supply of modified air flow filter with regulator ( prv ) with 1 / 2modified air flow filter with regulator ( prv ) with 1 / 2, modified air flow filter with regulator ( prv ) with 1 / 2 bsp with both side adopter ( 1 / 2x 1 / 2 ) & ( 1 / 2 x 1 ) connector, with rounded plunger and thermo plastic piston to give 0.1 to 0.2 kg / cm2 pressure drop along wit h pressure gauge marking at 2.5 to 3.5 kg / cm2. model rfrsmr-4 size-1 / 2 bsp. make - siemag [ warranty period: 30 months after the date of delivery ] electric loco shed gkp, ner uttar pradesh 15.00 numbers