A maintenance technician isolating a 4-inch cooling header has to spin a gate valve handwheel somewhere between 15 and ...

At a water treatment plant, a technician slips a cheater bar over the lever of a 10-inch butterfly valve and pulls. The...

A DN150 cooling-water line is a common place to meet a butterfly valve that has started to weep at the flange, eight m...

An operator closes a 6-inch valve twice a shift to change a strainer on a cooling water header. Twenty metres downstrea...

If a control valve must fail safe during a plant-wide power failure, a pneumatic positioner is often the only instrumen...

A bench test at 7 bar makes almost any actuator look decisive. Move the same unit to a plant where the header sags to 4...

A quarter-inch NPT air line that keeps weeping after a week in service is rarely a tape problem. More often the fitting...

A butterfly valve on a filter backwash line shows CLOSED on the control room screen, but media still slips past the sea...

Two documents arrive with the same quarter-turn valve package: a pneumatic schematic diagram and a pneumatic actuator d...