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GC510 Pilot Balanced Cage Guided Single Seated Control Valve

Pilot control valve has a separate pressure balanced pilot plug. It has been more and more popular in the automatic control system as it is with small size, compact structure, good sealing performance, high cut off ability, long service life. This series can be used for evacuation and shut-off, especially in occasions with high temperature, high pressure and large valve size.

Features    

1, Fluid flow is from up to down, pilot balanced cage guided control valve has a separate pressure balanced pilot plug compared to the regular cage control valve.

2, The main plug is closed tightly by the output force of actuator and the unbalanced force from fluid pressure difference while the valve is closed. The pilot plug is closed tightly by the output force from actuator and the spring reaction force.

3, The flow capacity in the channel of pilot plug and seat should be bigger than the flow capacity in the guided ring and the gap between plug and cage, otherwise, the pressure balance cannot be established and this would lead to valve closure.

4, The opening of pilot plug is controlled within the range of 10% of the valve opening, otherwise the range of small flow valve can not be adjusted.

5, Small size, compact structure, good sealing performance

6, High ability of cut off, long service life. This series can be used for evacuation and shut-off, especially in occasions with high temperature, high pressure and large valve size.


Benefits    

1, Cavitation can happen even the valve seat has a small leakage in the high temperature and high pressure difference occasions, and this would lead to valve trim damage with long-term erosion to the plug and seat. So it is vital keep complete sealing without any leakage for the valve in these occasions. Normally, increasing the output force would promote the sealing level. For pilot balanced cage guided single seated control valve, the actuator size can be reduced and sealing performance can be promoted by using the unbalanced force from the flow pressure difference. And this makes the product even more competitive.

Specifications   

Body Size

1“~24”

Body Rating

ANSI Class 150#~600#

Fluid Temp.

-196~+550℃

Connections

Flanges(FF,RF,RJ,RTJ),Socket Weld, Butt Weld(SW,BW)

Body Materials

WCB,WC6,LCB,CF8,CF8M,etc

Plug Materials

410,630,316,316+Stellite,316+RTFE,etc

Seat Leakage

Metal seat:ANSI Class IV(Cv×0.01%),ANSI Class V

Rangeability

50:1~20:1

Flow Characteristics

Linear;Modefied Eq%

结构特点 Structure Characteristics   


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