01 / FUNCTIONStart with the duty
Ball valves are commonly considered for quick quarter-turn isolation, while gate valves are commonly used where a full-bore isolation path and linear operation are required. Final selection depends on the project specification and service conditions.
02 / OPERATIONQuarter-turn vs linear travel
Ball valves typically move through a quarter turn. Gate valves use linear stem travel. That difference affects operating speed, actuator selection, space and maintenance planning.
03 / FLOWReview pressure-loss requirements
Full-bore designs can reduce restriction when fully open, but the exact valve construction, bore and piping arrangement should be reviewed against the process requirement.
04 / SERVICEPressure, temperature and medium matter
Body, trim, seat, seal and pressure-class requirements should come from the documented service conditions rather than from valve type alone.
05 / AUTOMATIONInclude actuation early
If automation is required, include fail position, operating torque context, control signal, accessories and hazardous-area requirements with the RFQ.
06 / RFQSpecify before comparing price
A useful comparison requires size, rating, end connection, material, service conditions, standards, quantity and documentation requirements to be aligned.