Reasonable choice of pipe diameter, pipe diameter, at the same flow rate. Flow velocity is small, resistance loss is small, but the price is high, the pipe diameter is small, will lead to a sharp increase in resistance loss, the selected gear pump pressure increases, with belt The increase of power, the increase of the cost and the operation cost should therefore be considered technically and economically. The discharge pipe and its fittings should take into account the maximum pressure they can withstand. The pipe layout should be arranged as straight pipe as possible, Of the attachment and minimize the length of the pipe, you must bend when bending the elbow bend radius should be 3 to 5 times the diameter of the pipe, the angle as much as possible more than 90. Gear pump discharge side must be equipped with a valve (relief valve) and Check valve The valve is used to adjust the operating conditions of the pump. The check valve prevents the gear pump from reversing when the fluid is flowing backwards. (When the liquid flows backwards, it will generate huge reverse pressure to damage the pump). Such as the operating temperature of the liquid Suction side pressure (absolute) Exhaust side tank pressure Altitude Ambient temperature Operation is intermittent or continuous The gear pump position is fixed or removable.
