Question 1

What is a linear electric control valve?

Accepted Answer

A linear electric control valve, with a linear electric actuator and valve body, adjusts medium flow, pressure, temperature, and liquid level. Driven by a motor, it performs linear motion, receives analog signals, and adjusts valve openings automatically. It's pivotal in HVAC, chemical, and water treatment industries' closed-loop control systems.

Question 2

What types of electric control valves do you have?

Accepted Answer

Our single-seat linear electric control valves include standard on-off, intelligent modulating, high-temperature, and low-temperature anti-freezing types, tailored for differential pressure, flow, and temperature regulation.

Question 3

What industries and scenarios suit linear control valves?

Accepted Answer

Ideal for HVAC systems, thermal heating, chemical, petrochemical, sewage treatment, energy, food, pharmaceutical, new energy, paper, textile industries. They regulate steam, water, air, oil, acid, and alkali liquids in pipelines.

Question 4

What nominal diameters and pressure ratings does the valve support?

Accepted Answer

Diameters range from DN15 to DN300. Pressure ratings: PN16, PN25, PN40, PN64, ANSI Class150/300. We tailor valve specifications to pipeline conditions and medium pressure.

Question 5

What control signals and modes does the valve support?

Accepted Answer

Supports 4-20mA, 0-10V analog signals. Digital RS485 Modbus-RTU for remote operations. On-off type supports passive switches. Connects to PLC, DDC, thermostat, and management systems.

Question 6

What is the actuator's supply voltage? Is power consumption high?

Accepted Answer

Available in AC220V, AC110V, AC24V, fitting global standards. Consumes power only during adjustment, nearly zero in static state. More efficient than pneumatic valves for continuous use.

Question 7

Does it have a feedback signal function?

Accepted Answer

All models come with opening feedback as standard. Modulating type outputs 4-20mA/0-10V feedback, while on-off type has passive contact open/closed feedback. Real-time valve status is viewable on the system for easy centralized monitoring and remote operations.

Question 8

What are the common materials for valve body and internal parts?

Accepted Answer

Valve body options include cast iron, cast steel WCB, 304, 316L stainless steel. Valve core and seat use standard stainless steel. Seals are soft (PTFE, zero leakage) or hard (hard alloy, high pressure/temp resistance). Special alloys are available for corrosive media.

Question 9

What is the protection grade? Can it be used outdoors in the open air?

Accepted Answer

Standard actuator protection is IP54. Upgraded version reaches IP65, suitable for dusty, humid environments but not for outdoor rain or water immersion.

Question 10

What is the installation method? Is the installation difficult?

Accepted Answer

Supports flange and threaded connection for horizontal installation. Vertical setup available for special conditions. Installation is simple, with easy wiring and English instructions, suitable for ordinary electricians.

Question 11

Is the valve calibrated before delivery? Does it need on-site calibration?

Accepted Answer

Valves are pre-calibrated for full open/close and range, ready to use on arrival. On-site signal logic changes allow quick recalibration via control panel or software.

Question 12

What are the common precautions during use?

Accepted Answer

Avoid overpressure, overtemperature, overload. Install bypass and steam trap for steam to prevent water hammer. Use a filter if medium has impurities. Don't force actuator. Operate idle valves regularly to prevent scaling.

Question 13

Do you support personalized customization services?

Accepted Answer

We offer OEM/ODM customization for materials, pressure, sealing, voltage, control, explosion-proof, heat dissipation, logo, and cable length. Tailored fluid solutions are available for specific projects.

Question 14

What is the warranty policy and after-sales service?

Accepted Answer

2-year free warranty. Repairs/replacements for non-human damages. Lifetime free technical support, remote services. Overseas projects receive dedicated tech personnel for swift issue resolution.

Question 15

What is the minimum order quantity and delivery time?

Accepted Answer

Support 1 piece MOQ, sample orders, bulk project orders. Standard models in stock, shipped within 2-5 days. Customized, explosion-proof, special voltage versions delivered in 7-15 days. Long-term bulk supply supported.

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