| 摘要 |
An air-operated pump for groundwater sampling and other applications includes a removable cartridge coupled to a manifold configured to receive air-inlet and fluid-discharge tubes from an above-ground location. The removable cartridge may be in the form of a bellows or bladder, and may be removably attachable to the pump body through a press fitting. In contrast to prior implementations, the pump body features a manifold with fittings enabling the air-inlet and fluid-discharge tubes to be respectively inserted and sealed into the air-inlet and fluid-discharge ports. In the preferred embodiment, the fittings are such that the associated tubes cannot be removed without modification. For example, the fittings may include a grab plate associated with one or both of the air-inlet and fluid-discharge ports. Each grab plate includes an aperture with finned serrations such that through proper sizing of the plate features and associated tubing, the tube(s) may be inserted and sealed through appropriate compression. Such compression may be provided through the construction of an upper cover, preferably provided with a two-stage bayonet mount, or the fittings may include a compression adapter with one or more sets of O-rings associated with one or both of the air-inlet and fluid-discharge ports.
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