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  • 2W-SL Zero Differential Pressure Plastic Solenoid Valve

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2W-SL Zero Differential Pressure Plastic Solenoid Valve

2W-SL Zero Differential Pressure Plastic Solenoid Valve

  • Model:2W-15SLN/2W-20SLN/2W-25SLN/2W-32SLN/2W-40SLN/2W-50SLN
  • Specification:DN15-DN50
  • Temperature:-10~50 ℃
  • Medium:Water, Liquid, Gas
  • Pressure:0~7bar
  • Connection method: G Thread, NPT Thread
  • Driving method:Semi-direct Acting·
  • Material:PA66 (Nylon 66)
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2W-SL Zero Differential Pressure Plastic Solenoid ValveOverview

The 2W-SL Series Zero Differential Plastic Solenoid Valve is a 2-way, 2-position, semi-direct acting (assisted-lift) diaphragm solenoid valve. Constructed with high-grade reinforced engineering plastics (such as PA66/GFPA), the valve body features exceptional corrosion resistance and a lightweight design. Its core advantage lies in the "Zero Differential Pressure" capability, enabling the valve to open or close reliably solely by electromagnetic force even in environments with zero pipeline pressure (0 Bar / 0 PSI). It is highly suitable for low-pressure, gravity-fed, vacuum, or high-flow automated control systems. It is widely applied in water treatment, environmental engineering, agricultural water-saving irrigation, food machinery, chemical/medical systems, and the pipeline control of air, water, and neutral gases.

Product Image:2W-SL Zero Differential Pressure Plastic Solenoid Valve

2W-SL Zero Differential Pressure Plastic Solenoid ValveCharacteristic

Zero Differential Pressure Startup: Utilizing a semi-direct acting structure, it operates stably within a working pressure range of 0 to 7 Bar without requiring a minimum pressure drop.

Premium Engineering Plastic Body: Made of high-performance reinforced nylon, it offers excellent anti-aging, light acid/alkali resistance, and rust-proof characteristics, being lighter and more cost-effective than brass bodies.

High-Efficiency Sealing Materials: Standardized with a long-life NBR diaphragm. EPDM or VITON seals can be customized based on chemical compatibility and medium temperature to ensure zero leakage.

Robust Protection Coil: Standard IP65 industrial protection rating with a DIN standard connector, providing dustproof and waterproof operations. Optional low-power epoxy-encapsulated coils are available for extreme outdoor conditions (rain and sunlight).

Wide Range of Sizes: Threaded ports range from 1/2" to 2" (DN15 - DN50) with large orifice designs to guarantee high system flow rates (high Cv factors).

2W-SL Zero Differential Pressure Plastic Solenoid Valvestructure principle

Structure Diagram:2W-SL Zero Differential Pressure Plastic Solenoid Valve


Material List


No.Part NameMaterial
1Valve BodyPA66
2Body O-ring (None for DN15/20)
3Diaphragm Assembly
4Diaphragm Tension SpringSS304
5Plunge Assembly
6Plunger Internal SpringSS304
7BonnetPA66
8Bolt and Spring WasherSS304
9Seat Seal PTFE (O-ring for 2W~25J)
10Armature Tube Assembly
11Solenoid Coil
12NameplateLy12
13Spring Washer 10
14Hex Thin Thread Nut M10×1SS304
15Terminal Box GasketNBR
16Terminal Box DIN43650A
17Terminal Box Fixing Screw

2W-SL Zero Differential Pressure Plastic Solenoid Valvetechnology parameter

Specification Sheet


Product ModelOrifice Size (mm)Thread Connection (G)CvWorking Pressure Normally Closed AC220V (bar)Working Pressure Normally Closed DC24V (bar)Working Pressure Normally Open AC/DC (bar)
2W-15SLN151/2"4.80~70~60~6
2W-20SLN203/4"7.60~70~60~6
2W-25SLN251"120~70~60~6
2W-32SLN321¹/₄"220~60~50~4
2W-40SLN401¹/₂"300~60~50~4
2W-50SLN502"480~60~50~4


2W-SL Zero Differential Pressure Plastic Solenoid Valvestandard size

Outline Diagram:2W-SL Zero Differential Pressure Plastic Solenoid Valve

Outline Dimension Table   (Unit:mm)


Product ModelOrifice Size (mm)Thread Connection (G)Dimensions Normally Closed A×B×C (mm)
2W-15SLN151/2"76×68×107
2W-20SLN203/4"80×68×111
2W-25SLN251"107×82×117
2W-32SLN321¹/₄"140×112×160
2W-40SLN401¹/₂"140×112×170
2W-50SLN502"159×130×190