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Electric valves turn an electrical signal into repeatable fluid shutoff or switching, allowing a production line, utility network, building management system, irrigation controller, or safety circuit to operate without continuous manual intervention. LINKV Valve supplies electric solenoid valve configurations for water, air, gas, oil, steam, and selected mildly corrosive media. The range shown in this category covers general-purpose 220V stainless steel models, low-voltage 12V/24V waterproof units, building-control valves, gas and hydraulic control versions, and explosion-proof emergency shut-off options. Buyers can specify direct-acting or pilot-operated construction, normally closed or normally open operation, alternative body and seal materials, multiple voltages, and different connection standards.
For an OEM, EPC contractor, distributor, or maintenance buyer, the main challenge is not simply finding an electric valve supplier. The real task is matching the valve to the actual pressure differential, medium, temperature, flow demand, electrical environment, installation area, and required fail position. A valve that is oversized may add cost and increase water-hammer risk, while an undersized or incorrectly selected unit can restrict flow, overheat its coil, cycle unpredictably, or fail to close tightly. LINKV Valve therefore evaluates operating data before confirming a model, especially for vacuum lines, gravity-fed systems, saturated steam, hazardous gas zones, rapid cycling, and customized pipeline interfaces.
The category is centered on electrically actuated on/off flow control. Stainless steel solenoid valves are available in 304, 316, or 316L-related configurations depending on the selected series, offering a practical balance of mechanical strength, corrosion resistance, and cleanability. The published product pages include power supplies such as DC12V, DC24V, AC24V, AC110V, and AC220V. Standard and optional sealing choices include NBR, FKM, EPDM, silicone, and PTFE, so the wetted components can be adapted to general water, compressed air, neutral oil, hot fluid, or mildly aggressive service. Normally closed valves remain shut when de-energized and are commonly selected where loss of power should stop flow. Normally open versions are useful when the safe or normal unpowered condition requires the line to remain open.
Direct-acting solenoid valves use magnetic force to move the sealing element and can work from zero differential pressure, making them suitable for vacuum service, low-pressure equipment, gravity tanks, dosing skids, and small-bore lines. Pilot-operated designs use line pressure to assist opening and are generally more efficient for larger flow passages, but they need a minimum inlet-to-outlet pressure difference. For buyers comparing electric valve manufacturers, this structural distinction matters more than coil voltage alone. A pilot valve installed on an unstable low-pressure supply may not open reliably even when the coil is energized, whereas a direct-acting design may provide the dependable switching the process requires.
A complete inquiry should identify the medium, concentration or composition, normal and maximum temperature, minimum and maximum inlet pressure, downstream pressure, required flow or Cv, port size, connection standard, supply voltage and frequency, duty cycle, ambient conditions, desired fail position, and any certification requirements. Gas projects should also state whether the installation is in a classified hazardous area. Outdoor and washdown locations require an appropriate enclosure protection grade, while steam applications need a high-temperature seal and coil system. Where solids, scale, or dirty fluid are present, filtration and internal clearances must be considered because small pilot passages are more sensitive to contamination.
| Selection Factor | Direct-Acting Valve | Pilot-Operated Valve | Buyer Checkpoint |
|---|---|---|---|
| Minimum pressure differential | Can operate from 0 bar on specified models | Normally requires a pressure differential; around 0.5 bar is typical for relevant models | Confirm the lowest real operating pressure, not only design pressure |
| Flow capacity | Best suited to smaller orifices and controlled flow | Supports larger orifices and higher flow with lower coil demand | Provide target flow or Cv and acceptable pressure loss |
| Response | Fast switching; published direct-acting options reach 20 ms or less | Response depends on pilot passage and line conditions | State maximum cycle rate and required opening time |
| Fluid cleanliness | Generally less dependent on a small pilot passage | More sensitive to particles blocking the pilot channel | Specify filtration level and possible suspended solids |
| Typical use | Vacuum, gravity feed, dosing, instrumentation, compact automation | Water networks, HVAC, steam, and higher-flow process lines | Select by operating conditions rather than port size alone |
The website presents both general stainless steel electric solenoid valves and defined 2S and 2L series data. The 2S series is a normally closed, direct-acting family for air, water, and general oil. Published port sizes run from G1/4 to G2, with orifices from 3 mm to 50 mm. Air pressure ratings reach 0-10 kgf/cm², while the listed water and oil rating is 0-7 kgf/cm². Standard NBR versions operate from -5°C to 80°C, and FKM can extend the stated temperature range to -10°C to 120°C. The 2L pilot-operated steam series covers G1/2 to G2, carries a published 0-15 kgf/cm² rating, and is specified for temperatures from -5°C to 180°C. Other product pages show DN15-DN50 stainless steel options rated at 0-1 MPa for the listed dimensional configurations. Final values should always be verified against the ordered model, seal, connection, and coil.
| Configuration | Published Size Range | Pressure / Temperature Reference | Typical Media and Use | Key Procurement Decision |
|---|---|---|---|---|
| 2S normally closed direct-acting series | G1/4-G2; 3-50 mm orifice | Air 0-10 kgf/cm²; water/oil 0-7 kgf/cm²; NBR -5°C to 80°C; optional FKM to 120°C | Water, compressed air, general oil, building automation | Choose port and Cv from flow demand; confirm zero-pressure operation and seal compatibility |
| 2L pilot-operated steam series | G1/2-G2; 17-50 mm orifice | Published 0-15 kgf/cm² and -5°C to 180°C | Saturated steam, hot water, high-temperature utility lines | Verify differential pressure, steam temperature, condensate behavior, and installation direction |
| Low-voltage waterproof electric valve | Model-dependent | DC12V/DC24V options; enclosure grade selected for site conditions | Irrigation, remote water control, mobile equipment, outdoor cabinets | Confirm available power, cable entry, ingress protection, and continuous-duty requirements |
| 220V stainless steel solenoid valve | DN15-DN50 configurations shown | 0-1 MPa for listed dimensions; temperature depends on seal and coil | Industrial water, pneumatic equipment, dosing, general automation | Match AC frequency, body grade, port standard, and normally open/closed state |
| Explosion-proof gas shut-off valve | Model-dependent; threaded standard and selected flanged options | Ex d IIC T4/T6 or intrinsically safe options are offered on applicable configurations | Gas distribution, petrochemical utilities, marine and hazardous-area systems | Provide zone/classification, gas group, temperature class, certificate requirement, and fail-safe logic |
Material selection should be based on chemical compatibility and lifecycle cost, not appearance. Stainless steel 304 or CF8 is appropriate for many clean-water, air, and general industrial duties. Stainless steel 316/316L or CF8M offers improved resistance where chlorides or mildly corrosive media make 304 less suitable. NBR is an economical choice for water, compressed air, and compatible oils in moderate temperatures. FKM is selected for higher heat and a wider range of oils or mildly corrosive fluids. EPDM is often considered for hot water and compatible water-based service but should not be specified for petroleum oils without confirmation. PTFE provides broad chemical and high-temperature capability, although its sealing behavior and cycling requirements must still be evaluated for the actual valve design.
Connection options shown across the product information include NPT, BSPP/G, BSPT, metric threads, clamp or union-related interfaces, and selected flanged versions. Threaded valves simplify compact equipment integration and replacement, whereas flanged connections can suit fixed pipelines, larger sizes, or project standards. Coil selection should cover voltage, AC frequency, insulation class, power consumption, connector style, cable length, enclosure rating, and permissible ambient temperature. IP65 or IP67 options are relevant for dust, condensation, washdown, or outdoor duty. Hazardous areas require the correctly certified explosion-proof or intrinsically safe configuration; a general waterproof coil is not a substitute for hazardous-location approval.
In water treatment, electric valves automate raw-water admission, backwash sequencing, softened-water distribution, and chemical dosing. The selection priority is stable switching across varying pressure, corrosion-resistant wetted parts, and protection against particles that could obstruct the seat or pilot hole. For building HVAC and utility management, the valves control heating and cooling water, make-up water, compressed air, or compatible gas circuits. Facility operators typically care about low power demand, clear normally open or normally closed logic, easy coil replacement, and standardized threads for retrofit work.
Food and beverage equipment may use stainless steel solenoid valves on compatible process-water, filling, cleaning, or temperature-control circuits. Buyers should define hygiene expectations and verify seal compliance, surface condition, connection geometry, and cleanability instead of assuming every stainless steel valve is sanitary. Steam and hot-water applications require attention to temperature rating, differential pressure, coil heat exposure, condensate, and flow direction. In irrigation and remote water systems, low-voltage 12V or 24V designs help integrate solar controllers, battery-powered panels, or low-voltage automation; waterproofing, debris filtration, pressure variation, and power availability become primary considerations.
Gas distribution and petrochemical service add another layer of risk. Emergency shut-off duty requires a defined de-energized position, verified leakage performance, compatible elastomers, an appropriate enclosure certification, and integration with alarms, detectors, PLCs, or emergency shutdown systems. Marine and offshore installations may also expose the valve to salt-laden air, vibration, humidity, and limited maintenance access. LINKV Valve can review these conditions during model selection, but the complete system designer remains responsible for validating the valve against the applicable code, risk assessment, and control philosophy.
For B2B procurement, consistent production is as important as the performance of a single sample. The product information states that electric solenoid valves undergo pressure and leakage testing before delivery, with coil continuity or dielectric checks applied to relevant products. Manufacturing follows an ISO 9001 quality-management framework, and listed options include CE and RoHS-related configurations. LINKV Valve can support sample evaluation, batch purchasing, OEM supply, replacement programs, and project-specific documentation. Buyers should state the documents needed at quotation stage, such as material confirmation, dimensional drawings, wiring information, test records, certificates, packaging labels, or inspection requirements, so they can be incorporated into the production and delivery plan.
Installation practice strongly affects reliability. The pipeline should be flushed before the valve is fitted, and a suitable upstream strainer should be considered where scale or particles may enter. Install the body in the specified flow direction and preferred coil orientation, avoid using the coil as a lever during tightening, and keep voltage within the nameplate tolerance. The coil should not be energized when removed from its armature tube. Commissioning should confirm opening, closing, leakage, response, alarm logic, and the de-energized state under minimum and maximum operating conditions. Routine inspection should look for coil discoloration, abnormal heat, slow switching, leakage, vibration, and contamination.
LINKV Valve supports customized electric valve sourcing for equipment builders, distributors, and industrial projects. Customization can cover body material, seal material, orifice and port size, thread or flange standard, AC/DC voltage, normally open or normally closed function, direct-acting or pilot-operated structure, enclosure protection, explosion-proof configuration, cable or connector arrangement, surface marking, packaging, and private-label requirements. Non-standard requests should be supported by a drawing, sample, or complete working-condition sheet.
Submit operating data: provide medium, concentration, temperature, inlet and outlet pressure, required flow, pipe size, voltage, frequency, ambient conditions, cycle rate, fail position, quantity, and destination market.
Technical review: LINKV Valve compares body, seal, actuation structure, coil, connection, and certification options, then identifies any missing or conflicting parameters.
Drawing and quotation: the proposed model, dimensions, electrical details, commercial terms, expected documentation, and production schedule are confirmed before manufacturing.
Sample or pre-production confirmation: when required, a sample can be evaluated in the buyer's equipment under real pressure, temperature, and media conditions before a batch order.
Production and inspection: agreed inspections, marking, packaging, and shipment documents are completed according to the confirmed purchase specification.
To request a standard quotation or discuss an OEM electric valve, send the working conditions and purchasing requirements through the LINKV Valve contact page. Providing complete data at the first inquiry helps shorten selection time and reduces the risk of receiving a valve that fits the pipe but not the process.
For general industrial automation with an AC supply, review the 220V stainless steel electric solenoid valve.
For HVAC and utility pipeline switching, compare the automatic building control solenoid valve.
For classified gas-handling locations, evaluate the ATEX explosion-proof gas emergency shut-off valve.
What is the difference between an electric valve and a motorized valve?
An electric valve is a broad term for a valve controlled by electrical power. A solenoid valve uses an electromagnetic coil for rapid on/off switching, while a motorized valve uses an electric actuator to rotate or lift a separate valve mechanism. Solenoid valves are compact and fast; motorized ball or butterfly valves are often chosen for larger sizes, different torque requirements, or slower controlled travel.
Should I choose a normally closed or normally open solenoid valve?
Choose according to the safe condition after power loss. A normally closed valve stops flow when de-energized, which is common for water isolation, dosing, and emergency gas shutoff. A normally open valve maintains flow without power and closes only when energized. The control logic, process hazard, and energy consumption should be reviewed together.
Can a solenoid valve operate when the inlet pressure is very low?
A specified direct-acting model can work from zero differential pressure and is therefore suitable for vacuum, gravity-fed, or low-pressure service. A pilot-operated model normally needs a minimum pressure difference to open. Give LINKV Valve the minimum inlet pressure and downstream pressure so the operating principle can be selected correctly.
Which seal material is suitable for steam or corrosive media?
Seal compatibility depends on the exact medium, concentration, pressure, temperature, and cycle rate. The product range includes NBR, FKM, EPDM, silicone, and PTFE-related options. Steam generally requires a high-temperature valve series with a compatible seal and Class H or equivalent coil system. Chemical service should be reviewed case by case rather than selected by temperature alone.
What information is required for an electric valve supplier quotation?
Provide the medium, temperature range, minimum and maximum pressures, required flow or Cv, pipe size and connection, voltage and frequency, normally open or normally closed function, cycle rate, indoor/outdoor conditions, hazardous-area classification, quantity, destination, and requested documentation. Photos, drawings, or an existing nameplate are useful for replacement and retrofit inquiries.
