Specifications

Enquiry Specification for Wagon Tippler with Side Arm Charger and Associated works
NRO/CON/WT/533
EPI – New Delhi Volume-2B, Rev.0 Page 17 of 63
(RA 1984), Class-2, Dished ends IS:4049 Part-I, 1979 (RA 1991). Material of
construction shall be as follows:
Shell and dished ends : IS: 2002 Gr2 or equivalent
Supports pad, leg, skirt, base : IS: 2062-1992
Plate, nozzles : A 105 (below 300 mm NB)
A 106 Gr B (above 300mm NB)
Flanges & matching flanges : A 105
The air receiver shall be supplied with following accessories:
- Circular skirt welded to the bottom portion of the shell.
- Circular base plate welded to the skirt with holes for foundation bolts.
- Foundation bolts/ studs, nuts, washers.
- Nozzles for inlet and outlet with weld neck flanges.
- Manhole nozzle at an accessible height with weld neck flange and cover
having devit arrangement.
- Safety valve of sufficient blowing capacity mounted at a suitable height
connected through a flanged joint to nozzle welded on the receiver shell.
Safety valve shall be provided with test lever and gagging arrangement.
- Vent valve at the highest point of the dished end for releasing the air
during hydro test.
- Water drain nozzle at the lowest point with drain isolation valve, trap
station and by pass valve.
- Companion flanges with bolts, nuts and gaskets for inlet and outlet
nozzles and other valves.
- Stubs for pressure indicator for local measurement of pressure.
(9) Pressure Gauge
Manufacturing Standard : IS 3624
Range : 0 – 6 Kg/ cm2 or 0-10 Kg/ cm2
Range (at pump suction) : (-)2 to (+) 2 Kg/ cm2
Dial Diameter : 100 mm
Accuracy : + 1% of FSD
Degree of protection : IP 65
Sensing element : Bourdon tube
Bourdon tube material : AISI SS316
Connection : Screwed
Connection size : ½ “ BSP (M)
Mounting : Direct with bottom entry
Case : Die cast Al stove enamelled black finish
Bezel (screwed) : Die cast Al stove enamelled black finish
Dial window : Shatter proof glass
Pointer : Al anodised black
Dial : Al white with black letters
Movement assembly : AISI 304SS
Shank : AISI 3166SS
Adjustable pulsation damper: Yes
Pressure gauges shall be provided with isolation valves (Ball valves)