ASME Pressure Vessel Connections
The Nozzle Experts
Long Weld Necks
The Long Weld Neck (LWN) connection is the lightest and most economical of FCI standard connections offered for use where a minimum of reinforcing area is required. It is the most commonly used nozzle in the ASME pressure vessel industry. LWN is also the lightest wall connection of the FCI nozzle family. The nozzle that follows the LWN with a slightly heavier wall barrel is known as the Heavy Barrel (HB). The next three nozzles known as Intermediate 1 (I-1), Intermediate 2 (I-2) and Intermediate 3 (I-3) are progressively heavier wall types as their names suggest. The last member of the nozzle family is the Equal Barrel (E), known for its barrel OD being the same as the flange OD. Based on the industrial standard, it represents the heaviest wall nozzle. However, larger barrel than flange diameter nozzles can be manufactured and referred to as the Super Barrel (SB).
FCI’s product offering with a wide spectrum of ASME pressure vessel connections makes it simple on the customer, as we are capable of producing a nozzle for every application in the pressure vessel industry.