If a valve stem is broken, can it be welded back together in field?

I have to purchase a 1" Globe Valve, 450 Bars Hub ended, designed to 450 bar for (-35

A105 is not an acceptable substitute if the client has specifically called for A105N. The normalizing heat treatment will ensure the forging has superior properties to the "as forged" material.

I attached part of the P&ID from my project. Could anyone kindly tell why is the valves and blind flanges set there together? Is any reason behind this?

Hi does anyone know a source for Cv values for standard cast steel globe valves? My project is using 250NPS to 400NPS valves.

For the valve application, some terms confusing me and can anybody please give me some instructions?What does seat pressure rating means for valve product?How the valve manufacturing determine the sea

Can I use swing type check valve in steam service (600#, 900# and 1500#)?, if so, what would be the criteria selection of this type of valves in steam service?. Is it safe to use and install swing typ

Can anyone tell me about single block and bleed ball valve?