AM200/400 Series High Performance Control Valves
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Product General • Cage guided |
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AM470-490 SERIES CAGE GUIDED MULTI-HOLE CONTROL VALVES Face to Face according to API 609 T2 Data to be supplied when ordering • AM470-490 series valves in accordance with type series booklet-Cage guided multi-hole control valve. |
 AM470-490 Multi-hole Trim Structure |
AM470-490 Cage Guided Single Seat Control Valve
AM470-490 series trim utilizes a number of small, diametrically opposed flow holes through the walls of a special seat retainer provides excellent noise attenuation or cavitation control. Flow capacity and characteristics are determined by the size and spacing of the holes in the seat retainer.
Different sized holes and variable spacing can be used on the same retainer to achieve a desired flow characteristic.
Hardened Trim— For applications requiring trim with superior wear resistance. The complete range is offered in two levels of hardened trims
*Partial Stellite is an overlay on the plug and seat ring surface.
*Full Stellite is an overlay on the complete plug contour, seat ring, plug seating surface and seat ring bore.
Versatile Trim Solutions—Various noise attenuation, anti-cavitation, and tight shut-off solutions are available within the standard AM470-490 product series.
*Globe valve with pneumatic actuator.
*Valve body optionally made of cast steel, forged steel, stainless steel and high-alloy steels or special materials.
*Valve plug with meta or soft sealing.
Options
– Extension section or bellows seal
– Buttweld or socketweld connections
– Heating jacket
– Electric actuator
– Additional handwheel
– Reduced trim
– High temperature trim
Fail-safe positions
Depending on how the compression springs are arranged in the actuator, the control valve has two different fail-safe positions which become effective upon supply air failure:
Actuator stem extends (FC)
The actuator springs close the valve when the supply air failure. Also as air to open.
Actuator stem retracts (FO)
The actuator springs open the valve when the supply air failure. Also as air to close.
Accessories . Positioners, limit switches, solenoid valves, etc.
For more details please contact us.
