Series WE20 Butterfly Valve

Lug or Wafer, EPDM or PTFE, Electric or Pneumatic Actuators

The Series WE20 is offered in lug or wafer body styles and is equipped with a PTFE or EPDM liner. The most critical aspect of the Series WE20 Butterfly Valves is the cartridge seat design, which alleviates installation problems associated with common "dove tail design" seats. Valve torques are lower and more consistent as the seat dynamics are not dependent on being coupled between two flanges. Precision machining of the disc and body allow the cartridge design to maintain a tighter disc to seat tolerance, providing a perfect low torque seal each and every time the valve is cycled. The seat to disc seal is independent of flange support and capable of full rated dead end service. Actuators are directly mounted creating a compact assembly for tight spaces. Limit switches are able to be mounted directly to the valves allowing for remote position indication. The Series WE20 can be configured with either an electric or pneumatic actuator. Electric actuators are available in weatherproof or explosion-proof, a variety of supply voltages and two-position or modulating control. Two-position actuators use the supply voltage to drive the valve open or closed, while the modulating actuator accepts a 4-20 mA input for valve positioning. Actuators feature thermal overload protection and permanently lubricated gear train. The pneumatic double acting actuator uses an air supply to drive the valve open and closed. The actuator has two supply ports, with one driving the valve open and the other driving the valve closed. Spring return pneumatic actuators use the air supply to open the valve, and internally loaded springs return the valve to the closed position.

The pneumatic double acting actuator uses an air supply to drive the valve open and closed. The actuator has two supply ports with one driving the valve open and the other driving the valve closed. Spring return pneumatic actuators use the air supply to open the valve and internally loaded springs return the valve to the closed position. Also available is the SV3 solenoid valve to electrically switch the air supply pressure between the air supply ports for opening and closing the valve. Actuators are constructed of anodized and epoxy coated aluminum for years of corrosion free service.

Models & Ordering

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Specifications

SPECIFICATIONS VALVE
Service:
Compatible liquids, gases, and steam.
Body:
2-way, wafer or lug butterfly.
Line Sizes:
2 to 12".
End Connections:
Lug and wafer pattern designed for flanges that are ANSI Class 125 (B16.1) and ANSI Class 150 (B16.5) dimension.
Pressure Limits:
225 psi (15.5 bar).
Wetted Materials:
Body Material: Ductile iron; Disc: 316 SS; Seat: EPDM or PTFE; O-ring: EPDM; Stem: 410 SS.
Temperature Limits:
Disc: EPDM: -50 to 250°F (-46 to 121°C); PTFE: 0 to 300°F (-18 to 149°C).
Bearings:
Nylatron.
Operator:
2 to 6" 10-position locking hand lever; 8 to 12": manual gear.

ACTUATORS
Pneumatic “DA” and “SR” Series Type:
DA series is double acting and SR series is spring return (rack and pinion).
Normal Supply Pressure:
DA: 40 to 115 psi (2.7 to 7.9 bar); SR: 70 to 115 psi (4.8 to 7.9 bar).
Maximum Supply Pressure:
120 psi (8.6 bar).
Air Connections:
DA03 thru DA11: 1/4" FNPT; SA03 thru SR11: 1/4" FNPT.
Housing Material:
Anodized aluminum body and epoxy coated aluminum end caps.
Temperature Limits:
-40 to 176°F (-40 to 80°C).
Accessory Mounting:
NAMUR standard.

Electric "TD" and "MD" Series
Power Requirements:
110 VAC, 220 VAC or 24 VAC.
Power Consumption:
See instruction manual.
Cycle Time (per 90°):
TD01 and MD01: 4 s; TD02 and MD02: 20 s; TD03 and MD03: 30 s; TD04 and MD04: 30 s; TD05 and MD05: 30 s; TD06 and MD06: 45 s; TD07 and MD07: 30 s.
Duty Rating:
85%.
Enclosure Rating:
NEMA 4X (IP67).
Housing Material:
Powder coated aluminum.
Temperature Limits:
-22 to 140°F (-30 to 60°C).
Electrical Connection:
1/2" female NPT.
Modulating Input:
4 to 20 mA.
Standard Features:
Manual override, position indicator, and TD models come with two limit switches.

Electric "TH" and "MH" Series
Power Requirements:
110 VAC, 220 VAC, 24 VAC or 24 VDC.
Power Consumption:
See instruction manual.
Cycle Time (per 90°):
See instruction manual.
Duty Rating:
See instruction manual.
Enclosure Rating:
NEMA 7, designed to meet hazardous locations: Class I, Group C & D; Class II, Group E, F & G; Division I & II.
Housing Material:
Powder Coated Aluminum.
Temperature Limits:
-22 to 140°F (-30 to 60°C).
Electrical Connection:
1/2" female NPT.
Modulating Input:
4 to 20 mA.
Standard Features:
Position indicator and two limit switches.

Features

  • Machined flats attach disc/stem - no pins
  • Phenolic backed cartridge seat design for extended service and ease of replacement
  • Extended neck for insulation - no fabricated extensions required
  • Capable of being configured to fit any application
  • Limit switches can be mounted to manual valves for remote monitoring

Accessories

Model Number Description Usually Ships Price Order
Air filter regulator, range 0-121 psi (0-8 bar), aluminum body AFR2-2 Air filter regulator, range 0-121 psi (0-8 bar), aluminum body Same Day $66.50 Order
Regulator, 1/4 R2-2120 Regulator, 1/4" NPT, pressure range 120 psi. $31.50 Order
Volume booster, 1.02 Cv, 1/4 VB-01 Volume booster, 1.02 Cv, 1/4" NPT in/out connection, aluminum Same Day $170.00 Order

Videos

Model Chart

WE20-X-X-XXX-OPT   WE20 ELECTRIC BUTTERFLY VALVE

        1ST SYMBOL (1ST X) RANGE

           ATD02   2  IN ELECTRIC TWO-POSITION
           BTD02   2-1/2 IN ELECTRIC TWO-POSITION
           CTD02   3  IN ELECTRIC TWO-POSITION
           DTD03   4  IN ELECTRIC TWO-POSITION
           ETD04   5  IN ELECTRIC TWO-POSITION
           FTD04   6  IN ELECTRIC TWO-POSITION
           GTD05   8  IN ELECTRIC TWO-POSITION
           HTD06   10 IN ELECTRIC TWO-POSITION
           ITD07   12 IN ELECTRIC TWO-POSITION
           AMD02   2  IN ELECTRIC MODULATING
           BMD02   2-1/2 IN ELECTRIC MODULATING
           CMD02   3  IN ELECTRIC MODULATING
           DMD03   4  IN ELECTRIC MODULATING
           EMD04   5  IN ELECTRIC MODULATING
           FMD04   6  IN ELECTRIC MODULATING
           GMD05   8  IN ELECTRIC MODULATING
           HMD06   10 IN ELECTRIC MODULATING
           IMD07   12 IN ELECTRIC MODULATING
           ATH03   2  IN EXP ELECTRIC TWO-POSITION
           BTH03   2-1/2 IN EXP ELECTRIC TWO-POSITION
           CTH05   3  IN EXP ELECTRIC TWO-POSITION
           DTH05   4  IN EXP ELECTRIC TWO-POSITION
           ETH06   5  IN EXP ELECTRIC TWO-POSITION
           FTH08   6  IN EXP ELECTRIC TWO-POSITION
           GTH09   8  IN EXP ELECTRIC TWO-POSITION
           HTH10   10 IN EXP ELECTRIC TWO-POSITION
           ITH11   12 IN EXP ELECTRIC TWO-POSITION
           AMH03   2  IN EXP ELECTRIC MODULATING
           BMH03   2-1/2 IN EXP ELECTRIC MODULATING
           CMH05   3  IN EXP ELECTRIC MODULATING
           DMH05   4  IN EXP ELECTRIC MODULATING
           EMH06   5  IN EXP ELECTRIC MODULATING
           FMH08   6  IN EXP ELECTRIC MODULATING
           GMH09   8  IN EXP ELECTRIC MODULATING
           HMH10   10 IN EXP ELECTRIC MODULATING
           IMH11   12 IN EXP ELECTRIC MODULATING
        
        2ND SYMBOL (2ND X) BODY TYPE AND LINER OF BUTTERFLY VALVE
           WE      WAFER EPDM
           WP      WAFTER PTFE
           LE      LUG EPDM
           LP      LUG PTFE
          
        3RD SYMBOL (3RD X) ACTUATOR VOLTAGE (ELECTRIC ACTUATORS)
           N       NO SOLENOID
           A       110 VAC
           B       220 VAC
           C       24 VAC
           D       24 VDC

     
WE20-X-X-XXX-OPT   WE20 PNEUMATIC BUTTERFLY VALVE

        1ST SYMBOL (1ST X) RANGE

           AHD00   2  IN HAND OPERATED
           BHD00   2-1/2 IN HAND OPERATED
           CHD00   3  IN HAND OPERATED
           DHD00   4  IN HAND OPERATED
           EHD00   5  IN HAND OPERATED
           FHD00   6  IN HAND OPERATED
           GHD00   8  IN HAND OPERATED
           HHD00   10 IN HAND OPERATED
           IHD00   12 IN HAND OPERATED
           ADA03   2  IN DOUBLE ACTING
           BDA03   2-1/2 IN DOUBLE ACTING
           CDA04   3  IN DOUBLE ACTING
           DDA05   4  IN DOUBLE ACTING
           EDA06   5  IN DOUBLE ACTING
           FDA07   6  IN DOUBLE ACTING
           GDA08   8  IN DOUBLE ACTING
           HDA09   10 IN DOUBLE ACTING
           IDA11   12 IN DOUBLE ACTING
           ASR04   2  IN SPRING RETURN
           BSR04   2-1/2 IN SPRING RETURN
           CSR06   3  IN SPRING RETURN
           DSR07   4  IN SPRING RETURN
           ESR08   5  IN SPRING RETURN
           FSR09   6  IN SPRING RETURN
           GSR10   8  IN SPRING RETURN
           HSR11   10 IN SPRING RETURN
           ISR11   12 IN SPRING RETURN
2ND SYMBOL (2ND X) BODY TYPE AND LINER OF BUTTERFLY VALVE
           WE      WAFER EPDM
           WP      WAFTER PTFE
           LE      LUG EPDM
           LP      LUG PTFE
3RD SYMBOL (3RD X) SOLENOID (PNEUMATIC ACTUATOR ONLY)
           N       NO SOLENOID
           A       NEMA 4X NAMUR SOLENOID
4TH SYMBOL (4TH X) SOLENOID VOLTAGE (PNEUMATIC ACTUATOR ONLY)
                   NO SYMBOL FOR ELECTRIC ACTUATORS
           N       NO SOLENOID
           A       110 VAC
           B       220 VAC
           C       24 VAC
           D       24 VDC
           E       12 VDC
OPTIONS (OPT) (PNEUMATIC ACTUATORS ONLY)
                   
         -NO       FAIL OPEN SPRING RETURN ACTUATOR

 

 

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