supply of set of items for unloader valveset of items for unloader valve,set of items for unloader valve consisting of 02 items as follows. (i)zinc coated hexagonal he ad 1/2 male dummy with leak hole of center dia 8 mm size, total length: 25 mm, hex length: 10 mm, thre ad length: 12 mm, hex thickness: 26 mm. centre leak hole dia 8 mm. material specification carbon steel as per astm a108.gr.1018. qty/set. = 01 no. (ii) male and female 3/4 adaptor with 0.8 mm leak hole. hex siz e: 32 mm, length: 45 mm, female thread length: 20 mm, male thread length: 12 mm. material specification carbon steel as per astm a108 grade 1018. qty/set. = 01 no. note: one sample set should be got approve d before effecting bulk supply. ]