Electric Control Valve

Technical Summary

Nominal Size: ½” to 24”

Pressure Class: Class 150 to Class 1500

Temperature Range: -29°C to 400°C

Design Standards: ANSI/FCI 70-2, ASME B16.34

Face to Face: IEC 60534 / ISA standards

Control Type: Modulating / On-Off

Input Signal: 4–20 mA / 0–10 V

Power Supply: 24V DC / 110V AC / 230V AC

Construction and Materials

Body and Pressure Retaining Parts

• ASTM A216 WCB
• ASTM A351 CF8M
• ASTM A217 WC6
• ASTM A182 F316

Internal Components

• Plug: Stainless Steel / Hardened Trim
• Seat Ring: Stainless Steel
• Stem: ASTM A182 F6a, ASTM A182 F316

Sealing System

• Packing: Graphite / PTFE
• Gasket: Graphite / Spiral wound

Functional Design

Electric Control Valve regulates flow, pressure, or temperature by varying the valve opening in response to an electrical control signal. The actuator receives input from a control system such as PLC or DCS and positions the valve plug accordingly.

The valve operates with high positioning accuracy, enabling stable process control in systems where precise modulation is required. Electric actuation eliminates the need for compressed air and allows integration into automated control systems.

Material and Grade

Standard Materials

Component	Material	Grade	Typical Application
Body	Carbon Steel	ASTM A216 WCB	General industrial and utility service
Body	Stainless Steel	ASTM A351 CF8M	Corrosive and chemical process media
Body	Alloy Steel	ASTM A217 WC6	High temperature service
Plug	Stainless Steel	ASTM A182 F316	Flow control and wear resistance
Stem	Stainless Steel	ASTM A182 F6a / F316	Actuator force transmission
Seat Ring	Stainless Steel	ASTM A182 F316	Sealing and flow regulation

Extended Materials (On Request)

• Duplex Stainless Steel (F51) for chloride environments
• Alloy 20 (CN7M) for acidic service
• Hastelloy C276 for aggressive chemical media
• Inconel 625 for high temperature and severe service

Additional Information

Valve Type	Electric Actuated Control Valve
Control Characteristic	Linear / Equal Percentage / Quick Opening
Actuator Type	Electric actuator with modulating control
Fail Safe Option	Fail open / Fail close (with backup system)
Position Feedback	Analog feedback signal (4–20 mA)
Mounting	ISO mounting with actuator coupling

End Connections

• Flanged as per ASME B16.5
• Butt weld as per ASME B16.25
• Threaded ends for smaller sizes

Applications

• Oil and gas industry: flow and pressure control in process lines
• Power generation: steam and feedwater regulation
• Chemical processing: controlled dosing and flow regulation
• Water treatment: flow and pressure management systems
• Industrial utilities: temperature and flow control applications