Description
DN15–DN50 Flanged Brass Solenoid Valve – CS Fluid Power ADF15-50
Normally Closed Zero-Rated PN16 Flanged Solenoid Valve – 0 to 10 Bar
The CS Fluid Power ADF15-50 is a heavy-duty flanged brass solenoid valve designed for reliable automatic control of air, water, vacuum, light oils and other compatible industrial fluids and gases.
Using a 2/2 way normally closed, zero-rated assisted-lift design, the valve operates from 0 Bar differential pressure, making it suitable for applications where conventional pilot-operated valves requiring a minimum pressure differential cannot be used.
Available from DN15 to DN50 with PN16 flanges as standard, the ADF Series provides large 15–51 mm internal orifices and high flow capacity. Maximum pressure is 10 Bar AC / 7 Bar DC through DN40, with the DN50 rated to 7 Bar AC / 5 Bar DC.
Valve Function & Operation
Function: 2/2 way normally closed
Operation: Assisted lift, zero rated
The ADF15-50 remains closed when electrical power is removed. Energising the solenoid operator lifts the valve mechanism and allows flow through the valve.
Its zero-rated assisted-lift design allows operation from 0 Bar differential pressure, combining the advantages of direct operation at low differential pressure with the larger flow capacity required for DN15 to DN50 pipelines.
Opening / closing time: 50 ms maximum
Mounting position: Coil upright
Ports & Flange Connections
Available flange sizes:
✓ DN15
✓ DN20
✓ DN25
✓ DN32
✓ DN40
✓ DN50
Standard flange: PN16
Optional flange standards:
✓ ANSI 150Lb RF
✓ JIS 10K
✓ Other flange options on request
Pressure & Flow Performance
DN15
Orifice: 15 mm
Water flow at 1 Bar ΔP: 64.4 L/min
Pressure AC: 0–10 Bar
Pressure DC: 0–7 Bar
DN20
Orifice: 20 mm
Water flow at 1 Bar ΔP: 133 L/min
Pressure AC: 0–10 Bar
Pressure DC: 0–7 Bar
DN25
Orifice: 25 mm
Water flow at 1 Bar ΔP: 188.8 L/min
Pressure AC: 0–10 Bar
Pressure DC: 0–7 Bar
DN32
Orifice: 35 mm
Water flow at 1 Bar ΔP: 371.8 L/min
Pressure AC: 0–10 Bar
Pressure DC: 0–7 Bar
DN40
Orifice: 35 mm
Water flow at 1 Bar ΔP: 400 L/min
Pressure AC: 0–10 Bar
Pressure DC: 0–7 Bar
DN50
Orifice: 51 mm
Water flow at 1 Bar ΔP: 686.4 L/min
Pressure AC: 0–7 Bar
Pressure DC: 0–5 Bar
Construction & Materials
Body: Forged brass
Tube and spring: 304 stainless steel
Armature: 430F stainless steel
Other internal parts: Brass
Moulded coil: Resin
The robust forged brass body and stainless steel operating components provide reliable service across a wide range of general industrial fluid-control applications.
Seal Options & Media Compatibility
Standard seal: NBR
Optional seals include:
✓ FKM / Viton
✓ EPDM
✓ Silicone
✓ PTFE
✓ VST
✓ Neoprene
✓ ECO
✓ HNBR
✓ Hypalon
✓ Butyl IIR
Seal selection allows the valve to be configured for different temperatures and compatible process media.
Typical applications can include:
✓ Compressed air
✓ Water
✓ Vacuum
✓ Light oils
✓ Inert gases
✓ Nitrogen
✓ Carbon dioxide
✓ Argon
✓ Glycol and antifreeze
✓ Compatible fuels and hydrocarbons
For LPG, petrol, diesel, propane, oxygen, fuel oils or other specialist media, the correct seal configuration and material compatibility should be confirmed before ordering.
Maximum media viscosity: 50 cSt
Temperature
Maximum media temperature depends upon the selected seal material.
NBR: up to +100°C
FKM / EPDM / Silicone: up to +120°C
Ambient temperature: -20°C to +60°C
Coil & Electrical
Standard coil: WPG2
DC power: 18 Watts
AC power:
18.7 VA inrush
15.3 VA holding
Duty cycle: 100% continuous
Insulation: Class H, 180°C
Coil protection: IP68
Overall protection with connector: IP67
Electrical connection: DIN43650A
The WPG2 coil is UL and CSA approved and is supplied with an IP67 LED DIN connector.
Voltage Options
DC:
✓ 12VDC
✓ 24VDC
✓ 48VDC
AC 50/60Hz:
✓ 24VAC
✓ 48VAC
✓ 110VAC
✓ 230VAC
✓ 380VAC
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, maximum operating pressure is reduced to 3 Bar.
The explosion-protected certification relates to the solenoid operator rather than automatically certifying the complete brass valve assembly.
Additional Options
✓ Manual override
✓ Top lift-and-turn override
✓ Bottom-entry T-bar override
✓ Degreased configuration
✓ Alternative seal materials
✓ ANSI150Lb flange
✓ JIS10K flange
✓ Custom-made configurations
Typical Applications
✓ Industrial water systems
✓ Compressed air systems
✓ Vacuum systems
✓ Process automation
✓ Cooling water systems
✓ Industrial machinery
✓ Inert gas systems
✓ Oil and fuel handling
✓ Glycol and antifreeze systems
✓ OEM process equipment
Zero-Rated Flanged Flow Control
The ADF15-50 combines the convenience of a flanged industrial valve with zero-rated assisted-lift solenoid operation.
Unlike conventional pilot-operated valves that require a minimum pressure differential to open, the ADF Series operates from 0 Bar, making it particularly useful for low-pressure systems, gravity-fed applications and installations where differential pressure may fall close to zero.
With sizes from DN15 to DN50, flow capacities up to 686.4 L/min at 1 Bar pressure drop and several flange and seal configurations, the series provides a versatile solution for larger industrial pipelines.
Ordering Information
Specify:
✓ Required DN size
✓ Required voltage
✓ PN16, ANSI150Lb or JIS10K
✓ Required seal material
✓ Standard or ATEX/IECEx operator
✓ Manual override if required
✓ Degreasing if required
Standard manufacturer model references are AD15PF, AD20PF, AD25PF, AD35PF, AD40PF and AD50PF, followed by the required seal and voltage specification.
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