Abstract: A pneumatic valve adapter that couples with a valve stem of a bicycle tire is provided. The valve adapter comprises a cap, a seal, a biasing member, and a sealing member. The cap includes a pin passage and a circumferential concavity on an outer diameter. The receiver is coupled to the cap and is couplable with the valve stem, the receiver having a first opening that is fluidly coupled to a central passage. The seal has a circular shape and cross-section, the seal is disposed between the cap and the end of the receiver, the seal having a second hole that fluidly couples the first opening and the pin passage. The biasing member is disposed in the central passage. The sealing member is disposed within the central passage and biased against the seal by the biasing member, the sealing member being movable between a first position and a second position.

Abstract: A pump-head configured to couple with a bicycle inner tube valve stem or tubeless valve stem is provided. The pump-head includes a housing, inflation pin, a plurality of members and a biasing member. The housing has an attachment member that couples with an air source, the attachment member having an air inlet passage and a collar with a plurality of passages disposed about a periphery of the collar, the plurality of passages extending from an outer diameter of the collar to an inner bore. The inflation pin is coupled to the housing and the air inlet passage, the inflation pin having an end disposed within the inner bore. The members are associated with, and at least partially disposed in, one of the plurality of passages. A biasing member is disposed about the periphery of the plurality of members to biasing each of the members towards the inflation pin.