Pneumatic Diaphragm Globe Control Valve, Cage-Guided, CF8M

Key Specifications / Features

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Our Pneumatic Small-Port Single-Seated Control Valves are designed for heavy-duty service. The compact valve body, featuring an S-shaped flow passage, ensures low pressure loss, large flow capacity, rangeability, and high accuracy flow characteristics. Equipped with a multi-spring diaphragm actuator, the control valve is compact and delivers substantial output force.The valve plugs come in a wide range of Cv values. Flow shutoff performance uses a simple yet powerful diaphragm actuator with multiple springs. Materials: ASTM A351 CF8M. Temperature Range: -196 to +450°C. Flow characteristics: Equal percentage, Linear. ANSI Class 125 LB, 150 LB, 300 LB, 600 LB. These control valves are ideal for reliable control of small flows in high- or low-temperature, high differential pressure process lines.
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Detail Information

SPECIFICATIONS
Product Name: Pneumatic Diaphragm Cage-Guided Globe Control Valves
Key Features: Pneumatic Actuator, Small-Port, Cage-Guided, Single-seated
Materials: ASTM A351 CF8M, CF3M, CF8, CF3, ASTM A216 WCB, WC6, ASTM A352 LCB 
Sizes: 3/4 Inch - 3 Inch, DN20-DN80
Pressure Rating: 
ANSI Class 125 LB, 150 LB, 300 LB, 600 LB
JIS 10K, 16K, 20K, 30K, 40K
PN16, PN40, PN64, PN100
Bonnet:
Plain bonnet (-17 to 230°C)
Extension bonnet (-45 to -17°C and 230 to 566°C)
Integral cast type (-100 to -45°C)
Welded type (-196 to -100°C)
Actuator Type: Single-acting diaphragm actuator
Diaphragm material: Cloth embedded nylon and ethylene propylene rubber
Ambient temperature: -30 to 70°C
Temperature Range: -196 to +450°C
Flow characteristics: Equal percentage, Linear
Leakage: Metal Seat, Soft Seat
Linearity:
Without positioner: Within ±5% F.S.
With positioner: Within ±1% F.S.
Valve action: 
FO: Air to close(Direct action actuator is combined.)
FC: Air to open(Reverse action actuator is combined.) 
End connection: 
Flanged End: Flat Face (FF), Raised Face (RF), Ring Joint (RJ), Large Groove (LG)
Welded End: Socket Weld (SW), Butt Weld (BW)
Threaded End: Threaded, RC, NPT


Standard Type



Bonnet Type






 
Flow characteristicsFlow Characteristics

External Dimensions for Standard, Bellows and Extension

Actuator orientation
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