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High Pressure, Temperature Service Type Globe Vavle
LOW NOISE, ANTI-CAVITATION TRIM TYPE
This service was designed for reliable and stable Process fluid control under extra severs flow condition (high temperature, and high difference pressure).
A wide variety of trim is available for the“HIGH-SERVICE” control valves.
They are designed to match Virtually any service operational requirement. All “HIGH SEVICE” trims feature a quick change to Reduce downtime for inspection, maintenance or change out, and most are cage guided, further ensuring smooth, accurate operation. Standard combined actuators multispring diaphragm actuators.
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FEATURES
S1-type
Unbalanced Single STD. trim
Description
The “S1-type” is cage guide type single seated control valves with contoured plug.
Designed for high temperature and pressure, stand against side vibration, and applied to antierosion material for trim.
Application
· General use
· For high TEMP. and diff pressure
· Class IV std. ( Class V option )
· EQ%, Linear
· Rangeability = 50 : 1
D1-type
Balanced Cage STD. trim
Description
A general purpose cage guide trim is virtually identical in all respects to the balanced single or double seat pore throttling trim except that piston ring are used in lieu of the elastic seal on the trim’s plug.
Application
· General use
· For Low & high TEMP. and diff. pressure
· Single disc Class IV std. (Class V, VI option)
· Double disc Class III std. (Class IV option)
· EQ%, Linear
· Rangeability = 50 :1
S2-type
Unbalanced Single Cascade trim
Description
A cage guided plug throttling trim designed primarily for high pressure drop water applications where cavitations, vibration and excessive wear occur with conventional trims.
Application
· High press heater-cooling water control.
· Anti-cavitations, Low noise valve
· Rangeability = 50:1
D2-type
Balanced Cage Pilot trim
Description
Pilot trim is a high performance Specialty trim that is a cage guided, uniquely balanced port throttling high temperature, high pressure differential applications that would require oversized, expensive actuator if more standard trims were utilized.
Application
· High press heater-cooling water control.
· Anti-cavitations, Low noise valve
· Rangeability = 50:1
S3-type
Unbalanced Single Super Cascade trim
Description
Cage guiding is standard. Includes a seating angle of 30° on the plug and 32° in the cage seat. This material is highly resistant to erosion and has proven most suitable for the service.
Application
· High press heater-cooling water control.
· Anti-cavitations, Low noise valve
· Rangeability = 50:1 ~ 75:1
D3-type
Balanced Cage Multi-holes trim
Description
The trim can be applied in liquid service where low level cavitation is evident.
The radically step-drilled cage design reduces the effects of cavitations along with the associated noise and erosion problems by forcing the cavitations to occur in the center of the cage, away from all metal surfaces.
Application
· High press heater-cooling water control.
· Anti-cavitations, Low noise valve
· Rangeability = 50:1
S4-type
Unbalanced Single Multi-stage trim
Description
Multi-stage trim is a high performance specialty trim that is cage guided and provides excellent control for both compressible and noncompressible fluid applications. By directing the flow through a series of staged pressure drops.
Application
· For high temperature
· For high diff. pressure.
· Anti-cavitations, Low noise valve
· Anti-erosion valve
· Rangeability = 50:1 ~ 100:1
D4-type
Balanced Cage Multi Hole-stage trim
Description
The “Multi-holes” permits to reduce the noise for high press. Steam & gas service, because of many provide holes in outer cage. The erosion in the trim is eliminated by mean that these valves are used for Anticavitations, noise, erosion service.
