and 3, or 1 and 3, and possibly even connect all three ports together. The flow-directing possibilities in multi-port plug valves are similar to the possibilities in corresponding multi-port ball valves or corresponding multi-port valves with a rotor. An additional possibility in plug valves is the have one port on one side of the plug valve and two ports on the other side, with two diagonal and parallel fluid pathways inside the plug. In this case the plug can be rotated 180° to connect the port on the one side to either of the two ports on the other side.

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