A combination valve assembly provides dual functionality within a single valve housing. In one example, the valve operates as a combination inversion valve and quick release valve. In another example, the combination valve operates as an inversion valve and a relay valve. The valve is particularly useful...http://www.google.es/patents/US6655750?utm_source=gb-gplus-sharePatente US6655750 - Combination inversion and relay or quick release valve assembly
Combination inversion and relay or quick release valve assembly
