Pressure relief vent for a waste holding tank

Details Pressure relief vent for a waste holding tank Pressure relief vent for a waste holding tank

B - Operations, Transporting

60

R

B60R 15/04 (2006.01) E03D 5/012 (2006.01) F15B 21/04 (2006.01)

Patent

CA 2117521

A vent for a removable toilet holding tank includes a valve member that is in communication with both the holding tank interior and the ambient atmosphere and is moved off its valve seat when the pressure within the holding tank exceeds the ambient pressure by an amount sufficient to overcome the force of gravity acting to hold the valve member against its valve seat. The vent further includes a second valve member which is operable to close the vent when the holding tank is removed from the toilet bowl thereby precluding spillage of the tank contents during handling of the tank when separated from the toilet bowl.

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