Female-Threaded Three-Way Ball Valve

Service conditions

A ball valve opens or closes the pipeline by rotating a ported ball. Port geometry, seats and stem sealing determine its operating performance. Selection should consider differential pressure, fluid cleanliness and cycling duty together.

Construction and description

Multiport ball valves route fluid through combinations of internal passages and port positions. Define port numbering, required connections and switching sequence before procurement and piping, then check them against a flow-path diagram. Equal port counts do not imply identical routing or isolation arrangements.

Configuration

Select the manual operator or actuator to suit the valve torque or thrust requirements and site operating conditions. Provide access and clearance for manual operation. For frequent cycling or remote operation, assess actuator output, duty cycle and valve-position feedback.

Service conditions

Threaded interfaces require matching thread form, size and sealing method. Select sealing material for the fluid and temperature, and consider assembly torque and support of adjacent piping.

Specify the process-fluid composition and steady-state, startup and shutdown conditions, then evaluate the body, wetted internals and sealing materials together. Solids, deposits and cleaning procedures can affect sealing surfaces and operating mechanisms. Base the maintenance plan on the actual service conditions.