The needle valve is inserted into the ball's pump hole via the valve's long and narrow needle. When the needle is attached to a pump, a one-way valve allows the flow of air into and not out of the bal

When considering the uses of needle valves, the manual operation is most commonly thought of. Manual operation is when the handwheel is turned to adjust the rate of flow.

Depending on the purpose needle valves vary in design. Some technical equipment requires smooth flow control, reliable fixation of intermediate positions. In this case, the needle valve shut-off and r

A valve is a accessory that regulates, directs or controls the breeze of a aqueous (gases, liquids, fluidized solids, or slurries) by opening, closing, or partially obstructing assorted passageways. V

Check valves are necessary if there is a risk of condensate backflow.

When your lawn mower is not starting even though it has a clean air filter, a good spark plug and plenty of gas, you can assume that a dirty carburetor is causing your engine not to start. The carbure

A needle valve is a small metal pin in a lawnmower carburetor's float assembly. The valve sets the level for the float when providing fuel to the engine. Over time, the needle valve can wear down or b

One type of body design for a needle valve is the bar stock body. Bar stock bodies are common, and, in globe types, a ball swiveling in the stem provides the necessary rotation for seating without dam