Valworx 587127 explosion proof soft seated butterfly valve is used in environments where flammable gases may be present. Lug style valve sandwich mounts between customer supplied standard ANSI/ASME Class 125/ 150 or other international standard flanges. The EPS- Electronic Positioning System provides an accurate valve positioning function whereby the movement of the actuator is controlled by a 4-20mA input control signal. Any change in the control input signal results in a corresponding and proportional change in the position of the disc. The internal microprocessor and closed loop feedback system continuously monitors and maintains accurate valve position. The valve will remain in the last known position with loss of electric power. EPS positioning module is self-calibrating and fully potted to help protect the electronics against vibration and moisture. Valve position can be monitored with the onboard analog output signal.
The valve is direct mounted to the actuator using the international standard ISO5211 mounting pad. Rugged unique integral motor/housing design provides higher torque in a very small package. Special wave line seat and disc shape, reduces the required torque and extends the life of the valve. Precision machined 316SS disc with two-piece stem (shaft) construction, enhances the flow capacity of the valve and reduces turbulence. The stem utilizes PTFE/graphite bearings with V-ring seals preventing leakage.
Explosion proof actuator certified for UL Class I Div I as well as ATEX specifications.
Butterfly Valve Standard Features
Rugged ductile iron body with epoxy coatingPrecision machined 316 Stainless Steel discUnique wave line seat design reduces the torque and extends the seal lifePTFE/graphite stem bearings with V-ring sealsTwo piece stem/disc construction enhances flow and reduces turbulenceStandard ISO5211 actuator to valve direct mountingLeak proof flange seals included as part of valve seat
Electric Actuator Standard FeaturesExplosion proof rated for UL Class I Div I Groups C & D, Ex db IIC T5 Gb Class 1 Zone 1, AEx db IIC T5 GbEPS-Positioner controlled by a 4-20mA inputRugged Type 4X weatherproof aluminum alloy housingVisual valve position indicatorManual overrideHeavy duty motor with overload protectionAnalog output signal to confirm valve positionSelf-locking all metal gear drive, no additional brake requiredCSA Listed per UL429 and CSA C22.2, CE mark as well as ExP ratings listed above
| Type | Explosion Proof Electric Actuated Lugged Butterfly Valve- Positioner |
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| Voltage | 24VDC |
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| Current Rating | 3.12 @ 24VDC (full load amps) |
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| Cycle Time | 30 seconds per 90° rotation (no load) |
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| Pipe Size | 6 inch (DN50) |
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| Suitable Flanges | Mounts between ANSI /ASME B16.5 Class 150, B16.1 Class 121, EN1092 PN10, PN16, BS10 D, E, JIS B2239 10K, 16K |
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| Flow Factor | Cv 2243 (Cv = number of GPM of 60 °F water at 1 psi pressure drop) |
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| Pressure Rating | 232 PSI (16 Bar), 29 inHg vacuum |
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| Valve Temperature Range | 0 to 248 °F (-30 to +120 °C) |
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| Actuator Temperature Range | -13 to +131 °F (-25 to +55 °C) |
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| Valve Body | Ductile iron, epoxy coating (seat facing acts as flange gasket) |
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| Disc | 316 stainless steel |
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| Disc Seat/Liner | EPDM |
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| Shaft Seals | EPDM V-ring |
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| Duty Cycle | 70% |
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| Enclosure | Aluminum alloy, polyester painted, SS fasteners |
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| Enclosure Rating | Type 4X (IP67) weatherproof |
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| Electrical Connections | Two 1/2" NPT threaded ports. Requires Exp rated connector or pipe (not included). |
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| Valve Position Confirmation | 4-20mA output monitoring signal (same type as input signal) |
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| Manual Override | 5mm hex drive with protective cover |
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| Motor Protection | Thermal overload |
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| Anti-Condensation Heater | 4 watts thermostatically controlled |
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| Approvals | UL Class I Div I Groups C & D, Ex db IIC T5 Gb Class 1 Zone 1, AEx db IIC T5 Gb |
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Explosion Proof NPT Plug
Price: $22.94
Buy 3 or more for $20.65 each
