Design EU and EW Valves
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Design EUT-2 and EWT-2 valves with a hanging cage are available for demanding applications in oil and natural gas to 232°C (450°F).
The hanging cage, with the seat ring threaded into the cage, gives these valves easy-maintenance trim—no trim parts are threaded into the valve body.
The seal between the plug and cage and the seal between the seat ring and valve body are spring-loaded PTFE seals. These valves are available with optional PTFE seating.
Design EUD and EWD valves have a bolted-in seat ring.
These valves have metal-to-metal seating and use a graphite piston ring seal between the valve plug and cage.
They are used primarily for high temperature (over 232°C[450°F]) service.
These valves share the following characteristics:
multiple trim material choices, trim part interchangeability, and different cage styles to provide particular flow characteristics to handle specific applications.
To help reduce aerodynamic noise in gas service, Whisper Trim III cages (figure 4) are available.
To eliminate liquid cavitation damage, Cavitrol III cages are available.