Home / Markets / WEAVALVES / Products / Valves / Valves / Ball / Automated / Series WE31 Series WE31 3-Way NPT Stainless Steel Ball Valve Full Port, Vented Ball, Electric or Pneumatic Actuators View All Product Images The Series WE31 incorporates a full port 3-way SS ball valve for great flow rates with minimal pressure drop. The valve features a blowout-proof stem for added safety, reinforced PTFE seats and seals for longer life, and a 316 SS (ASTM CF8M) ball for better performance. Actuators are direct 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 WE31 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 to 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. Also available is the SN 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. Product Applications Gas or liquid flow control Ideal for quick bubble tight shut-off Mixing or diverting liquids and gases Ordering Specifications Features Support Library Drawings Accessories Videos Model Chart Related Products Photo Downloads Reviews Models & Ordering Shipping Information All shipping times are dependent on product availability at time of shipment. Although we make every effort to ensure a continuous supply of our products, occasional circumstances may force us to temporarily run out of a product, or have shipping delays. Should this occur, customers will be notified soon after placement of any orders for such products and, if applicable, items will be put on backorder. For orders requiring expedited shipment, our customer service team can be contacted to confirm product availability COVID-19 Update: Due to high customer demand, lead time on some products may be up to two weeks. While this is a developing health situation, we are working continuously to take the necessary measures to ensure that the products you need are available with minimal interruption. Build Your Custom Part. Use our Product Configurator Specifications VALVE Service: Compatible liquids and gases. Body: 3-way. Line Sizes: 1/2 to 2". End Connections: Female NPT. Pressure Limits: 28" Hg to 1000 psi (-0.7 to 69 bar) up to 250°F. Wetted Materials: Body and ball: 316 SS (CF8M); Stem: 316 SS; Seat: RTFE/PTFE; Seal, Washer, and Packing: PTFE. Temperature Limits: -20 to 392°F (-29 to 200°C). Other Materials: O-ring: Fluoroelastomer; Handle: 304 SS; Washer: 301 SS; Stem Nut, Locking Device, Gland Ring: 304 SS; Handle Sleeve: PVC. Agency Approvals: Meets the technical requirements of EU Directive 2011/65/ EU (RoHS II). 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: 80 psi (5.5 bar). Maximum Supply Pressure: 120 psi (8.6 bar). Air Connections: DA01: 1/8" female NPT; DA02 to DA4: 1/4" female NPT; SR03 to SR07: 1/4" female NPT. 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, 24 VAC or 24 VDC (MD models not available in 24 VDC). Power Consumption: See instruction manual. Cycle Time (per 90°): TD01: 4 s; MD01: 10 s; TD02 and MD02: 20 s; TD03 and MD03: 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 “TI” and “MI” 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: -40 to 140°F (-40 to 60°C). Electrical Connection: 1/2" female NPT. Modulating Input: 4 to 20 mA. Standard Features: Position indicator and two limit switches. Features Capable of being configured to fit any application Limit switches can be mounted to manual valves for remote monitoring Vented ball to reduce operating torque Weatherproof or explosion-proof electric actuators Double acting or spring return anodized aluminum pneumatic actuators Full port design reduces the pressure drop across the valve Accessories Model Number Description Usually Ships* Price Order VB-01 Volume booster, 1.02 Cv, 1/4" NPT in/out connection, aluminum Consult Factory $182.00 Order Videos Model Chart WE31-X-X-XXX WE31 3-WAY PNEUMATIC NPT STAINLESS STEEL BALL VALVE 1ST SYMBOL (1ST X) RANGE CHD00 1/2 IN HAND OPERATED DHD00 3/4 IN HAND OPERATED EHD00 1 IN HAND OPERATED FHD00 1-1/4 IN HAND OPERATED GHD00 1-1/2 IN HAND OPERATED HHD00 2 IN HAND OPERATED CDA02 1/2 IN DOUBLE ACTING DDA02 3/4 IN DOUBLE ACTING EDA03 1 IN DOUBLE ACTING FDA03 1-1/4 IN DOUBLE ACTING GDA04 1-1/2 IN DOUBLE ACTING HDA04 2 INDOUBLE ACTING CSR03 1/2 IN SPRING RETURN DSR03 3/4 IN SPRING RETURN ESR04 1 IN SPRING RETURN FSR05 1-1/4 INSPRING RETURN GSR06 1-1/2 IN SPRING RETURN HSR07 2 IN SPRING RETURN 2ND SYMBOL (2ND X) VALVE POSITION T1 FLOW PATH A T2 FLOW PATH B T3 FLOW PATH C T4 FLOW PATH D L1 FLOW PATH E 3RD SYMBOL (3RD X) SOLENOID (PNEUMATIC ACTUATOR ONLY) N NO SOLENOID A NEMA 4X NAMUR SOLENOID 4TH SYMBOL (4TH X) SOLENOID VOLTAGE (PNEMATIC ACTUATOR ONLY) N NO SOLENOID A 110 VAC B 220 VAC C 24 VAC D 24 VDC E 12 VDC 5TH SYMBOL (5TH X) POSITIONER AND SWITCHES 00 NONE 01 42ADO EXP LIMIT SWITCH 02 45VDO EXP POSITION TRANSMITTER 03 42ADO-B ATEX LIMIT SWITCH 04 42ADO-IE IECEX LIMIT SWITCH 06 QV-210101 POLY LIMIT SWITCH 07 VPS AND P1 PROX SWITCH 08 265ER-D5 POSITIONER 09 285ER-D5 SMART POSITIONER WE31-X-X-XXX WE31 3-WAY ELECTRIC NPT STAINLESS STEEL BALL VALVE 1ST SYMBOL (1ST X) RANGE CTD01 1/2 IN ELECTRIC TWO-POSITION DTD01 3/4 IN ELECTRIC TWO-POSITION ETD02 1 IN ELECTRIC TWO-POSITION FTD02 1-1/4 IN ELECTRIC TWO-POSITION GTD03 1-1/2 IN ELECTRIC TWO-POSITION HTD03 2 IN ELECTRIC TWO-POSITION CMD01 1/2 IN ELECTRIC MODULATING DMD01 3/4 IN ELECTRIC MODULATING EMD02 1 IN ELECTRIC MODULATING FMD02 1-1/4 IN ELECTRIC MODULATING GMD03 1-1/2 IN ELECTRIC MODULATING HMD03 2 IN ELECTRIC MODULATING CTI01 1/2 IN EXP ELECTRIC TWO-POSITION DTI02 3/4 IN EXP ELECTRIC TWO-POSITION ETI02 1 IN EXP ELECTRIC TWO-POSITION FTI04 1-1/4 IN EXP ELECTRIC TWO-POSITION GTI05 1-1/2 IN EXP ELECTRIC TWO-POSITION HTI06 2 IN EXP ELECTRIC TWO-POSITION CMI01 1/2 IN EXP ELECTRIC MODULATING DMI02 3/4 IN EXP ELECTRIC MODULATING EMI02 1 IN EXP ELECTRIC MODULATING FMI04 1-1/4 IN EXP ELECTRIC MODULATING GMI05 1-1/2 IN EXP ELECTRIC MODULATING HMI06 2 IN EXP ELECTRIC MODULATING 2ND SYMBOL (2ND X) VALVE POSITION T1 FLOW PATH A T2 FLOW PATH B T3 FLOW PATH C T4 FLOW PATH D L1 FLOW PATH E 3RD SYMBOL (3RD X) ACTUATOR VOLTAGE (ELECTRIC ACTUATORS) A 110 VAC B 220 VAC C 24 VAC D 24 VDC Product Literature Manuals Instruction Manual Catalog Pages Priced Unpriced Drawings CAD Drawing in format .DWG Adobe Reader in format .PDF Related Products Series WE01 2-Piece NPT Stainless Steel Ball Valve Series WE02 3-Piece NPT Stainless Steel Ball Valve Series WE03 3-Piece Tri-Clamp Stainless Steel Ball Valve Series WE04 2-Piece Flanged Stainless Steel Ball Valve Series WE33 3-Way Tri-Clamp Stainless Steel Ball Valve Series WE34 3-Way Flanged Stainless Steel Ball Valve Series ACT Pneumatic and Electric Actuators Photo Downloads You must be logged in to view this content. 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