Description
1" Brass High Vacuum Solenoid Valve – AD-25-V-G2-V
Normally Closed Zero-Rated Vacuum Solenoid Valve – Full Vacuum to 10 Bar
The CS Fluid Power AD-25-V-G2-V is a high-performance 1" brass vacuum solenoid valve designed for reliable control and isolation of industrial vacuum and compatible gas systems.
Using a 2/2 way normally closed, zero-rated assisted-lift design, the valve operates from high vacuum at -101 kPa (99.67% vacuum) through zero differential pressure and into positive pressure.
Featuring a large 25 mm orifice with Cv 13.2, the AD-25-V provides excellent flow capacity for industrial vacuum systems, packaging machinery, automation equipment and other applications requiring reliable vacuum isolation.
Valve Function & Operation
Function: 2/2 way normally closed
Operation: Assisted lift, zero rated
The valve remains closed when electrical power is removed. Energising the solenoid operator opens the valve and allows flow through the 25 mm orifice.
The zero-rated assisted-lift design enables operation without the minimum pressure differential normally required by conventional pilot-operated solenoid valves.
This allows the AD-25-V to operate reliably from high vacuum through zero differential pressure and into positive-pressure applications.
Ports & Connections
Port size: 1" BSPP
Optional:
✓ NPT thread
Orifice: 25 mm
The large internal flow path provides high flow capacity while retaining reliable high-vacuum operation.
Vacuum & Pressure Performance
Vacuum rating: -101 kPa
Equivalent vacuum:
757.56 mmHg relative
99.67% vacuum
Maximum AC pressure: 10 Bar
Maximum DC pressure: 7 Bar
Cv flow factor: 13.2
The combination of high-vacuum capability and positive-pressure operation makes the AD-25-V particularly versatile for industrial vacuum and automation systems.
Construction & Materials
Body: Brass
Tube and internal parts: Stainless steel
Seals and gaskets: FKM / Viton
Moulded coil: Resin
Maximum media temperature: +120°C
Ambient temperature: -20°C to +60°C
Mounting position: Coil upright
Opening / closing time: 50 ms maximum
Seal & Media Compatibility
Standard seals: FKM / Viton
Suitable for:
✓ Vacuum
✓ Air
✓ Compatible gases
FKM provides good resistance to many industrial gases and process fluids.
For specialist gases, aggressive media or oxygen applications, compatibility with the brass body, stainless steel internals and FKM seals should be confirmed before ordering.
Coil & Electrical
Standard coil: WPG2
Duty cycle: 100% continuous
DC power: 18 Watts
AC power:
18.7 VA inrush
15.3 VA holding
Insulation: Class H, 180°C
Protection: IP67 with connector
Electrical connection: DIN43650A
The standard WPG2 industrial coil provides reliable continuous-duty operation and is supplied with an IP67 LED DIN connector.
Voltage Options
DC:
✓ 12VDC
✓ 24VDC
✓ 48VDC
✓ 110VDC
AC 50/60Hz:
✓ 24VAC
✓ 48VAC
✓ 110VAC
✓ 240VAC
✓ 380VAC
Voltage tolerance: -10% / +10%
ATEX / IECEx Coil Option
An optional Nass Magnet explosion-protected solenoid operator is available for hazardous-area applications.
✓ Ex mb IIC T4 Gb
✓ Ex mb tb IIIC T130°C Db
✓ Zone 1 gas applications
✓ Zone 21 dust applications
✓ ATEX Category 2G / 2D
✓ Gas Group IIC
✓ Dust Group IIIC
✓ IP65 protection
✓ Maximum media temperature +80°C
✓ Maximum operating pressure 3 Bar
ATEX Certificate: PTB 03 ATEX 2086 X
IECEx Certificate: IECEx PTB 05.0005X
ATEX Directive: 2014/34/EU
When fitted with the ATEX / IECEx operator, the valve operating range is vacuum through to +3 Bar.
The ATEX / IECEx certification relates to the explosion-protected solenoid operator rather than certification of the complete brass valve assembly.
Optional Manual Override
A top-mounted lift-and-turn manual override is available, allowing the valve to be manually operated during commissioning, testing or maintenance.
Typical Applications
✓ Industrial vacuum systems
✓ Vacuum handling equipment
✓ Vacuum gripping systems
✓ Packaging machinery
✓ Laboratory vacuum systems
✓ Vacuum chambers
✓ Process automation
✓ OEM machinery
✓ Automated production equipment
✓ Compatible industrial gas systems
High-Flow Vacuum Control
The AD-25-V-G2-V combines a large 25 mm orifice with zero-rated assisted-lift operation, providing significantly greater flow capacity than smaller direct-acting vacuum solenoid valves.
Its ability to operate from -101 kPa high vacuum through zero differential pressure and into positive pressure makes it particularly suitable for industrial equipment where both vacuum performance and high flow capacity are required.
Ordering Information
AD-25-V-G2-V + Voltage
Specify:
✓ Required voltage
✓ BSPP or optional NPT thread
✓ Standard or ATEX/IECEx operator
✓ Manual override if required
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