I would like to draw your attention on the EN 1779 standard (dated August 1999, as far as I know) about Non-destructive testing - Leak testing - Criteria for method and technique selection.

I have a question. Someone knows why suppliers offer dual plate check valves with solid stellite in the plates' material instead of stellited overlay.

I have heard that for every 900 litres of liquid volume in a line, a thermal relief valve needs to be installed.Is there any standard which will indicate when to put the thermal relief valve on the li

I have an 8" check valve that I need to replace that is in the vertical plane 11" from the discharge of a 1435 gpm pump.

Im a starting engineer and I was set a task to design a flotation system for an unmanned device that drops to seabed, and has to pop up back to the surface.

I am working on an adding air scour to an existing rapid sand filter system at a water treatment plant. Because of the pipe configuration, I have very limited horizontal room where the pipe turns into

At the local WTP they are having a surge problem from one of the high service pumps. The pump is a 1600 GPM pump with a swing check and soft start drive.

We have two 2" ball valves that tie into a cryogenic line (minus 100 C). The ball valves have cavity vents. In between the ball valves is a check valve.