Valve FAQ

Explore the world of valves with common industry terms and definitions as well as information about different types of valves and their uses.

What is a ball valve?

A ball valve is an extremely durable stop valve that is designed primarily for on/off function.

What are three-way ball valves?

3-way ball valves converge and divert fluid flow in a piping system.

What is a check valve?

Check valves are mechanical valves that permit gases or liquids to flow in only one direction, preventing flow from reversing down the line.

What are spring check valves?

Spring check valves have a disc held in place by a spring and ensure that gases or liquids flow in only one direction.

What are swing check valves?

Swing check valves have a disc which swings into position to prevent back-flow while allowing full forward flow to be achieved through the valve.

What are lift check valves?

Lift check valves work automatically with line pressure to prevent back-flow from occurring.

What are globe valves?

Globe valves have a conical plug which reciprocates into and out of the valve port, allowing for shut-off and throttling.

What are gate valves?

Gate valves are most suited to services requiring full flow or no flow and infrequent operation.

What is a Y strainer?

Y Strainers are designed to protect piping system components from damage caused by dirt or debris in flowing liquids or gases.

What are foot valves?

A foot valve is a check valve which is located at the inlet end of the suction line of a pump.

What are actuators?

Actuators are used to operate valves automatically and/or remotely.

What are spring-return actuators?

Spring-return actuators are spring-opposed pneumatic cylinders used to open or close a valve automatically.

What are double-acting actuators?

Pneumatic double-acting actuators use gas (typically air or nitrogen) to pressurise a double-acting cylinder in order to operate a valve.

Valve specialist - best range, quality & brand
Zetco stands apart from the competition as the valve distribution specialist, manufacturing its entire brass and bronze valves exclusively in Italy. We are dedicated to the provision of superior ball valves, gate valves, globe valves, and check valves suitable for a broad spectrum of applications encompassing plumbing, gas, HVAC, civil works, OEM, mining and industrial sectors. For manual isolation valves in our markets, Zetco has the best range, the best quality and the best brand.