supply of set of purg-o-matset of purg-o-mat, set of purg-o-mat automatic float air vent valve for roof water tank an d vaccum valve :- ( 1 ) purg-o-mat automatic float air vent valve with shut-off valve h aving thread bsp 3 / 8 to rcfs drg.no.lw 63150, item no.-4, alt.no. -e, qty / kit-01 no. ( 2 ) vac cum valve g-1 / 2 to rcfs drg.no.lw 63150, item no.-3, alt.no. -e. qty / kit-2 nos. sl. no. 10 of no te of drawing has been revised as air vent valve and shut off valve maybe procured from make / brand: jugal or m / s hans h. voss tulpenweg os m / s calefi or m / s watts industries italy or similar [ warra nty period: 12 months after the date of delivery ] sse / carriage furnishing karnataka 372.00 set