supply of maintenance kit for duplex check valve as per ftil part no.790039105. one set consists of 04 items. (full description is as per annexure enclosed in the documents).maintenance kit for duplex check valve as per ftil part no.790039105. one set consists of 04 items. (full description is as per annexure enclosed in the documents).,maintenance kit for duplex check valve as per ftil part no.790039105. one s et consists of 04 items. (full description is as per annexure enclosed in the documents). [ warran ty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitt ed: max 8 lacs ] ] carr. repair stores/tpty, andhra pradesh 114.00 set scr-- 1) valve seat ( sub assly) to part no. no.039101000 qty-02nos./set 2) compression spring to part no.039802000 qty-02nos./set 3) seal to part no.039703000 qty-02nos./set 4) joint to part no.039704000 qty-01no./set