Description
3/8" Zero Pressure Brass Solenoid Valve – CS AD14
CS Fluid Power Assisted-Lift Normally Closed Solenoid Valve
The CS Fluid Power AD14 is a high-flow 3/8" assisted-lift (Magnalift) 2/2 way normally closed brass 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 15mm orifice and high flow capacity.
Suitable for air, water, light oils, vacuum and compatible fluids and gases, the AD14 combines a forged brass body, stainless steel internals and a serviceable diaphragm design for reliable continuous-duty operation.
Key Features
✓ Zero-pressure operation from 0 Bar
✓ No minimum pressure differential
✓ 2/2 way normally closed operation
✓ De-energised CLOSED / energised OPEN
✓ Assisted-lift diaphragm design
✓ Vacuum rated to 10⁻⁶ Torr
✓ 0–10 Bar with AC coil
✓ 0–7 Bar with DC coil
✓ Fast 50ms maximum response time
✓ High-flow 15mm orifice
✓ Kv 64.4 L/min flow capacity
✓ Forged brass body
✓ Stainless steel internal components
✓ NBR seal rated to +100°C
✓ EPDM or FKM seals to +120°C
✓ Maximum viscosity 50 cSt
✓ Optional manual override
✓ IP67 coil and LED connector assembly
✓ Class H 180°C coil insulation
✓ 100% continuous duty rated
✓ Optional ATEX / IECEx operator
✓ Optional oxygen degreased version
✓ Replacement diaphragm kits available
✓ Free UK delivery available
Typical Applications
Compressed air systems
Water and fluid handling
Vacuum systems
Low-pressure applications
Light oil systems
Fuel handling systems
Industrial gases
Process engineering
OEM machinery
Test equipment
General industrial automation
Technical Specification
Function: 2/2 way normally closed
Valve State: De-energised CLOSED / Energised OPEN
Operation: Assisted-lift 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
Opening / Closing Time: 50 milliseconds maximum
Port Size: 3/8" BSPP female
Optional Threads: NPT or Rc
Orifice Size: 15.0mm
Kv Flow Factor: 64.4 L/min based on water with 1 Bar pressure drop
Maximum Media Viscosity: 50 cSt
Body Material: Forged brass
Tube and Internal Components: Stainless steel
Standard Seal: NBR
Optional Seals: EPDM, FKM, Silicone, FFKM, HNBR, Hypalon, VST, Neoprene or ECO
Mounting Position: Coil upright
Media Compatibility
Suitable for:
Air and inert gases
Water
Light oils
Vacuum
Compatible fuels and fuel oils
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
Seal selection must always be checked against the particular fluid, concentration and operating temperature.
Temperature Limits
NBR: Up to +100°C
FKM: Up to +120°C
EPDM: Up to +120°C
Ambient Temperature: -20°C to +60°C
Coil & Electrical Specification
Coil: WPG2
Power Consumption DC: 18 Watts
AC Inrush: 18.7 VA
AC Holding: 15.3 VA
Insulation Class: Class H 180°C
Duty Rating: 100% continuous duty
Protection: IP67 with connector fitted
Electrical Connection: 3 spades
Connector: DIN 43650A
Voltage Tolerance: ±10%
Voltage Options
DC:
12VDC, 24VDC, 48VDC or 110VDC
AC 50/60Hz:
24VAC, 48VAC, 110VAC, 240VAC or 380VAC
Manual Override Option
Optional manual override versions are available.
✓ Top-mounted lift-and-turn knob (-M/O)
✓ Bottom-entry T-bar override (-MO)
These two manual override arrangements are specifically listed by the manufacturer.
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: 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.
Repair & Service Parts
The AD series is designed to be serviceable.
Replacement diaphragm kit: SP215 + valve part number
Replacement coil: WPG2 + voltage
Why Choose the AD Assisted-Lift Valve?
The AD14 combines the advantages of a direct-acting valve with the higher flow capacity normally associated with pilot-operated designs.
Its assisted-lift construction allows operation from 0 Bar differential pressure, including vacuum applications, while providing a large 15mm orifice, Kv 64.4 L/min flow capacity and a fast 50ms maximum opening/closing time.
This makes it particularly useful for vacuum, gravity-fed, low-pressure and variable-pressure systems where a conventional pilot-operated solenoid valve may fail to operate reliably.
Benefits
✓ Operates from zero pressure
✓ Vacuum compatible to 10⁻⁶ Torr
✓ 50ms maximum response
✓ Large 15mm flow orifice
✓ Kv 64.4 L/min
✓ Up to 10 Bar AC operation
✓ Wide choice of sealing materials
✓ Optional manual override
✓ Optional ATEX / IECEx operator
✓ Oxygen-service option available
✓ Fully serviceable construction
✓ Free UK delivery available
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