The EH40 Series

Clark Cooper Valve EH40 Photo Clark Cooper Valve EH40 Section Rendering Clark Cooper Valve EH40 Rendering


The EH40 is a 2-way, unidirectional, full port solenoid valve that is great for a wide range of fluids and gases. This pilot operated valve can be used to control the flow of media such as high pressure air, water, natural gas, hydrogen, nitrogen, and other gases or light liquids compatible with materials of construction. Available in both 1/4" (EH40-04) and 1/2" (EH40-08) sizes, the EH40 is the workhorse of our collection and offers a cartridge design that alleviates your demanding maintenance requirements. The EH40 requires 50 PSIG minimum pressure differential between inlet and outlet for operation. The design is optimal for pressures of 50 to 10,000 PSIG. The Normally Closed DC Powered EH40 valves must be mounted upright and vertical, while all other EH40 valves are universal mount. Filters are recommended for all applications.

Possible Media: (click each icon to learn more)

Clark Cooper EH40 Valve General Gases and Liquids Yes
General Gases
& Light Liquids
Clark Cooper EH40 Valve Light Oils Yes
Clark Cooper EH40 Valve Flammable Gases Yes
Clark Cooper EH40 Valve Hydrogen Yes
Clark Cooper EH40 Valve Oxygen Yes
Clark Cooper EH40 Valve Corrosives No
Clark Cooper EH40 Valve Sea and Salt Water No
Sea & Salt
Clark Cooper EH40 Valve Viscous Liquids No
Clark Cooper EH40 Valve Steam Yes
Clark Cooper EH40 Valve Cryogenics Yes

The EH40 has the following certification:
Clark Cooper EH40 CRN Clark Cooper ATEX Coils
EH40 Product Manual
ATEX Approved Coils Now Available
EH40 Install video See EH40 Assembly Video

How does this compare to other Clark Cooper Valves?

Download EH40 Catalog Page here

California Proposition 65 Warning

The EH40 Series


Valve Body: 316 SS
Piston: PEEK®
O Ring (Standard): Buna-N (-50° to 225°F)
O Ring (Optional): Viton (0° to 400°F)
Piston Rings: (EH40-04) 302 SS / PTFE
Piston Rings: (EH40-08) 302 SS / Buna
Cartridge: 316 SS & 430 SS
Pilot / Seal: 303 SS / PTFE
Spring: 302 SS
Plunger: 430 SS
Bonnet Retainer: 430 SS
*Viton Piston rings are option and available by request.
*Consult Sales for Fluid Temps exceeding 300°F
and corresponding derated max allowable inlet pressure.
Clark Cooper Valve EH40 Normally Closed Clark Cooper Valve EH40 Normally Open

  Standard Inlet/Outlet Electrical Ship Weight (lbs.) Reference Dimensions (inches)
EH40-04 Normally Closed ¼" NPT ½" NPT Conduit 2.85 2.0 4.1 2.1 0.9 ø 2.20
EH40-04 Normally Open ¼" NPT ½" NPT Conduit 3.10 2.0 4.8 2.1 0.9 ø 2.20
EH40-08 Normally Closed ½" NPT ½" NPT Conduit 6.05 2.0 4.7 2.2 1.3 ø 2.95
EH40-08 Normally Open ½" NPT ½" NPT Conduit 6.04 2.0 5.4 2.2 1.3 ø 2.95

The EH40 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
18" Leads & 1/2" NPT Standard; 3000mm cable for ATEX only
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

  Pipe Size
1/4" 1/2"
Normally Closed AC Voltage (Standard): 7,500 7,500
Normally Closed AC Voltage (Higher Wattage): 10,000 10,000
Normally Closed DC Voltage (Standard): 3,500 3,600
Normally Closed DC Voltage (Higher Wattage): 10,000 7,200
Normally Open AC Voltage: 5,500 6,500
Normally Open DC Voltage (Higher Wattage **): 5,500 6,200
Minimum Required Pressure Differential: 50 50
Cv: 1.1 4.5
* Standard Sealing is Class 2, Per ANSI/FCI 92-2-2001
** "XP" option (22 watt coil) required for normally open with DC voltage
** For Oils and Hydraulic Fluids with viscosities greater than water, the maximum differential pressure is the value in the table divided by 2.
(Consult Sales for maximum allowable inlet pressures for fluids exceeding 300°F)

The EH40 Series

Possible EH40 Options:
Click each icon to learn more

Clark Cooper EH40 Valve 72 Lead Length yes
72" Lead Length
Clark Cooper EH40 Valve Din Connector yes
Din Connector
Clark Cooper EH40 Valve Screw Terminal yes
Screw Terminal
Clark Cooper EH40 Valve 1/4 Spade tab yes
¼ Tab (spade)
Clark Cooper EH40 Valve General Service yes
General Service Coil
Clark Cooper EH40 Valve Hydrogen Service yes
Hydrogen Service
Clark Cooper EH40 Valve Normally Open yes
Normally Open
Clark Cooper EH40 Valve Oxygen Clean yes
Oxygen Clean
Clark Cooper EH40 Valve SAE Port yes
SAE Port
Clark Cooper EH40 Valve Tube Connector yes
Tube Connector
Clark Cooper EH40 Valve Universal Mount yes
Universal Mount
Clark Cooper EH40 Valve Class V Testing yes
Class V Leakage Testing
Clark Cooper EH40 Valve NEMA 4X yes
Clark Cooper EH40 Valve Viton O-Rings yes
Viton O-Rings
Clark Cooper EH40 Valve Higher Pressure yes
22 W Coil
Clark Cooper EH40 Valve ATEX Certified yes

The following are standard on the EH40:

Clark Cooper EH40 Valve Explosion Proof yes
Explosion Proof
Clark Cooper EH40 Valve Stainless Steel Valve Body yes
Stainless Steel Valve Body

Options for our other valves include:

Clark Cooper EH40 Valve Cryogenic Testing no
Cryogenic Cleaning
Clark Cooper EH40 Valve ETL Listed no
ETL Listed
Clark Cooper EH40 Valve Integrated Check Valve no
Integrated Check Valve
Clark Cooper EH40 Valve Single Switch no
Single Switch

The EH40 Series

Clark Cooper Valve EH40 Price Sheet
Download Model Breakdown 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.