ASCO Red-Hat 2-way valves have one inlet and one outlet pipe connection
and are used primarily to permit and shut off fluid flow.

Two Types of Operations Apply:

Normally Closed Fluid is shut off when the coil is de-energized, flows through the valve when the coil is energized.

Normally Open Fluid flow through the valve when the coil is de-energized, shuts off when the coil is energized.

Two Types of Constructions Apply:

Direct Acting When the solenoid is energized, the core directly opens the orifice of a Normally Closed valve or closes the orifice in a Normally Open valve. The valve will operate at pressures from 0 psi to its rated maximum. The force needed to open the valve is proportional to the orifice size and fluid pressure. As orifice size increases, so does the required force. To open larger orifices without increasing solenoid size, internal pilots are used.

Internally Piloted These valves use line pressure to assist operation. When the coil is de-energized (on a Normally Closed valve), the pilot orifice is closed and line pressure is applied to the top of the piston or diaphragm through the bleed orifice, closing the valve. When the coil is energized, the core opens the pilot orifice, relieving pressure from the diaphragm or piston. Line pressure, alone, opens the valve by lifting the diaphragm or piston off the main orifice.

Standard Optional Features:

Solenoid valves are supplied, as listed, with either Red-Hat II molded epoxy solenoids or Red-Hat solenoids with metal enclosures. Red-Hat II valves are identified by the letter "G" or "H" in their catalog numbers e.g., 8030G16. Many optional features may be added to your valves; e.g., high-temperature Class H molded coils, manual operators, and metering devices. See the Optional Features Section for details.

2 Way/2 Position Valve Flow Diagrams:

Normally Closed Valve De-Energized

Normally Closed Valve Energized

Normally Open Valve De-Energized

Normally Open Valve Energized

Index:

8030 Series - Low Pressure Solenoid Valves
Direct Acting - Brass or Stainless Steel Bodies - ³/₈" to ¾" N.P.T.

8040/8215 Series - Aluminum Body Solenoid Valves
Direct Acting and Pilot Operated - ³/₈" to 3" N.P.T.

8210 Series - General Service Solenoid Valves
Pilot Operated - Brass or Stainless Steel Bodies - ³/₈" to 2½" N.P.T.

8221 Series - Slow Closing Solenoid Valves
Pilot Operated - Brass Body - ³/₈" to 2½" N.P.T.

8223 Series - High Pressure Solenoid Valves
Pilot Operated - Brass or Stainless Steel Bodies - ¼" to ¾" N.P.T.

8225/8280 Series - Sub-Miniature Solenoid Valves
Direct Acting - Brass, Stainless Steel or Aluminum Bodies - ¹/₈" N.P.T.

8260 Series - Air and Water Solenoid Valves
Direct Acting - Plastic Body - ¼" Male Flare, Hose Bib or Compression Connections

8262/8263 Series - General Service Solenoid Valves
Direct Acting - Brass or Stainless Steel Bodies - ¹/₈" to ³/₈" N.P.T.

8290 Series - Angle Body Piston Valves
Auxiliary Piloted - Bronze or 316L Stainless Steel Bodies - ½" to 2" N.P.T.

8015/8025 Series - Manual Reset Solenoid Valves
Brass or Stainless Steel Bodies - ¾" to 2½" N.P.T.

Shielded Core Solenoid Valves
Corrosive Service - Plastic, Brass or Stainless Steel Bodies

CRYO/LCO₂ Series - Cryogenic Service and Liquid CO₂ Solenoid Valves
Brass Body - ¹/₈" to 1½" N.P.T.

Vacuum Valves Series - Low, Medium and High Vacuum Service
Brass or Aluminum Bodies - ¼" to 2" N.P.T.

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