Description
1/8" Stainless Steel Solenoid Valve 0–1 Bar – CS Fluid Power S1-2130
The CS Fluid Power S1-2130 is a compact 2/2 way normally closed direct-acting solenoid valve designed for accurate control of liquids and gases at low operating pressures from 0 to 1 Bar.
Its direct-acting design requires no minimum pressure differential, making the S1-2130 suitable for gravity-fed, low-pressure and zero-pressure applications. A dry-armature isolating diaphragm separates the controlled media from the solenoid armature mechanism, providing additional protection when handling compatible slightly aggressive fluids.
The standard S1-2130 features a stainless steel body with EPDM seals, 3mm orifice and 1/8" BSP connection. Alternative PVC and PTFE bodies are available for applications requiring different chemical resistance. The manufacturer also offers NBR, silicone and FKM seal configurations.
Valve Function & Operation
Function: 2/2 way normally closed
Operation: Direct acting
Valve Design: Dry armature with isolating diaphragm
Normal Position: Closed when de-energised
Energised Position: Open
Minimum Differential Pressure: 0 Bar
Operating Pressure: 0 to 1 Bar
Mounting Position: Any position
Unlike pressure-assisted solenoid valves, the S1-2130 operates directly from the solenoid and therefore does not require upstream pressure to open the valve.
This makes it particularly useful for low-pressure process systems, header tanks, gravity-fed equipment and applications where pressure can fall to zero.
Ports & Connections
Port Size: 1/8"
Standard Thread: BSP
Optional Threads: NPT or Rc
Orifice: 3mm
The compact 1/8" connection and 3mm orifice make the S1-2130 particularly suitable for smaller process lines, dosing equipment and OEM machinery.
Pressure & Flow
Operating Pressure: 0 to 1 Bar
Minimum Pressure: 0 Bar
Orifice: 3mm
Water Flow: 4.3 L/min at 1 Bar pressure drop
Maximum Media Viscosity: 50 cSt
Vacuum: Not suitable
Construction & Materials
Standard Body: Stainless steel
Optional Body: PVC
Optional Body: PTFE
Valve Bonnet: Stainless steel
Spring: Stainless steel
Armature Core: Stainless steel
Solenoid Tube: Stainless steel
Standard Seal: EPDM
The internal construction uses stainless steel for the bonnet, spring, armature core and solenoid tube, while the body can be specified in stainless steel, PVC or PTFE according to the application.
Seal & Media Compatibility
Standard configuration: EPDM
Alternative seal options include:
✓ NBR
✓ Silicone
✓ FKM / Viton
✓ PTFE Custom Option
Suitable for compatible:
✓ Air
✓ Water
✓ Slightly aggressive liquids
✓ Compatible gases
✓ Compatible process fluids
Maximum Media Viscosity: 50 cSt
The body and seal material should always be selected according to the chemical compatibility, concentration and operating temperature of the controlled media.
Temperature
Media Temperature: -5°C to +60°C
Ambient Temperature: -10°C to +40°C
Coil & Electrical
Coil Power: 4.5 Watt DC
Insulation: Class F 155°C
Duty Rating: 100% continuous
Protection: IP65 with connector
Connection: DIN 43650B
Connector: LED DIN connector included
Optional Coil: 30cm flying leads
The compact continuous-duty coil provides low electrical power consumption while maintaining direct-acting operation at zero pressure differential.
Voltage Options
12V DC
24V DC
48V DC
110V DC
The standard manufacturer electrical specification confirms 12V, 24V and 48V DC, with AC versions available as custom-made configurations.
Related Products & Categories
1/8" Stainless Steel Solenoid Valves
Plastic Solenoid Valves for Corrosive Chemicals
