The EH50 Series

Clark Cooper Valve EH50 Photo Clark Cooper Valve EH50 Section Rendering Clark Cooper Valve EH50 Rendering


The full port EH50 offers a wide range of solutions for your application needs, and is best used to control the flow of high pressure air, water, natural gas, hydrogen, nitrogen and other gases or light liquids compatible with materials of construction. This pilot operated valve is a great choice for differential pressures as high as 10,000 PSI. The valve comes in a ½” NPT connection size and requires a 100 PSIG minimum pressure differential between inlet and outlet for operation. The EH50 offers many of the benefits of our EH40, but with the available option of an integrated check valve. The EH50 is an ideal choice for CNG equipment and applications, whether your system utilizes a single-line buffer or a 3-bank cascade filling scheme. The valve also features a cartridge that can be easily removed for maintenance. The Normally Closed EH50 valves must be mounted upright and vertical, while the Normally Open EH50 valves are universal mount. Filters are recommended for all applications.

Possible Media: (click each icon to learn more)

Clark Cooper EH50 Valve General Gases and Liquids Yes
General Gases
and Liquids
Clark Cooper EH50 Valve Light Oils Yes
Clark Cooper EH50 Valve Flammable Gases Yes
Clark Cooper EH50 Valve Hydrogen Yes
Clark Cooper EH50 Valve Oxygen Yes
Clark Cooper EH50 Valve Corrosives No
Clark Cooper EH50 Valve Sea and Salt Water No
Sea & Salt
Clark Cooper EH50 Valve Viscous Liquids No
Clark Cooper EH50 Valve Steam Yes
Clark Cooper EH50 Valve Cryogenics Yes

Clark Cooper EH50 CRN Clark Cooper ATEX Coils
EH50 Product Manual
ATEX Approved Coils Now Available
video EH50-NC Assembly Video
video EH50-NO Assembly Video

How does this compare to other Clark Cooper Valves?

Download EH50 Catalog Page here

The EH50 Series


Valve Body: 7075-T6 Anodized Aluminum* / 316 SS
Piston: PEEK
O Ring (Standard): Buna-N (-50° to 225°F)
O Ring (Optional): Viton (0° to 400°F)
Backing Rings: Buna-N* / Viton / PTFE (cryo to 400°F)
Piston Rings / Seal: 302 SS / PTFE
Cartridge: 316 SS & 430 SS
Pilot / Seal: 303 SS / PTFE
Spring: 302 SS
Plunger: 430 SS
Bonnet Retainer: 430 SS
Cartridge Gasket: Nylon
Optional Check Valve: 304 SS / PEEK
*Standard material
Clark Cooper Valve EH50 Normally Closed Clark Cooper Valve EH50 Normally Open
  Inlet/Outlet Electrical Ship Weight (Aluminum Body) Ship Weight (316 SS Body) Reference Dimensions (inches)
EH50-08 Normally Closed ½" NPT ½" NPT Conduit 4.25 lbs. 9.75 lbs. 2.0 6.6 2.5 3.0 ø 3.00
EH50-08 Normally Open ½" NPT ½" NPT Conduit 4.50 lbs. 10.0 lbs. 2.0 7.3 2.5 3.0 ø 3.00

The EH50 Series

Electrical (Coil)

  Standard Higher Wattage
Power: 10 Watts 22 Watts
AC Inrush: 1 amp @120V AC 2.5 amp @120V AC
AC Holding: 0.1 amp @ 120V AC 0.2 amp @ 120V AC
Insulation: Class "F" Class "H"
Duty: Continuous Continuous
Connection: 1/2" NPT, 18" Leads 1/2" NPT, 18" Leads
Explosion Proof (Standard): NEMA 3, 3S, 4, 4X, 7, 9 NEMA 3, 3S, 4, 4X, 7, 9
General Service: NEMA 1, 2, 3, 3S, 4, 4X NEMA 1, 2, 3, 3S, 4, 4X


Maximum pressures shown are measured in PSIG:

  Normally Closed Normally Open
AC Voltage (Standard 10 W): 7,500 7,500
AC Voltage (Higher Wattage 22 W): 10,000 -
DC Voltage (Standard 10 W): 3,500 2,500
DC Voltage (Higher Wattage 22 W): 5,000 6,300
Minimum Pressure Differential: 100 100
Cv: 4.5 4.5

The EH50 Series

Possible EH50 Options:
Click each icon to learn more

Clark Cooper EH50 Valve Integrated Check Valve yes
Integrated Check Valve
Clark Cooper EH50 Valve 72 Lead Length yes
72" Lead Length
Clark Cooper EH50 Valve Din Connector yes
Din Connector
Clark Cooper EH50 Valve Screw Terminal yes
Screw Terminal
Clark Cooper EH50 Valve 1/4 Tab Spade yes
¼ Tab (spade)
Clark Cooper EH50 Valve General Service yes
General Service
Clark Cooper EH50 Valve Hydrogen Service yes
Hydrogen Service
Clark Cooper EH50 Valve Normally Open yes
Normally Open
Clark Cooper EH50 Valve Oxygen Clean yes
Oxygen Clean
Clark Cooper EH50 Valve Stainless Steel Valve Body yes
Stainless Steel Valve Body
Clark Cooper EH50 Valve Tube Connector yes
Tube Connector
Clark Cooper EH50 Valve Viton O-Rings yes
Viton O-Rings
Clark Cooper EH50 Valve Higher Pressure yes
22 W Coil
Clark Cooper EH50 Valve Universal Mount yes
Universal Mount
Normally Open ONLY
Clark Cooper EH50 Valve Class V Testing yes
Class V Leakage Testing
Clark Cooper EH50 Valve SAE Port yes
SAE Port
Clark Cooper EH50 Valve NEMA 4X yes
Clark Cooper EH50 Valve Stainless Steel Tags yes
Stainless Steel Tags

The following are standard on the EH50:

Clark Cooper EH50 Valve Explosion Proof yes
Explosion Proof

Options for our other valves include:

Clark Cooper EH50 Valve Cryogenic Testing no
Cryogenic Cleaning
Clark Cooper EH50 Valve ETL Listed no
ETL Listed
Clark Cooper EH50 Valve Single Switch no
Single Switch

The EH50 Series

Clark Cooper EH50 Valve Price Sheet
Download Price Sheet PDF here

Standard delivery time: 1 - 3 days
Additional options or alternate materials may cause longer delivery times. Delivery time is for less than 5 valves.