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| VENTING OF A FILLING PIPELINE (SUB CRITICAL WATER APPROACH VELOCITY) |
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Air enters Orifice (1), travels through the annular space between the cylindrical floats (4), (5), (6) and discharges through the Large Orifice (3) into atmosphere.*
*Note: A relatively low flow discharge rate is required to lift float and ensure air release. Float will seat on the Middle Flange (9) under vacuum conditions, effectively preventing air entry. |
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| VENTING OF A FILLING PIPELINE (EXCESSIVE WATER APPROACH VELOCITY) |
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In reaction to increased air flow, Float (6) closes Large Orifice and air is forced through the "Anti-Shock" Orifice resulting in deceleration of the approaching water due to the resistance of rising air pressure in the valve. |
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| PRESSURIZED AIR RELEASE FROM A FULL PIPELINE |
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Subsequent to the filling of a pipeline, liquid enters the valve Barrel Chamber (2) and the Floats (4), (5) and (6) are buoyed so that the "Anti-Shock" Orifice (8) is closed by the Float (5) and the valve will then become pressurized. A minimal working pressure of <0.5 bar (7.3psi) acting on a relati |
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| Brochure Download |
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Description:
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click here to download. |
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