2S Series 2/2 Way Normally Closed Stainless Steel Solenoid Valve

The 2S Series 2/2 Way Stainless Steel Solenoid Valve is designed for automatic on-off control of air, water, oil, gas, and compatible neutral fluids. Available in multiple threaded port sizes with stainless steel body and NBR, EPDM, or FKM seal options, the series is suitable for pipelines, water systems, cleaning equipment, and OEM machinery. HOMIPNEU supports OEM & ODM supply for industrial solenoid valve projects.

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Specifications

Parameter Description
Product Name 2S Series 2/2 Way Stainless Steel Solenoid Valve
Series 2S Series
Valve Function 2 ports, 2 positions
Control Style Normally closed
Operation Type Direct acting or direct-lift diaphragm, depending on model
Working Medium Air, water, oil, gas, and compatible neutral fluids
Body Material Stainless steel
Available Body Options SS304 or SS316 options, confirm before ordering
Port Range 1/8″ to 2″, depending on model
Connection Type Threaded connection; selected models may have other connection options
Seal Options NBR, EPDM, or FKM/Viton
Medium Viscosity Typically up to 20 CST; confirm by model
Voltage Options DC12V, DC24V, AC24V, AC110V, AC220V and other options
Voltage Tolerance Typically ±10%
Typical Applications Water systems, compressed air, oil circuits, gas control, cleaning equipment, and industrial pipelines
Selection Checks Confirm model, port size, thread standard, medium, pressure, temperature, seal, body material, voltage, and flow requirement before ordering

Common Models

Model Typical Port Size Typical Orifice
2S025-06 1/8″ 2.5 mm
2S025-08 1/4″ 2.5 mm
2S040-10 3/8″ 4 mm
2S160-10 3/8″ 16 mm
2S160-15 / 2S165-15 1/2″ 16 mm
2S200-20 3/4″ 20 mm
2S250-25 1″ 25 mm
2S350-35 1-1/4″ 35 mm
2S400-40 1-1/2″ 40 mm
2S500-50 2″ 50 mm

Product Features

2/2 Way Normally Closed Control
The 2S Series uses a two-port, two-position structure for basic on-off fluid control. In the normally closed configuration, the valve remains closed when the coil is not energized and opens after the correct electrical signal is applied.

Stainless Steel Valve Body
The stainless steel body is suitable for applications that require better corrosion resistance than a standard brass valve. SS304 and SS316 options may be selected according to the working medium and installation environment.

Wide Port Size Range
The series includes compact 1/8″ and 1/4″ models as well as larger 3/8″, 1/2″, 3/4″, 1″, 1-1/4″, 1-1/2″, and 2″ options. This allows selection according to pipeline size and required flow.

Suitable for Multiple Media
The valve can be selected for air, water, oil, gas, and compatible neutral fluids. Medium compatibility depends on the body material, seal material, temperature, viscosity, and operating pressure.

Multiple Seal Material Options
NBR is commonly used for general air, water, and oil service. EPDM may be selected for suitable water-related applications, while FKM/Viton is often chosen when higher temperature or improved chemical resistance is required.

OEM and Distributor Supply
HOMIPNEU supports voltage selection, thread confirmation, seal selection, private labeling, export packaging, bulk orders, and model matching for distributors and industrial equipment manufacturers.


Applications

Water Treatment and Pipeline Control
Used for automated water supply, drainage, filtration, cleaning equipment, cooling systems, and general water pipeline switching.

Compressed Air Systems
Suitable for compressed air pipelines, air supply equipment, testing systems, and industrial machines requiring electrical on-off air control.

Oil and Compatible Fluid Circuits
Applied to low-viscosity oil and compatible fluid systems after confirming viscosity, seal material, operating pressure, and temperature.

Industrial Gas Control
Can be used for compatible gases and inert gas applications when the valve material, seal, leakage requirement, and operating conditions are correctly selected.

Food, Cleaning, and Process Equipment
Stainless steel models are commonly considered for washing equipment, filling machinery, cleaning systems, process equipment, and installations where corrosion resistance is important.


Why Choose HOMIPNEU

HOMIPNEU supplies stainless steel solenoid valves, brass solenoid valves, pneumatic directional valves, process valves, pneumatic fittings, cylinders, air hoses, and air preparation components for industrial automation.

We help customers confirm the model, valve function, port size, thread standard, body material, seal material, coil voltage, working medium, pressure, temperature, and flow requirement before ordering.

For OEM customers and distributors, HOMIPNEU supports bulk supply, private label packaging, export cartons, model selection, and stable sourcing for solenoid valve projects.


FAQ

What is the 2S Series solenoid valve used for?
The 2S Series is used for electrical on-off control of air, water, oil, gas, and other compatible fluids in industrial pipelines and equipment.

Is the 2S Series a 2/2 way valve?
Yes. It has two ports and two operating positions and is commonly supplied as a normally closed valve.

What does normally closed mean?
Normally closed means the valve blocks flow when the coil is not energized. When the correct voltage is applied, the valve opens and allows the medium to pass.

Is every 2S model direct acting?
Small-orifice models are commonly direct acting, while larger-port models may use a direct-lift diaphragm structure. The exact operating structure should be confirmed by model.

Can the valve be used with water and oil?
Yes, when the selected seal material, body material, viscosity, pressure, and temperature are compatible with the medium.

Can the 2S Series be used for steam?
Steam suitability must be confirmed separately. Standard NBR versions should not automatically be described as steam valves; the seal, coil, temperature rating, and valve construction must match the steam conditions.

What should be confirmed before ordering?
Please confirm model, port size, thread type, body material, seal material, medium, operating pressure, temperature, coil voltage, flow requirement, and installation space.

Does HOMIPNEU support OEM and distributor orders?
Yes. HOMIPNEU supports OEM and ODM supply, bulk orders, private labeling, export packaging, and specification confirmation for 2S Series stainless steel solenoid valves.


OEM & ODM Support

HOMIPNEU provides OEM and ODM support for stainless steel solenoid valves, brass solenoid valves, 2/2 way fluid valves, pneumatic directional valves, process valves, fittings, cylinders, air hoses, and related industrial control components. Customers can provide the model, port size, thread standard, body material, seal, voltage, medium, pressure, temperature, packaging requirement, and expected quantity for accurate selection and supply.

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Free Sample Request Process:

  1. Select Your Sample: Browse through our product range and choose the sample you’d like to receive.

  2. Submit Your Request: Fill out the sample request form with your shipping details.

  3. Shipping Cost: While the sample itself is free, the buyer is responsible for covering the shipping fee. Please negotiate the shipping cost with us.

  4. Processing: Once your payment is confirmed, we will process your sample request and ship it to your address.

  5. Receive Your Sample: Your sample will be delivered to you within the estimated shipping time. Enjoy trying our product!

1. The warranty period of this product is eighteen months (subject to thefuselage bar code information). During the warranty period, if the productfails or is damaged under normal use according to the operating manual, ourcompany will be responsible for free maintenance.

2. During the warranty period, if damage is caused due to the followingreasons,a certain maintenance fee will be charged,

  • Machine damage caused by mistakes in use and unauthorized repairsand modifcations;
  • Machine damage caused by fre, food, abnormal voltage, other naturaldisasters and Level 2 disasters;
  • Hardware damage caused by artifcial fall and transportation afterpurchase;
  • Machine damage caused by failure to operate according to the user manual provided by our company;
  • Failure and damage caused by obstacles other than the machine (such asexternal equipment factors).

3. When the product fails or is damaged, please fll in all the contents in the”Product Warranty Card” correctly and in detail.

4. The charge of maintenance fees shall be based on our company’s latestadiusted “Maintenance Price List”.

5. This warranty card will not be reissued under normal circumstances.Please keep this card and show it to the maintenance personnel during thewarranty.

6. If you have any questions during the service process, please contact ouragent or our company in time.The company is committed to upgrading new products. If there are anychanges, you can download them from the company website.