Series 20 Model EH22

Hazardous Location High Pressure
2-Way Normally Closed Valve

When the valve coil is de-energized, the plunger moves upward and disengages the shoulder of the sealing pin allowing the return spring to hold the pin tightly on the orifice seat. When the coil is energized, the plunger accelerates freely before it makes contact with the sealing pin shoulder. Upon contact, it imparts considerable kinetic energy to the pin causing it to lift off the orifice seat against the force of high pressure. For use on air and other non-corrosive gasses, water and oil.

• Precision stainless steel, free floating plunger.
• Kel-F pin sealing element.
• Orifice guides the sealing pin for near perfect alignment.
• Simple construction...only two moving parts.
• Explosion proof construction.

  • SPECIFICATIONS
  • 2-D & 3-D CAD DRAWING
  • FLOW CHART
  • NOMENCLATURE

VALVE SPECIFICATIONS

GAS PRESSURE RATINGS ORIFICE SIZE CV FACTOR VALVE NUMBER
AC DC N.C.  N.C. 1/8 NPT PORTS 1/4 NPT PORTS
3000 3000 1/32 .022 EH22G7DCCM EH22G9DCCM
2500 1500 3/64 .041 EH22H7DCCMG EH22H9DCCMG
1750 500 1/16 .065 EH22J7DCCMG EH22J9DCCMG
650 100 3/32 .100 EH22K7DCCMG EH22K9DCCMG
LIQUID PRESSURE RATINGS ORIFICE SIZE CV FACTOR VALVE NUMBER
AC DC N.C. N.C. 1/8 NPT PORTS 1/4 NPT PORTS
3000 3000 1/32 .022 EH22G7DCCM EH22G9DCCM
1500 1500 3/64 .041 EH22H7DCCML EH22H9DCCML
1000 500 1/16 .065 EH22J7DCCML EH22J9DCCML
650 100 3/32 .100 EH22K7DCCML EH22K9DCCML

WHEN ORDERING VALVES OR REPAIR KITS ADD VOLTAGE AND FREQUENCY TO COMPLETE
VALVE NUMBER. EXAMPLES: VALVE (EH22J7DCCML-120/60) REPAIR KIT (2KEH22J-AC)

OPERATING CONDITIONS

Media: Air and other non-corrosive gasses, water and oil.
Filtration: Down to 60 microns or less is recommended.
Valve Temperature Range: Standard Valves – 0°F (-18°C) to 104°F (40°C) ambient; 0°F (-18°C) to 150°F (65°C) media. Optional Valves – can tolerate much higher or much lower ambient and media temperatures.*
Maximum Operating Pressure Differentials: See table above.
Burst Pressure: 5,000 PSI
Leakage: Bubbletight (with polymer sealing pins)

ELECTRICAL CHARACTERISTICS

Coil Voltage: 6 to 825V AC 60 HZ. and 5 to 720V AC 50 HZ.— 1.8 to 265V DC
Nominal Power: AC — 7.3 Watts DC — 9.5 Watts
Coil Construction: Molded Class F with third wire ground (Std.), Class H or Potted (Opt.)
Typical Response Time on Air: 4 - 16 Milliseconds
Operating Speed: Up to 600 CPM with gas media
Duty Cycle: Continuous

MECHANICAL CHARACTERISTICS

Body: Stainless Steel
Internal Components: Stainless Steel
Elastomers: Nitrile (Buna) (Std.). Many other elastomers available.*
Sealing Pin: Kel-F (Std.), Delrin®, Teflon®, Nylon, PEEK, Radel®, Ultem®, 303 Stainless Steel (Opt.)
Orifice Diameter: See table above.
Porting: 1/8" and 1/4" NPT (other ports available).
Housing: Flame-Proof Construction with 1/2" NPT conduit
Mounting: Must be mounted within 30° of vertical.
Listings: Valves are UL listed and CSA certified for Hazardous Locations — Class I, Div 1, Group C and D – Class II, Div 1, Group E, F, and G; Div 2 Groups A, B, C, D, E, F, and G.
Life Expectancy: Millions of cycles, depending on application, lubrication, etc.
Valve Weight: 1.50 lbs
Repair Kits: See table above.
Options: Alternate Sealing Pin Materials and Alternate Elastomers*

* Consult representative or factory for options and specifications.

Series 20 High Pressure Valves


MODEL EH22 1/4-18 NPT
2WNC
HIGH PRESSURE / EXPLOSION PROOF

MODEL EH22 1/8-27 NPT
2WNC
HIGH PRESSURE / EXPLOSION PROOF