tender for kit for duplex check valve comprising of 04 items.(i) piston seal as per ftrtil partno.002704500, qty-01 no. (ii) seal as per ftrtil part no.002704000a, qty-01 no/set (iii) o ring as perftrtil part no.002703500a,qty-02 nos,(iv) valve stem assembly as per ftrtil part no.002121500,qty-01no/set.
