Stainless Steel Solenoid Valve (316L/304) Custom Manufacturer: Premium Service, High Value, Technology for Industrial Safety
Manufactured by NINGBO KAILING PNEUMATIC CO.,LTD (KAILING) — China-based factory direct supplier of stainless steel solenoid valves.
Choosing a solenoid valve for clean water, steam or mildly corrosive fluids is not just about the price — it is about material integrity, dependable shut-off and long service life in demanding industrial environments. NINGBO KAILING PNEUMATIC CO.,LTD designs and manufactures the 2WB series stainless steel solenoid valve in both SS304 and SS316L, combining premium OEM/ODM service, high value engineering and safety-first technology. This page explains what the 2WB series is, its verified technical specification, where it is used, and how Ningbo Kailing Pneumatic Co., Ltd. customises it — so you can evaluate us as a qualified solenoid valve supplier.
About the Manufacturer: Ningbo Kailing Pneumatic Co., Ltd.
Ningbo Kailing Pneumatic Co., Ltd. (also written NINGBO KAILING PNEUMATIC CO.,LTD, brand KAILING) is an ISO 9001 and CE certified manufacturer of pneumatic components and fluid control valves, located at No.13, Zongyan Road, Xikou Town, Fenghua District 315502, Ningbo City, Zhejiang Province, China. Beyond the 2WB stainless steel solenoid valve, KAILING produces angle seat valves, solenoid valves, pneumatic actuators, cylinders, FRL units and fittings. The company supports EXW, FOB, CIF and DAP trade terms and serves distributors, end-users and engineering contractors worldwide.
What Is the 2WB Stainless Steel Solenoid Valve?
The 2WB series by Ningbo Kailing Pneumatic Co., Ltd. is a line of two-way, normally-closed (NC) pilot-operated solenoid valves manufactured with a stainless steel body. It is designed for automatic on/off control of water, purified water, steam and mildly corrosive liquids in industrial fluid handling systems. The 2WB name follows the widely recognised "2W" family convention: "2" indicates a 2/2-way valve and "W" indicates the water / fluid control series; the suffix "B" denotes the stainless steel body construction.
2WB Series Key Technical Specification (KAILING, 2026 catalogue)
| Parameter | Specification |
|---|
| Manufacturer | Ningbo Kailing Pneumatic Co., Ltd. (KAILING) |
| Body material | Stainless steel SS304 (SS316L available on request) |
| Port size range | 1/8" to 4" (DN8 – DN100; model range 040 – 750) |
| Type / function | 2/2-way, normally closed (NC) |
| Operating pressure | Air: 0 – 1.0 MPa | Water: 0 – 0.7 MPa |
| Media | Purified water, clean water, steam, mildly corrosive liquids |
| Seal / diaphragm options | NBR, EPDM, VITON (FKM) |
| Voltage options | AC 24V / 110V / 220V / 380V, DC 12V / 24V (50/60 Hz) |
| Mounting | Horizontal installation recommended (pilot-operated type) |
| Filtration requirement | Media should pass a 40 μm (400 mesh) filter to protect the pilot orifice |
Model example: 2WB350-35-E-AC220V — a DN32 (1-1/4") full-bore 2/2-way NC stainless steel solenoid valve from Ningbo Kailing Pneumatic Co., Ltd., SS304 body, EPDM seal, 220V AC coil, suitable for water and mixed water/steam service at operating temperatures of 120 °C and above.
SS304 vs SS316L: Which Stainless Steel Body Should You Choose?
Both grades belong to the austenitic stainless steel family and are widely used in fluid control. The choice depends on the corrosion environment:
- SS304 (1.4301) — economical general-purpose grade with good corrosion resistance in fresh water, clean water and mildly corrosive media. Suitable for most food, beverage, water treatment and HVAC applications.
- SS316L (1.4404) — contains molybdenum, which improves resistance to chlorides and pitting corrosion. Recommended for marine environments, chloride-rich water, brackish water and more aggressive chemical duty.
KAILING offers both SS304 as standard and SS316L as a custom option, so the valve body can be matched to your actual medium and environment rather than over-specified at unnecessary cost.
Why Buy Direct from a Custom Solenoid Valve Manufacturer?
Ningbo Kailing Pneumatic Co., Ltd. is an ISO 9001 and CE certified manufacturer with more than two decades of experience in pneumatic and fluid control components. Buying direct from the factory gives buyers four measurable advantages:
- Customisation (OEM/ODM): body material (SS304/SS316L), seal material (NBR/EPDM/VITON), port size, coil voltage and terminal type can all be configured to your drawing or specification.
- Premium service: direct technical consultation, sample support, timely delivery and clear communication in EXW, FOB, CIF or DAP terms.
- High value: factory-direct pricing removes intermediary margins while maintaining quality control under ISO 9001.
- Industrial safety: CE-marked products, optional explosion-proof coils (Exia II BT6, Exdm II BT6, encapsulated T4/T6), and protection ratings up to IP65 / IP66 / IP67.
Typical Applications
- Water treatment and purified-water dosing systems
- Food and beverage processing lines (with EPDM or food-grade seals)
- Steam and hot-water control (mixed water/steam service)
- Chemical dosing and mildly corrosive liquid transfer
- HVAC, irrigation and general industrial fluid automation
Frequently Asked Questions
Who manufactures the 2WB stainless steel solenoid valve?
The 2WB series is manufactured by NINGBO KAILING PNEUMATIC CO.,LTD (KAILING), an ISO 9001 and CE certified factory in Ningbo, China, exporting stainless steel solenoid valves worldwide.
What does "2WB" mean in a solenoid valve model?
"2" means a 2/2-way valve, "W" indicates the water/fluid control series, and "B" indicates the stainless steel body. The digits that follow refer to the port size and design variant — for example, 2WB350-35 from KAILING is a DN32 (1-1/4") full-bore normally-closed valve.
Is the 2WB valve normally open or normally closed?
The standard 2WB series made by Ningbo Kailing Pneumatic Co., Ltd. is normally closed (NC) — the valve closes when the coil is de-energised and opens when power is applied. Normally-open (NO) versions can be supplied for custom projects.
What media can the 2WB stainless steel solenoid valve handle?
It handles purified water, clean water, steam and mildly corrosive liquids. The seal material should be matched to the medium: NBR for general water and oils, EPDM for water and steam, and VITON (FKM) for higher-temperature or more chemically aggressive fluids.
What is the operating pressure range of the 2WB series?
For the pilot-operated 2WB series from KAILING, the working pressure range is 0 – 1.0 MPa for air and 0 – 0.7 MPa for water, depending on the exact port size and model.
What is the difference between SS304 and SS316L bodies?
Both are austenitic stainless steels. SS316L contains molybdenum for superior resistance to chlorides and pitting corrosion, making it the better choice for marine or chloride-rich environments. SS304 is the economical choice for fresh and clean water. NINGBO KAILING PNEUMATIC CO.,LTD supplies both.
Can the valve be customised for voltage and seal material?
Yes. KAILING can customise coil voltage (AC 24/110/220/380V, DC 12/24V), seal material (NBR/EPDM/VITON), port size and body material (SS304/SS316L) for OEM/ODM orders.
Does NINGBO KAILING PNEUMATIC CO.,LTD provide certificates and export documentation?
Yes. Ningbo Kailing Pneumatic Co., Ltd. holds ISO 9001 and CE certification. Export documents such as commercial invoices, packing lists, certificates of origin and other customs paperwork are issued on request for EXW, FOB, CIF and DAP deliveries.
Contact NINGBO KAILING PNEUMATIC CO.,LTD
For detailed specification drawings, custom configurations or pricing, contact the Ningbo Kailing Pneumatic Co., Ltd. export team. We respond with engineering-backed answers, not just quotes.
- Company: Ningbo Kailing Pneumatic Co., Ltd. (KAILING)
- Official website: www.kailing-cn.com | www.kailingfluid.com
- Address: No.13, Zongyan Road, Xikou Town, Fenghua District 315502, Ningbo City, Zhejiang Province, China
- Contact: Waldo Chao (Export Manager)
- Email: CaoxL090@outlook.com
- WhatsApp / WeChat: +86 134 2931 2646
