| 摘要 |
A fluid dispensing gun is provided which is manually operated by a lever arm and cam mechanism. As an operator draws the lever arm to an open flow position, a pivot plate displaces a cam bar to which is attached a valve stem. This causes movement of the valve stem away from a valve opening and permits fluid flow. A U-shaped stem housing and an open tubular spring housing provide convenient access for axial adjustment of the valve stem and compression adjustment of the valve spring.
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