Question 1

What is a linear electric control valve?

Accepted Answer

A linear electric control valve comprises a linear actuator and valve body. The motor-driven stem adjusts flow, pressure, temperature, and liquid level. It accepts analog signals for automatic adjustment, serving HVAC, chemical, and water treatment industries as core equipment for automation.

Question 2

What types of electric control valves do you have?

Accepted Answer

Our single-seat valves include standard on-off, intelligent modulating, high-temp, and low-temp types, handling differential pressure, flow, and temperature regulation.

Question 3

What industries and scenarios are linear control valves suitable for?

Accepted Answer

Used in HVAC, heating, chemical, sewage, power, food, pharma, new energy, paper, textile. Suitable for steam, water, air, oils, acids, and alkalis.

Question 4

What nominal diameters and pressure ratings does the valve support?

Accepted Answer

Diameters from DN15 to DN300. Pressure ratings: PN16, PN25, PN40, PN64, ANSI Class150/300. Custom specs available per pipeline and pressure.

Question 5

What control signals and modes does the valve support?

Accepted Answer

Supports 4-20mA, 0-10V signals, RS485 Modbus-RTU for digital. On-off supports passive switch. Connects to PLC, DDC, thermostat, management systems.

Question 6

What is the supply voltage of the actuator?

Accepted Answer

Power options: AC220V, AC110V, AC24V. Consumes power only during adjustment, near-zero in static state. More efficient than pneumatic valves for long-term use.

Question 7

Does it have a feedback signal function?

Accepted Answer

Models include a standard opening feedback function. Modulating type outputs 4-20mA/0-10V feedback; on-off type has passive contact for full open/close feedback. Real-time valve status can be viewed on the computer system for centralized monitoring and remote operations.

Question 8

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

Accepted Answer

Valve body materials: cast iron, cast steel WCB, 304/316L stainless steel. Valve core/seat: standard stainless steel. Seals: soft (PTFE, zero leakage) and hard (hard alloy, high pressure/temp resistance). Special alloys for corrosive media can be customized.

Question 9

What is the protection grade?

Accepted Answer

Standard actuator protection: IP54. Upgraded version: IP65, suitable for humid pump rooms, resists dust. Not suitable for outdoor rain or water immersion.

Question 10

What is the installation method?

Accepted Answer

Valve supports flange/threaded connection for horizontal installation. Vertical installation customizable. Simple installation, easy wiring, detailed English instructions provided. Ordinary electricians can handle installation and commissioning.

Question 11

Is the valve calibrated before delivery?

Accepted Answer

Valves are pre-calibrated for full open/close, zero point, and range. Ready to use upon arrival. On-site recalibration of signal logic and range is quick via control panel or software.

Question 12

What are the common precautions during use?

Accepted Answer

Avoid overpressure, overtemp, overload. Install bypass pipeline and steam trap for steam conditions to prevent water hammer. Use a filter for impurity-containing media. Do not pry actuator. Operate regularly if idle to prevent scaling/jamming.

Question 13

Do you support personalized customization services?

Accepted Answer

OEM/ODM customization includes valve material, pressure, sealing type, voltage, control signal, explosion-proof grade, heat dissipation, appearance LOGO, cable length. Exclusive solutions provided for specific project conditions.

Question 14

What is the warranty policy and after-sales service?

Accepted Answer

2-year free warranty for non-human damage to actuators/valves. Free lifetime technical consultation, remote commissioning, and troubleshooting. Dedicated technical liaison for overseas projects.

Question 15

What is the minimum order quantity and delivery time?

Accepted Answer

Support 1 piece MOQ, sample orders, and bulk projects. Conventional models in stock ship in 2-5 days. Customized, explosion-proof, and special voltage versions deliver in 7-15 days. Long-term bulk supply supported.

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