This check valve has continually evolved through many years experience with large steam turbines and compressors. On loss of load, steam turbines risk rapid acceleration due to the stored energy in the feed heating system. Steam flow reversal can occur in less than 0.2 seconds. Compressors have a similar problem when emergency shut down may lead to rapid flow reversal. These occasions cause very high impact forces on check valve closure thus necessitating the special design features of ADAMS FCV valves.
The FCV can be supplied with a variety of control sytems and accessories to suit customer requirements.
Where power assisted closure is specified, this will usually be by a direct acting pneumatic hydraulic or spring-return actuator operating via a pad, avoiding the friction of a shaft seal.
Body and disc are of forged or fabricated steel. The seat and disc tips are hard-faced.
The ADAMS exclusive inclined cone seal system guarantees freedom from jamming, positive shut-off, and long life with low maintenance requirements.
ANSI 300/600/900/1500
- triple offset design with inclined conical sealing system
- optimum flow opening characteristics
- inherent gravity closure
- low inertia
- all parts designed to tolerate high impact
- fast response
- butt weld ends (body length: ISO F5)
- excellent sealing
characteristics at high and low operating pressure
- short closing travel
- absorption of high dynamic forces
- freedom from jamming at seat
- low friction
- no internal screw connections
- field replaceable disc
- minimum maintenance
- reliable operational function for frequent cycle operation
- inspection/mounting port
- internal steam heating
- accessories for remote control
- flanged design
For further technical information or purchasing details, please contact your local Adams representative or Adams Valves, Inc.