| 摘要 |
An air compressor unloader assembly for unloading the compression chamber of an air compressor during a compressor unloading cycle. The unloader assembly includes an unloader piston slidable within an unloader cylinder in the head of the compressor for slidably engaging the intake valve of the compressor and to hold the intake valve open for unloading of the compression chamber of the compressor pump. The unloading cylinder is accessible from an exterior surface of the head via a removable threaded plug in a gas tight arrangement. The plug is dimensioned whereby the unloader piston may be readily accessed for lubrication and/or removed for repair or replacement without having to remove the head from the air compressor cylinder.
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