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

A. Sluice valves
12.1 General.
Chapter - 12
Appurtenances
All valves shall be double-flanged valves of Indian manufacture and in the size
range 50mm to 1000mm conforming to IS: 14846 – 2000 or any other national
standard equivalent or higher than the Indian Standards mentioned. The materials
used in construction, the design and all other relevant features shall be such that the
valves are entirely suitable for use of force mains. Valves shall be of suitable
pressure rating which shall not be less than twice the normal operating pressure.
The valve shall be fitted with motorise actuator and position indicator for
compatibility with proposed automation control and visualization system.
12.2 Design.
The design of the valves will be such that erosion, cavitation, vibration and head
loss (in the fully open position) shall be a minimum.
12.3 Sluice valves.
Sluice valves shall generally conform to IS: 14846 - 2000. Valves should close
with clockwise rotation of the hand wheel. The direction of closing should be
marked on the hand wheel. Valves shall be flanged (flat faced) and drilling shall
conform to IS: 1537.
12.4 Materials of Construction.
Body - C.I. to IS: 210 Gr. FG 200
Wedge - C.I. to IS: 210 Gr. FG 200
Seat Rings - Bronze / SS 304
Channel lining - Gun Metal
Shoe - Gun Metal
Spindle - SS A1S1 431
GTS : General Technical specification. Page 93