supply of set of flame retardant and quick release coupling hose assembly , set of flame retardant and quick release coupling hose assembly for 6500 kva 3-phase l oco transformer (01 set consists of 07 items in 14 nos.) as per sketch no. wcr/tkd/el/4-sk-036 :- (1) fla me retardant hose assly size 1/2 length-3150 mm (fitted with coupling). abb id no. 3ehp431215r000 1.qty. =02 nos. (2) flame retardant hose assly size 1/2 length -6500mm (fitted coupling). abb id no. 3 ehp431217r0001, qty. =01 no. (3) quick release coupling type firg-1/2 (male & female). for hose of abb id no. 431215r0001 qty. =06 sets. (4) adaptor (male) for hose of abb id no. 431215r0001 qty. = 01 no. (5) adaptor (female) for hose of abb id no. 431215r0001, qty = 01 no. (6) straight coupling (c- 20-5) for hose of abb id no.431215r0001, qty = 01 no. (7) elbow union, abb id no.3ehp230119 p0007 , qty = 02 nos. [ warranty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 lacs ] ]