EH40-08 – 1/2" NPT Full Port (Normally Closed)

Clark Cooper New EH40-08 Valve


Our new EH40-08 is a versatile, ½” full port, high pressure, pilot operated, solenoid valve.  Its improvements over our current EH50 include a more compact size, for where space is limited, and a higher pressure range with direct current (DC) power.  The compact EH40-08 is ideal for flow control of high pressure air, water, compressed natural gas (CNG), hydrogen, nitrogen, and other gases or light liquids compatible with the materials of construction, and leverages this high pressure flow to its own advantage in operating effectively and efficiently.


Our new compact EH40-08 style valve is perfect for use in hydrogen dispensing tanks, commonly used in the refueling of fleet vehicles. It is also a used in many compressed natural gas applications. With available pressures to 10,000 psig there are a wide range of applications that include water, nitrogen and many other compatible liquids.  This solenoid valve must be mounted with the solenoid upright and vertical.

How does this compare to other Clark Cooper Valves?


Valve Body: 316 SS
Pistons: PEEK
O Rings: Buna-N / Viton / PTFE
Backing Rings: Buna-N / Viton / PTFE
Piston Rings / Seal: PTFE / 302 SS
Cartridge: 316 SS / 430 SS
Pilot / Seal: 303 SS / PTFE
Spring: 302 SS
Plunger: 430 SS
Bonnet Retainer: 430 SS
Cartridge Gasket: Nylon
Fluid Temperature Range  
  Buna (standard): -35° to 250° F
  Viton (optional): -15° to 400° F
Shipping Weight: 7 lbs.
Cv: 4.5
Clark Cooper EH40-08 Valve Drawing

Electrical (Coil)

  (STD) (XP)
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)
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 Operating Pressure:  
AC Voltage (STD): 7,500 PSIG
AC Voltage (XP): 10,000 PSIG
DC Voltage (STD): 3,600 PSIG
DC Voltage (XP): 7,200 PSIG
Minimum Pressure: 100 PSIG

Model #: EH40-08-XXXX- **

XXXX = Solenoid Voltage

A024 - 24V AC D012 - 12V DC
A120 - 120V AC D024 - 24V DC
A240 - 240V AC D120 - 120V DC

** = Options

GS General Service Coil
HY Hydrogen Service (Helium Leak Test)
OX Oxygen Clean
VT Viton O-Rings
XP Higher Pressure 22 Watt Coil
(see Pressure chart above)