supply of 29160571 - special maintenance kit double check valve or e-70 brake system29160571 - special maintenance kit double check valve or e-70 brake system,special maintenance kit double check valve or e-70 brake system as per ftrtipl part no .- 79000209 consist of following 04 items:- (1) valve as per ftrtipl part no.- 002421000, qty.- 01 no./s et, (2) valve insert as per ftrtipl part no.- 002701000, qty.- 02 nos./set, (3) joints as per ftrtipl part no.- 002701500, qty.- 02 nos./set, (4) piston ring for 3/4 dcv as per ftrtipl part no.- 002421500, qt y.- 01 no./set [ warranty period: 30 months after the date of delivery ] ] electric loco shed stores/src, west bengal 20.00 set