supply of 2 nos air operated diaphragm pumps at mangalore terminal , supply of 2 nos air-operated diaphragm pumps with trolley for portable operation , as per tender specifications , air operated diaphrgm pump , 3in type of pump : air operated diaphragm pump head requirement : 40m ( negative suction upto at least 5 m shall be permissible ) ; flow: 400 to 600 l/min liquid to be handled : hydrocarbon/ oily sludge with specific gravity 0 . 6 to 1 maximum operating temperature : 50 deg csuction size: 3 inch; discharge size : 3 inch availability of air pressure : 2 air-compressors of capacity 96 cu . m/hr approx . & 4 . 0-6 . 5 bar air discharge pressure . suspended solid size : upto 6 mm material of construction: wetted parts: aluminium/ stainless steel/ polypropylenenon wetted parts: aluminium/ stainless steel/ polypropylenediaphragm: nitrile rubber ( buna-n ) / ptfe ( teflon ) ball valve: nitrile rubber ( buna-n ) / ptfe ( teflon ) valve seat: nitrile rubber ( buna-n ) / ptfe ( teflon ) o ring: nitrile rubber ( buna-n ) / ptfe ( teflon ) air shut off valve; filter/regulator and needle valve shall be provided on air supply line by vendor along with flange/thread connected air hose . the maximum air pressure that air filter and regulator shall be capable of withstanding shall be at least 08 bar . notes: documnetation for all items: 1 . along with bid : 1 . 1 vendor should furnish g . a drawings & cross sectional drawings of pump showing various parts identified by numbers & material of construction . 1 . 2 product catalogue of pump 1 . 3 performance curves of the pump to be furnished2 . along with material : 2 . 1 . vendor should furnish operation & maintenance manual along with all test certificate . 2 . 2 . vendor has to give guarantee certificate for their product . 2 . 3 . vendor has to submit material test certificate , performance test certifcate , performance curves alongwith delivery of the pump 2 . 4 . vendor should furnish g . a drawings & cross sectional drawings of pump showing various parts identified by numbers & material of construction .