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Oswal check valves are heavy duty, bolted cover,
renewable seat ring, and body mounted disc swing
type. Valves are straight through flow which works
automatically. They are opened by the force of
velocity pressure and closed by the force of gravity
and back pressure. The valves are single direction
flow and restrains flow in opposite direction.
Distortion, wear and noisy operation of the valve
can be avoided by selecting the size of the valve
on the basis of flow conditions.
Swing Check
valves are best suited for moderate velocity operations.
Swing check valves are normally designed for horizontal
installations. It can be installed in vertical
direction with flow in upward under the disc.
There is no tendency for seat to gall because
the disc meets flat surface without rubbing upon
contact.
The most advanced
design features provides the ultimate in dependable,
economic flow control. They are available in wide
range of sizes and weights. Flow directions are
marked as cast on the body for ease of installation.
Swing
Check valves are adequate for all service media.
Valves can also be supplied with counter weights
and dash pot arrangement depending upon the condition
and request.
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| Size
Range |
Class |
| 2" - 24" |
Class 150 |
| 2" - 24" |
Class 300 |
| 2" - 24" |
Class 600 |
| 2" - 12" |
Class 900 |
| 2" - 12" |
Class 1500 |
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Standards |
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| Design
Standard |
BS 1868 |
| Testing
Standard |
BS EN 12266 – 1 |
| Face
To Face |
ASME B 16.10 |
| End
Connection |
Flanged End - ASME B 16.5 |
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Butt Weld End –
ASME B 16.25 |
| Pressure
– Temperature Chart |
ASME B 16.34 |
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| Material |
| STRUCTURE |
End Connection |
Flanged End Raised
Face, Butt Weld End, RTJ,. ETC |
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| MATERIAL |
Shell |
WCB, WC1, WC6, WC9, LCB, LCC,
LC3, C5, C12, CF8, CF8M, CF3,
CF3M, CF8C, CN7M, CD4MCu, Hastelloy,
Inconel, Duplex Stainless Steel |
| Trim |
13% Cr
Steel, 304 , 304L, 316, 316L,
321, 347, F51, Monel |
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