Its advantage are :
1:High vacuum . its vacuum degree is improve more then other congeneric products
2: High haft power utilization , large output with small power input .
3 : Lone service life , little wearing part ,easy to maintenance .
4: Compact structure ,easy to use and preserve .
5: Relief valve built in ,when pump or pipe break down ,or close discharge valve by mistake in cause to high pressure ,then relief valve will open automatically, disburden part or all high pressure liquid to low pressure chamber ,protect pump and pipe .
6:contact with driven motor or diesel engine by elastic coupling ,and install on public chassis
7: this series pump use packing seal ,with good elasticity and high temperature resistance ,stable chemical properties and and moist change flexible graphite as packing .this produce can pump and distribute kerosene ,diesel .liquefied petroleum gas ,and some lubricants whose moving viscosity under 200 degree ,it can pump gasoline,benzene with bronze impeller ,it is mainly used to pump .loading and sweeping oil stock ,railway station ,and gas station,it can be used in bowser or oil truck ,and with cast iron impeller ,it can be used as moving fire pump ,too.
