| http://www.w3.org/ns/prov#value | - No. 157,117 5 Claims. (Cl. 137-596) The present invention relates to pneumatic components and particularly to a housing embodying an aspirator and a valve so arranged and interrelated with passages Within the housing that when air from a positive pressure air supply line is introduced into one of two housing entrances the valve is closed and the air is fed to apparatus connected to a further housi
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