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Sand & Gravel Rubber Flanged Hoses
Application
The hose is heavy duty robust in construction and used for suction and discharge of sand and water at a high pressures. The rubber inner lining is abrasion resistance of sand & gravel with woven fabric / nylon reinforcement and shall incorporate one or two galvanised wire helix embedded in layers of rubber compound.
Length
- For hoses having 100 mm nominal bore the maximum length shall be 15 metres.
- Above 100 mm nominal bore to 200 mm nominal bore the maximum length shall be 7.5 metres.
- Above 200 mm to 300 mm nominal bore hoses maximum length shall be 6.0 metres.
- The tolerance on the hose length shall be ±2%.
Working PressureSand and Gravel Suction and Discharge hose suitable for maximum working pressure of 7, 10 and 15 Kg/Cm2. The proof pressur test being 1.5 times of working pressure.
Construction
- Lining: Soft inner rubber lining resistance to abrasion of sand and small sharp gravels.
- Reinforcement: Shall consist of rubberised fabric / synthetic / nylon and will be strengthened with one/two G. I. wire helix embedded in layers of rubber compound. Embedded wire helix be closely spiralled over the nipples in case of builtin fittings.
- Cover: Shall consist of a suitable rubber compound resistance to abrasion and ageing. Smooth or corrugated fabric wrapped finish.
End ConnectionPlain / Enlarged / Builtin type coupling / Builtin rubber flanges.
Technical Specification
Nominal Bore Size
|
Bend Radius |
NB Size
(mm)
|
Tolerance Bore Size |
Max W.P.
0.7 Mpa (mtr)
|
Max W.P.
1.0 Mpa (mtr)
|
100
|
±3
|
1.00
|
1.00
|
150
|
±3 |
1.40
|
1.60
|
200
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±3 |
1.85
|
2.15
|
250
|
±3 |
2.30
|
2.70
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300
|
±3 |
2.75
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3.30
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