| General Description | |||
These 3 way and 4 way pad mounted pilot valves are designed
to mount directly to most leading actuator configurations. The
valves are provided with thermoplastic bodies and stainless steel
hardware to create a corrosion resistant package ideal for your
diverse requirements. A momentary/maintained manual operator is
standard. Valves can be converted from AC to DC, or vice versa,
by simply changing the coil. The 3 way valve is a normally closed poppet design to insure tight shut-off. These valves are designed for use with spring return actuators. The 4 way valve is a 2 position design based upon the successful ASCO Slide Valve. This valve series requires no minimum differential pressure and only 20 psi mainline pressure to operate. The action of the slide on the flow plate wipes away dirt to avoid sticking following periods of inactivity. The 4 way valve can be used as either a 4 way 2 position design or a 3 way normally closed design merely by rotating a gasket located in the sub-base prior to assembly to the actuator. The 3-way operation routes the exhaust pressure to the spring side of the actuator to prevent corrosion problems within the actuator. |
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| Common Specifications | |||
| Solenoid Enclosures | Standard Enclosures | Standard Features | Electrical |
| Valves in this series have molded Ryton** solenoids with 1/2" male conduit connection. | Types 1, 2, 3, 3S, 4, and 4X combination General Purpose and Watertight. | 3/4 Way Valves Only :
Built in linear flow device capable
of controlling Cv from 0.10 to 0.50. 3 way/4 way selector gasket to provide " Breather Block" capability (protection from corrosive air). Mountable in any position. |
Standard Voltages: 24, 120, 240, 480 volts, AC, 60 Hz
(or 110, 220 volts, AC 50 Hz) 6, 12, 24, 120, 240 volts, DC. Other voltages available upon request. Coil: Watertight and Explosion proof solenoids are constructed of Class F materials. DIN coils and open frame leaded coils are continuous duty Class F. |
| Nominal Ambient Temperature Ranges | Valve Parts in Contact with Fluids | Approvals | Ordering Information |
| AC Construction: 0°F to 104°F. DC Construction: 0°F to 77°F. Note: For temperatures below 32°F moisture-free air must be used. Consult Leighton Stone Corporation for lower temperature requirements. |
Core Tube -- 305 s.s. Core and Plug nut -- 430F s.s. Springs -- 302 s.s. Seals -- Low friction, low wear NBR Interface Plate-- Molded Zytel* Nylon 3/4 Way Valves Only: Pressure Port -- 303 s.s. Main and Pilot Body -- Molded Zytel* Nylon Spool and Slide -- Molded graphite-filled PTFE Flow Plate -- Ceramic (Alumina) Worcester: Main body and Sub-Base -- Anodized aluminum |
"QT" UL recognized component general purpose valve, CSA certified."EF" UL listed solenoid, CSA certified. "U" and "SC" UL recognized component, CSA certified. | Important: We must have catalog number,
voltage and Hertz, operating pressure and
fluid handled. Use strainers with solenoid valves. * DuPont Co.trademark ** Phillips 66 Co. trademark |
| Optional Enclosures | |||
| Types 3, 3S, 4, 4X, 6, 6P, 7 and 9
Combination Explosion proof and Watertight.
To order, change "WT" prefix to "EF". Molded Epoxy coil per 3 x DIN 46244. To order, change "WT" prefix to "SC". Molded Epoxy open frame solenoid with 18" leads. To order, change "WT" prefix to "U". |
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Specifications (English Units) |
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| Standard Solenoid Combination General Puropse and Watertight |
Watt Rating/Class of Coil Insulation | Max Fluid Temp (°F) AC and DC |
Interface Type | Pipe Size (ins.) |
Orifice Size (ins.) |
CV Flow Factor |
Main Line Supply Pressure (psig) AC and DC |
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| Air-Inert Gas | ||||||||||||||
| Catalog Number | Const.Ref. | AC | DC | Min. | Max. | |||||||||
| 3 Way Normally Closed (Closed when de-energized) | ||||||||||||||
| WT8380B202 | 1 | 6.3/F | 6.9/F | 135 | Namur | 1/4 | 3/64 | 0.05 | 0 | 150 | ||||
| 3/4 Way Single Solenoid | ||||||||||||||
| WT8401B202M | 2 | 6.3/F | 6.9/F | 135 | Namur | 1/4 | 1/4 | 0.50 | 20 | 150 | ||||
| WT8401B204M | 2 | 6.3/F | 6.9/F | 135 | Keystone | 1/4 | 1/4 | 0.50 | 20 | 150 | ||||
| WT8401B200M | 3 | 6.3/F | 6.9/F | 135 | Worcester | 1/8 | 1/4 | 0.40 | 20 | 135 | ||||