Installation and Service Instructions L Series Pumps（L系列泵的安装和服务指令）.pdf

Service Manual #11 Tuthill Pump Group 12500 South Pulaski Road Alsip, IL 60803 USA o 708.389.2500 f 708.388.0869 Installation and Service Instructions L Series Pumps V1.1 1 of 12 02/06/2009 Service Manual # 11 General Description Tuthill’s LA and LE Series are compact, highly efficient, cast iron positive displacement rotary gear pumps with a mechanical seal. Built in six sizes, they provide nominal capacities from .5 to 14 gallons per minute and pressures up to 500 psi (300 psi in the 5LE). They are self priming and particularly suited to handle liquids of 35 to 1000 SSU viscosity. Higher viscosities can be handled at reduced speeds. The LA Series is supplied with a two bolt flange, the LE Series with a three bolt flange. Optional mounting feet are available for both Series. An internal relief valve is an option with the LE Series. Both Series are bi-rotational (unless outfitted with a relief valve) and designed for direct drive at standard motor speeds, with