Micro Flow Control Valve, A216 WCB, 3/4-3 Inch, 150-600 LB

Body Type

Straight-Through

Nominal Size

3/4 Inch, 1 Inch, 1-1/4 Inch, 1-1/2 Inch, 2 Inch, 2-1/2 Inch, 3 Inch

Pressure Rating

• ANSI Class 125 LB, 150 LB, 300 LB, 600 LB
• JIS 10K, 16K, 20K, 30K, 40K
• PN1.6, 4.0, 6.4, 10.0 Mpa

End Connection

• Flanged End: FF, RF, RJ, LG
According to ANSI B16.5, JIS B2201, JB/T79.1, JB/T79.2
• Welded End: SW, BW
• Threaded End: Threaded, RC, NPT

Material

ASTM A216 WCB, ASTM A217 WC6, ASTM A352 LCB, ASTM A351 CF8, ASTM A351, CF8M, ASTM A351 CF3M, ASTM A351 CF3

Bonnet Types

Plain Bonnet: Suitable for temperatures ranging from -17°C to 230°C.

Extension Bonnet Type 1: Designed for extreme temperatures, handling ranges from -45°C to -17°C and 230°C to 566°C.

Extension Bonnet Type 2 (Cryogenic):

• Integral Cast Type: Ideal for temperatures from -100°C to -45°C.
• Welded Type: Suitable for cryogenic applications from -196°C to -100°C.

Bellows Type: Used for specialized applications where complete isolation of the fluid is required.

Actuator Types

• Single-Acting Diaphragm Actuator: Actuator that uses a single diaphragm to create motion.

• Spring-Type Piston Actuator: Uses a spring-loaded piston for actuation.

• Double-Acting Piston Actuator: Employs pistons in a double-acting configuration, providing actuation force in both directions.

Diaphragm Materials

• Cloth-Embedded Nylon: A durable diaphragm material reinforced with cloth.
• Ethylene Propylene Rubber: A synthetic rubber material with good flexibility and resistance to various chemicals.

Spring Range

• 20 to 100 kPa (0.2 to 1.0 kgf/cm²)
• 40 to 200 kPa (0.4 to 2.0 kgf/cm²)
• 80 to 240 kPa (0.8 to 2.4 kgf/cm²)

Supply Pressure

• 0.14 MPa
• 0.16 MPa
• 0.28 MPa
• 0.4 MPa
• 0.5 MPa

Air Connection

Rc1/4: Metric internal thread connection.
1/4 NPT: Imperial internal thread connection.

Ambient Temperature Range

-20°C to 70°C

Valve Action

• FO (Fail Open): Air to close, using a direct action actuator.
• FC (Fail Close): Air to open, using a reverse action actuator.

Optional Accessories

• P/P or I/P Positioner: Pneumatic or electronic positioners for precise valve control.
• Air Filter Regulator: Filters and regulates the air supply.
• Top-Mounted or Side-Mounted Handwheel: Manual operation handwheel for additional control.
• Limit Switch: Provides a signal indicating the position of the valve.
• Solenoid Valve: Electrically controlled valve for switching air supply.
• Motion Transmitter: Transmits the position of the valve stem.
• Booster Relay: Enhances the pressure signal for quicker response.
• Lock-Up Valve: Locks the valve in position in case of supply air failure.
• Air Lock Relay: Maintains the position of the valve upon loss of air supply.
• Others: Various additional accessories to customize functionality.

Performance

Flow Characteristics:

• Equal Percentage: Provides a non-linear flow characteristic, typically used for applications requiring fine control.
• Linear: Provides a linear relationship between valve position and flow rate.

Leakage:

• Metal Seat: Conforms to ANSI B16.104 Class II, with leakage less than 0.5% of maximum valve capacity.
• Soft Seat: Conforms to ANSI B16.104 Class VI, with leakage less than 0.00001% of maximum valve capacity.

Inherent Rangeability:

• 50:1: Standard rangeability.
• 75:1: Optional for full port size.

Hysteresis Error:

• Without Positioner: Within 3% of Full Scale (F.S.).
• With Positioner: Within 1% of Full Scale (F.S.).

Linearity:

• Without Positioner: Within ±5% of Full Scale (F.S.).
• With Positioner: Within ±1% of Full Scale (F.S.).