Seat valve
Seat-style pressure-relief valve
Seating arrangements for poppet or non return valves
Selectively indexed multiple orifice valve
Self cleaning flow shutoff valve
Self powered servo actuated backpressure regulating valve
Self re-arming valve
Self sealing gasket assembly
Self-acting fluid non-return valve
Self-actuated flow control valve
Self-actuated pilot-controlled safety valve
Self-contained closed-loop electrically operated valve
Self-contained emergency shutdown valve
Self-contained hydraulic ESD system
Self-contained safety system
Self-contained vent valve unit and system utilizing the same
Self-operated protection device for pipeline
Self-regulated pressure control valve
Self-regulating valve
Self-restricting shutoff valve