Description
3/4" Zero Pressure Stainless Solenoid Valve – CS ADS20
CS Fluid Power 316 Stainless Assisted-Lift Solenoid Valve
The CS Fluid Power ADS20 is a high-flow 3/4" assisted-lift (Magnalift) 2/2 way normally closed 316 stainless steel solenoid valve designed for vacuum, zero-pressure and general industrial fluid control applications.
Unlike conventional pilot-operated valves, the assisted-lift design requires no minimum pressure differential, allowing operation from 0 Bar while retaining a large 20mm orifice and high Kv flow capacity of 133 L/min.
Suitable for air, water, light oils, vacuum, RO and demineralised water, mildly acidic or alkaline media and compatible fluids and gases, the ADS20 combines a corrosion-resistant 316 stainless steel body, stainless steel internals and a serviceable diaphragm design for reliable continuous-duty operation.
Typical Applications
High-flow water control
RO and demineralised water systems
Pure water systems
Vacuum and low differential pressure systems
Process fluid control
Industrial washing equipment
Chemical dosing systems
Compressed air and inert gas systems
OEM machinery and process engineering installations
Laboratory and instrumentation systems
Technical Specification
Function: 2/2 way normally closed
Valve State: De-energised CLOSED / energised OPEN
Operation: Assisted-lift (Magnalift) diaphragm
Minimum Pressure Differential: 0 Bar
AC Operating Pressure: 0 to 10 Bar
DC Operating Pressure: 0 to 7 Bar
Vacuum Rating: 10⁻⁶ Torr
Port Size: 3/4" BSPP female
Optional Threads: NPT or Rc
Orifice Size: 20.0mm
Kv Flow Factor: 133 L/min
Based on water with 1 Bar pressure drop.
Maximum Media Viscosity: 50 cSt
Body Material: 316 stainless steel
Internal Components: Stainless steel
Standard Seal: FKM (Viton®)
Optional Seals: EPDM, NBR, Silicone, PTFE, VST, Neoprene, ECO, HNBR or Hypalon
Shading Ring: Copper
Optional Shading Ring: Silver
Manual Override: Optional
Installation: Coil upright recommended
Media Compatibility
Suitable for:
Air and inert gases
Water
RO water
Demineralised water
Pure water
Light oils
Vacuum applications
Mild acids and alkalis
Nitrogen
Carbon dioxide
Argon
Antifreeze and glycol solutions
Kerosene
Compatible fluids and gases up to 50 cSt
Oxygen service when specifically ordered in degreased configuration
For specialist fluids, compatibility should be checked against the stainless steel body and selected seal material.
Temperature Limits
FKM (Viton®): -10°C to +120°C
EPDM: -10°C to +120°C
NBR: -10°C to +100°C
General Maximum Media Temperature: +120°C
Ambient Temperature: -10°C to +60°C
Other seal materials are available subject to application requirements.
Coil & Electrical
Standard Coil: WPG2
Power Consumption: 18 Watts DC
Connector: DIN 43650A
Coil Protection: IP68
Overall Protection: IP67 with connector fitted
Insulation Class: Class H
Duty Rating: 100% continuous duty
Approvals: CE, UL & CSA
LED DIN connector included.
Voltage Options
DC: 12V, 24V or 48V
AC: 24V, 48V, 110V, 230V or 380V (50/60Hz)
Voltage Tolerance: ±10%
Manual Override Option
Optional manual override versions are available for applications requiring manual valve operation during commissioning, testing or loss of electrical control.
ATEX / IECEx Coil Option
Optional Nass Magnet explosion-protected solenoid operator available.
✓ Ex mb IIC T4 Gb
✓ Ex mb tb IIIC T130°C Db
✓ Suitable for Zone 1 gas and Zone 21 dust hazardous areas
✓ ATEX Category 2G / 2D
✓ Protection rating: IP65
✓ Maximum media temperature: +80°C
✓ ATEX Certificate: PTB 03 ATEX 2086 X
✓ IECEx Certificate: IECEx PTB 05.0005X
✓ ATEX Directive: 2014/34/EU
Maximum operating pressure with ATEX operator: 0–3 Bar
Oxygen Service Option
A specially degreased version is available for oxygen service.
All oil and grease contamination is removed during the cleaning process. Seal selection and operating conditions must be specified when ordering for oxygen applications.
Benefits
✓ Operates from zero pressure
✓ Vacuum compatible to 10⁻⁶ Torr
✓ High-flow 20mm orifice
✓ Kv 133 L/min flow capacity
✓ Corrosion-resistant 316 stainless steel construction
✓ Suitable for RO and demineralised water systems
✓ Suitable for mildly acidic and alkaline media
✓ Wide choice of sealing materials
✓ Optional manual override
✓ Optional silver shading ring
✓ Optional ATEX / IECEx operator
✓ Oxygen-service option available
✓ Serviceable diaphragm construction
✓ Reliable continuous-duty operation
✓ Free UK delivery available
Why Choose the ADS Assisted-Lift Valve?
The ADS20 combines the zero-pressure capability of an assisted-lift solenoid valve with the corrosion resistance of 316 stainless steel construction.
Its Magnalift design allows reliable operation from 0 Bar differential pressure, including vacuum applications, while the large 20mm orifice provides a high Kv flow factor of 133 L/min.
Compared with a conventional pilot-operated solenoid valve, the ADS20 is particularly useful where inlet pressure can fall to zero or where the pressure differential across the valve is insufficient to operate a standard pressure-assisted diaphragm valve.
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