supply of compressed air filter ( model ff-80 / 15-1 of m / s fine filter, material carbon steel sand blasted and power coated with 47 / 20x135 mm porous ceremicfilter or modified maxi-filter of m / s siemag with die-east aluminium bowl and 31.5 / 26.5x39.4 / 34.4x67 mm sintered bronze filter ) with 1 / 4 brass needle valve for manual draining and 02 sets of 1 / 2 bsp nipple with union for inlet / outlet, minimum air flow capacity 60 nm3 / hr, operating pressure upto 10 kg. / cm2.test pressure 22 / cm2, operating temperature upto 70c, 05 micron size, pressure drop maximum 2 psi in clean condition, maximum weight 7 kg. [ warranty period: 30 months after the date of delivery ]