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RGXv

PRE NOTES:
There are instances where the hydraulic gradeline falls below a peak point during normal operation and where air inflow would adversely affect the normal operation and surge characteristic of the pipeline.

Vent-O-Mat offers the Series RGXv valve which has specifically been developed to ensure effective air/gas release under all pipeline conditions but will not allow air entry into the pipeline.

VENTING OF A FILLING PIPELINE (SUB CRITICAL SEWAGE/ EFFLUENT APPROACH VELOCITY)

Air/gas flows through the annular space between the cylindrical floats and discharges through the Large Orifice into atmosphere.*

VENTING OF A FILLING PIPELINE (EXCESSIVE SEWAGE/ EFFLUENT APPROACH VELOCITY)

In reaction to increased air/gas flow,”Anti Surge” Float closes the large orifice and air is forced through the “Anti-Surge” orifice resulting in deceleration of the approaching liquid due to the resistance of rising air/gas pressure in the valve.

PIPELINE FULLY CHARGED

Sewage/effluent has entered the valve chamber and buoyed the floats to close both the “Anti-Surge” orifice and the small orifice. The design’s compression/volume relationship prevents the media from ever exceeding the maximum surge level indicated in diagram 3.

The resultant sewage/effluent free area protects against the fouling of the orifice seals by solids or high viscous substances – for this reason NO FLUSHING CONNECTIONS ARE NECESSARY.

PRESSURIZED AIR/GAS RELEASE (PUMP OPERATING)

The volume of disentrained air/gas increases in the valve and displaces the sewage/effluent level to the lower, normal operating level (small orifice control float buoyancy level ) Any additional lowering of the sewage/effluent level, as would occur when more air/gas enters the valve, will result in the control float dropping away from the small orifice through which pressurized air/gas is then being discharged to atmosphere.

The control float will close the small orifice when sufficient air/gas has been released to restore the sewage/effluent level to the normal operating level.

The considerable sewage/effluent free are obviates the possibility of leaks that could otherwise be caused by solids entering the sealing areas – for this reason NO FLUSHING CONNECTIONS ARE NECESSARY

*Note: A relatively low flow discharge rate is required to lift the upper chamber float and ensure air release. The Upper Chamber Float will seat on the Middle Flange under vacuum conditions, effectively preventing air entry.

Air/gas flows through the annular space between the cylindrical floats and discharges through the Large Orifice into atmosphere.*

In reaction to increased air/gas flow,”Anti Surge” Float closes the large orifice and air is forced through the “Anti-Surge” orifice resulting in deceleration of the approaching liquid due to the resistance of rising air/gas pressure in the valve.

Sewage/effluent has entered the valve chamber and buoyed the floats to close both the “Anti-Surge” orifice and the small orifice. The design’s compression/volume relationship prevents the media from ever exceeding the maximum surge level indicated in diagram 3.

The resultant sewage/effluent free area protects against the fouling of the orifice seals by solids or high viscous substances – for this reason NO FLUSHING CONNECTIONS ARE NECESSARY.

The volume of disentrained air/gas increases in the valve and displaces the sewage/effluent level to the lower, normal operating level (small orifice control float buoyancy level ) Any additional lowering of the sewage/effluent level, as would occur when more air/gas enters the valve, will result in the control float dropping away from the small orifice through which pressurized air/gas is then being discharged to atmosphere.

The control float will close the small orifice when sufficient air/gas has been released to restore the sewage/effluent level to the normal operating level.

The considerable sewage/effluent free are obviates the possibility of leaks that could otherwise be caused by solids entering the sealing areas – for this reason NO FLUSHING CONNECTIONS ARE NECESSARY

*Note: A relatively low flow discharge rate is required to lift the upper chamber float and ensure air release. The Upper Chamber Float will seat on the Middle Flange under vacuum conditions, effectively preventing air entry.