Key Features
✓ 3/8" or 1/2" BSP Connections
✓ 2/2 Way Normally Open
✓ Fail-Open Valve Operation
✓ Energise to Close Operation
✓ Pressure-Assisted Operation
✓ 0.5 Bar Minimum Differential
✓ Working Pressure to 50 Bar
✓ Large 15mm Flow Orifice
✓ 64.35 L/min Water Flow
✓ Robust Brass Valve Body
✓ Stainless Steel Internals
✓ EPDM, NBR or FKM Seals
✓ 12W Coil to 40 Bar
✓ 18W Coil to 50 Bar
✓ AC & DC Voltage Options
✓ CE, UL & CSA Coil Approvals
✓ Class H Solenoid Operator
✓ 100% Continuous Duty Coil
✓ DIN43650A Electrical Connection
✓ IP68 Solenoid Coil
✓ IP67 LED Connector Included
✓ Optional NPT Thread
Datasheets
3/8 1/2 Brass solenoid valve 0.5-50 Bar 2/2 Normally Open
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Description
3/8" & 1/2" High Pressure Brass Solenoid Valve 0.5–50 Bar – CS Fluid Power NOHPV
The CS Fluid Power NOHPV is a high-pressure 2/2 way normally open brass solenoid valve designed for reliable fail-open control of air, water, light oils and compatible gases at working pressures up to 50 Bar.
Available with 3/8" or 1/2" BSP threaded connections, the NOHPV uses a pressure-assisted diaphragm design with a large 15mm orifice, providing approximately 64.35 L/min water flow at 1 Bar pressure differential.
The valve remains open without electrical power and closes when energised, making it particularly suitable for high-pressure systems where flow must be maintained during a power failure.
Two coil configurations are available: a 12W WPG1 operator for pressures up to 40 Bar and a higher-power 18W WPG2 operator for applications requiring pressures up to 50 Bar.
Valve Function & Operation
Function: 2/2 way normally open
Operation: Pressure assisted
Failsafe position: Open
Energised position: Closed
Minimum differential pressure: 0.5 Bar
The NOHPV is a normally open solenoid valve, meaning the valve remains open when electrically de-energised. Applying electrical power energises the solenoid operator and closes the valve.
When electrical power is removed or lost, the valve automatically returns to its normally open position.
This fail-open operating principle is particularly useful in industrial processes where continued flow is required during an electrical power failure.
The pressure-assisted design requires a minimum 0.5 Bar inlet-to-outlet pressure differential for correct operation.
Ports & Connections
Port sizes:
✓ 3/8" BSP
✓ 1/2" BSP
Optional connection:
✓ NPT thread
The choice of 3/8" and 1/2" connections allows the NOHPV to be used across a wide range of high-pressure pneumatic, water, gas and industrial process systems.
Pressure & Performance
Standard pressure range: 0.5 to 40 Bar
High-pressure option: 0.5 to 50 Bar
Minimum differential pressure: 0.5 Bar
Orifice size: 15mm
Flow rate: 64.35 L/min water @ 1 Bar ΔP
The large 15mm orifice provides substantially greater flow capacity than many small-orifice high-pressure solenoid valves.
For applications up to 40 Bar, the valve is fitted with the 12W WPG1 solenoid operator.
For applications requiring pressures up to 50 Bar, the higher-power 18W WPG2 operator is used.
High Flow 15mm Orifice
Orifice: 15mm
Flow rate: 64.35 L/min water @ 1 Bar pressure differential
The NOHPV combines high-pressure capability with a relatively large flow path, making it particularly useful where both pressure capability and useful flow capacity are required.
Its 15mm pressure-assisted diaphragm design provides approximately 64.35 L/min water flow at 1 Bar differential pressure while allowing working pressures up to 50 Bar.
Construction & Materials
Body: Brass
Internal components: Stainless steel
Seal options:
✓ EPDM
✓ NBR
✓ FKM (Viton)
The brass valve body provides a robust and economical solution for high-pressure air, water and compatible fluid applications, while stainless steel internal components provide strength and corrosion resistance.
Different seal materials can be selected according to the process fluid and operating temperature.
Always confirm chemical compatibility between the media, brass body, stainless steel internals and selected seal material before ordering.
Suitable Media
Depending upon the selected seal material, the NOHPV can be used with:
✓ Compressed air
✓ Water
✓ Neutral gases
✓ Light oils
✓ Compatible process fluids
Media compatibility depends upon the selected seal compound and complete valve materials.
For unusual gases, chemicals, fuels or process fluids, compatibility should be confirmed before ordering.
Coil & Electrical
Two solenoid operator options are available according to the required working pressure.
40 Bar Version:
Coil: WPG1
Power: 12W
Maximum pressure: 40 Bar
Coil protection: IP68
Overall protection: IP67 with LED connector
Connection: DIN43650A
Insulation: Class H
Duty cycle: 100% continuous
Approvals: CE, UL & CSA
50 Bar Version:
Coil: WPG2
Power: 18W
Maximum pressure: 50 Bar
Coil protection: IP68
Overall protection: IP67 with LED connector
Connection: DIN43650A
Insulation: Class H
Duty cycle: 100% continuous
Approvals: CE, UL & CSA
Both versions are supplied with an IP67 LED DIN connector for straightforward electrical installation.
Voltage Options
DC voltages:
✓ 12V DC
✓ 24V DC
✓ 48V DC
AC voltages:
✓ 24V AC
✓ 48V AC
✓ 110V AC
✓ 230V AC 50/60Hz
40 Bar & 50 Bar Options
The NOHPV can be configured according to the maximum operating pressure required.
40 Bar Version:
✓ 0.5 to 40 Bar
✓ 12W WPG1 coil
✓ 15mm orifice
✓ 64.35 L/min water flow
50 Bar Version:
✓ 0.5 to 50 Bar
✓ 18W WPG2 coil
✓ 15mm orifice
✓ 64.35 L/min water flow
Selecting the correct pressure version ensures the solenoid operator has sufficient magnetic force for reliable closing at the required system pressure.
Typical Applications
✓ High-pressure compressed air
✓ High-pressure water systems
✓ Industrial gas control
✓ Pressure testing equipment
✓ Pneumatic systems
✓ Water treatment equipment
✓ Light oil systems
✓ Process control equipment
✓ Industrial automation
✓ OEM machinery
✓ Fail-open process systems
✓ High-pressure fluid control
High Pressure Fail-Open Design
The CS Fluid Power NOHPV provides an unusual combination of normally open fail-safe operation, a large 15mm orifice and working pressures up to 50 Bar.
Unlike normally closed valves, the NOHPV remains open without electrical power and energises to close. This makes it particularly useful where the required safe condition during a power failure is continued fluid or gas flow.
Its pressure-assisted design provides significantly greater flow capacity than would normally be practical with a direct-acting high-pressure solenoid valve, while the choice of 40 Bar and 50 Bar coil configurations allows the valve to be matched to the required operating pressure.
Ordering Information
Select the required port size, thread, seal material, pressure range and voltage when ordering.
Available configurations include:
✓ 3/8" BSP
✓ 1/2" BSP
✓ Optional NPT thread
✓ 0.5–40 Bar version
✓ 0.5–50 Bar version
✓ EPDM seals
✓ NBR seals
✓ FKM (Viton) seals
✓ AC or DC voltages
For applications above 40 Bar, select the 50 Bar version with the higher-power 18W WPG2 operator.
For unusual fluids or gases, confirm material and seal compatibility before ordering.
Related Products & Categories
Technical Specification
Brand: CS Fluid Power Co Ltd
Model: NOHPV
Width: 52.00 mm
Height: 115.00 mm
Depth: 75.00 mm
Weight: 0.88 kg
Valve / Product Type: Solenoid Valve
Body Material: Brass
Voltage: 110vAC, 12vDC, 230VAC, 24vAC, 24vDC, 48vAC, 48vDC
Port Size: 1/2 thread, 3/8 thread
Function: 2/2 Failsafe Open
Operation: Pressure Assisted
Seals: EPDM, NBR, FKM (Viton)
Media: Air, Fluid (Non Aggressive), Gases (Non Aggressive), Oils + Fuels 50cSt Max, Water
Orifice: 15mm
Pressure: 10 Bar, 12 Bar, 13 Bar, 14 Bar, 15 Bar, 16 Bar, 17 Bar, 18 Bar, 20 Bar, 25 Bar, 30 Bar, 35 Bar, 40 Bar, 50 Bar
Approvals:: IP54, IP65, IP66, IP67, CSA, UL
Found in these Categories
- 3/8 Brass Solenoid Valves
- 1/2 Brass Solenoid Valves
- Air Solenoid Valves
- Water Solenoid Valves
- Light Oil Solenoid Valves
- 3/8 Inch Solenoid Valves
- 1/2 Inch Solenoid Valves
- 40 Bar Solenoid Valves
- 20 Bar Solenoid Valves
- 2/2 Normally Open Solenoid Valves
- 2/2 Normally Open - Pressure Assisted
- 3/8 High Pressure Solenoid Valves to 400 Bar
- 1/2 High Pressure Solenoid Valves to 400 Bar
- Brass 2/2 Normally Open - Pressure Assisted
- 50–600 Bar High Pressure Solenoid Valves
Reviews
★★★★★5.0 / 5 1 reviews
★★★★★
Verified Purchase
Good product, well solved the issue on board.
Reviewed on 02/10/2025 by Echo-Kilo L - Rochester, United Kingdom