PACKAGE : I Bid Document VOLUME : II - Public Health Engineering

iii) Wash waste penstock, 400mm C.I. circular with rising spindle
operated by pneumatic cylinder, complete with air connection
piping to control console.
6 nos.
iv) Wash waste wall pipe C.I. 400mm flanged and plain end. 6 nos.
v) Filter outlet wall pipe C.I. 300mm flanged and plain end. 12 nos.
vi) Filter outlet C.I. Tee 300x300x250 12 nos.
vii) Filter outlet isolating C.I. sluice valve 250mm with rising spindle
operated by pneumatic cylinder complete with air connection
piping to control console. 12 nos.
viii) Wash inlet C.I. sluice valve 300mm with rising spindle operated by
pneumatic cylinder complete with air connection piping to control
console.
ix) Outlet control valve 350mm outlet and twin 250mm inlet with
control fittings.
12 nos.
6 nos.
x) 250mm C.I. piping from filter isolating valve to control valve. 12 nos.
xi) 100mm C.I. mushroom valve for filter rinse with pneumatic
cylinder and air connection piping to control console 6 nos.
xiii) Filter head loss indicator, probe type with indicator dial mounted
on control console satellite indicator dial mounted on annunciator
panel in chemical house and maximum head loss audiovisual
alarm.
6 nos.
xiv) Control chamber inspection cover of sheet steel with glass
inspection window. 6 sets.
xv)
Underdrain comprising:
R.C.C. Tees 240 nos.
A.C. strainer 480 nos.
xvi) Filter media comprising graded gravel and filter grade sand 1 lot
xvii) C.I. wash main 300mm from wash water tank to wash inlet valve
of 6 filters.
xviii) Wash water tank level indicator with audiovisual alarm for high
and low levels.
1 range
1 set.
xix) 80mm C.I. air distribution pipes in filters with 80mm G.I.
connecting pieces. 12 lines
DTS : Detailed Tender Specification. Page 236