Required Information to Supply The Right Device

Valve Type
Bore Size in NPS or DN
Valve Pressure Rating ( class range from 150# to 4500# )
Specification ( example API 6D , API 600 , API 602 , etc )
Body & Trim Materials ( at least )
Required End Connection ( flanged , threaded , butt weld , lug & others )
Fluid in Pipeline ( oil , gas , water , steam , solids )
Working temperature & pressure
Quantity
Delivery Time
Brand of Manufacturer