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 flollowing periods of
inactivity. The 4 way valve can be used as either a 4 way 2 position
design or a 3 way nrmally 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.
Specifications
Solenoid Enclosures: Valves in this series have molded Ryton**
solenoids with ½" male conduit connection.
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Standard Enclosures:
Types 1, 2, 3, 3S, 4, and 4X combination General Purpose and Watertight.
Optional Enclosures:
Types 3, 3S, 4, 4X, 6, 6P, 7 and 9 Combination Explosionproof 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".
Electrical:
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 Explosionproof solenoids are constructed of
Class F materials. DIN coils and open frame leaded coils are continuous
duty Class F.
Nominal Ambient Temperature Ranges: 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 PSI for lower temperature requirements.
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Valve Parts in Contact with Fluids:
Core Tube -- 305 s.s.
Core and Plugnut -- 430F s.s.
Springs -- 302 s.s.
Seals -- Low freiction, 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
Standard Features:
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.
Approvals:
"QT" UL recognized component general purpose valve, CSA
certified. "EF" UL listed solenoid, CSA certified.
"U" and "SC" UL recognized component, CSA certified.
Ordering Information:
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 |
