supply of special maintenance kit double check valve for e-70 brake system as per ftrtipl part no.7900 02209 consist of 04 items:- 1.double check valve w/piston ring ftrtipl part no.ft0050398-329 - 1 set cons ists of : 1.1 valve assly ftrtipl part no.002122500 - 1 no./set- consists of: (a) valve as per ftrtipl part no .002421000 -01 no. (b) valve insert as per ftrtipl part no.002701000 - 02 nos. 1.2 piston ring (for 3/4 dcv) as per ftrtipl part no.002421500 - 01 no/set 2. joint as per ftrtipl part no.002701500 - 02 nos [ warrant y period: 30 months after the date of delivery ] ] dls/vskp, ecor andhra pradesh 91.00 set