Dwyer Instruments SERIES WE31 Catalog Page
®
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SERIES WE31 | W.E. ANDERSON™ BY DWYER
3-WAY NPT STAINLESS STEEL BALL VALVES
VALVES
Full Port, Vented Ball, Electric or Pneumatic Actuators
WE31-DHD00-T1
E
O
D
I
V
O
N
L
I
N
WE31-DDA02-L1 WE31-DDA02-T3-NN05
The Series WE31 3-Way NPT Stainless Steel Ball Valves incorporate a full port
valve for great ow rates with minimal pressure drop. The valve features a blowoutproof 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 congured 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.
Valves,
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
Ball, Automated
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.
FEATURES/BENEFITS
• Capable of being congured to t 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
APPLICATIONS
• Gas or liquid ow control
• Ideal for quick bubble tight shut-off
• Mixing or diverting liquids and gases
WE31-DDA02-T1-AA01
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 DA04: 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.
WE31-DTD01-T3-A
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: 4-20 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: 4-20 mA.
Standard Features: Position indicator
and two limit switches.
DWYER INSTRUMENTS, INC. | 404
“T” Port Ball
“L” Port Ball
®
SERIES WE31 | W.E. ANDERSON™ BY DWYER
3-WAY NPT STAINLESS STEEL BALL VALVES
Full Port, Vented Ball, Electric or Pneumatic Actuators
MODEL CHART
SizeCv(gal/min)
1/2˝
11
3/4˝
14
1˝
18
1-1/4˝
43
1-1/2˝
84
2˝
90
Popular
Hand Operated
Model
WE31-CHD00-T1
WE31-DHD00-T1
WE31-EHD00-T1
WE31-FHD00-T1
WE31-GHD00-T1
WE31-HHD00-T1
Popular
Double Acting
Pneumatic
Model
WE31-CDA02-T2
WE31-DDA02-T2
WE31-EDA03-T2
WE31-FDA03-T2
WE31-GDA04-T2
WE31-HDA04-T2
Popular
Spring Return
Pneumatic
Model
WE31-CSR02-T2
WE31-DSR03-T2
WE31-ESR04-T2
WE31-FSR05-T2
WE31-GSR06-T2
WE31-HSR07-T2
Popular NEMA 4X
Two Position
Electric (110 VAC)
Model
WE31-CTD01-T2-A
WE31-DTD01-T2-A
WE31-ETD02-T2-A
WE31-FTD02-T2-A
WE31-GTD03-T2-A
WE31-HTD03-T2-A
VALVES
Popular NEMA 4X
Modulating
Electric (110 VAC)
Model
WE31-CMD01-T2-A
WE31-DMD01-T2-A
WE31-EMD02-T2-A
WE31-FMD02-T2-A
WE31-GMD03-T2-A
WE31-HMD03-T2-A
MODEL CHART - HAND OPERATED & PNEUMATIC ACTUATOR
Example WE31 -CSR02 -T1 -A A 00 WE31-CSR02-T1-AA00
Series WE31 316 SS 3-way NPT
Size and
Range
Valve
Position
Solenoid N
Solenoid
Voltage
Positioner
and
Switches
ACCESSORIES
Model Description
AFR4
VB-01
Air lter regulator 0 to 120 psi
Volume booster
CHD00
DHD00
EHD00
FHD00
GHD00
HHD00
CDA02
DDA02
EDA03
FDA03
GDA04
HDA04
CSR02
DSR03
ESR04
FSR05
GSR06
HSR07
T1
T2
T3
T4
L1
1/2˝ hand operated
3/4˝ hand operated
1˝ hand operated
1-1/4˝ hand operated
1-1/2˝ hand operated
2˝ hand operated
1/2˝ double acting
3/4˝ double acting
1˝ double acting
1-1/4˝ double acting
1-1/2˝ double acting
2˝ double acting
1/2˝ spring return
3/4˝ spring return
1˝ spring return
1-1/4˝ spring return
1-1/2˝ spring return
2˝ spring return
Flow path A
Flow path B
Flow path C
Flow path D
Flow path E
A
No solenoid
NEMA 4X NAMUR solenoid
N
No solenoid
A
110 VAC
B
220 VAC
C
24 VAC
D
24 VDC
E
12 VDC
00
None
01
42AD0 exp limit switch
02
45VD0 exp position transmitter
03
42AD0-B ATEX limit switch
04
42AD0-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
MODEL CHART - ELECTRIC ACTUATOR
Example WE31 -DMI02 -T2 -A WE31-DMI02-T2-A
Series WE31 316 SS 3-way NPT
Size and
Range
Valve
Position
Actuator
Voltage
REPAIR KIT
Model Valve Series and Size
VRK-36
VRK-37
VRK-38
VRK-40
VRK-41
Parts List - Included in Kit
1 PTFE thrust washer
1 FKM O-ring
2 PTFE stem packing
2 PTFE seals
2 RTFE seats
CTD01
DTD01
ETD02
FTD02
GTD03
HTD03
CMD01
DMD01
EMD02
FMD02
GMD03
HMD03
CTI01
DTI02
ETI02
FTI04
GTI05
HTI06
CMI01
DMI02
EMI02
FMI04
GMI05
HMI06
WE31-1/2˝
WE31-3/4˝
WE31-1˝
WE31-1-1/2˝
WE31-2˝
1/2˝ NEMA 4X two-position
3/4˝ NEMA 4X two-position
1˝ NEMA 4X two-position
1-1/4˝ NEMA 4X two-position
1-1/2˝ NEMA 4X two-position
2˝ NEMA 4X two-position
1/2˝ NEMA 4X modulating
3/4˝ NEMA 4X modulating
1˝ NEMA 4X modulating
1-1/4˝ NEMA 4X modulating
1-1/2˝ NEMA 4X modulating
2˝ NEMA 4X modulating
1/2˝ exp two-position
3/4˝ exp two-position
1˝ exp two-position
1-1/4˝ exp two-position
1-1/2˝ exp two-position
2˝ exp two-position
1/2˝ exp electric modulating
3/4˝ exp electric modulating
1˝ exp electric modulating
1-1/4˝ exp electric modulating
1-1/2˝ exp electric modulating
2˝ exp electric modulating
T1
Flow path A
T2
Flow path B
T3
Flow path C
T4
Flow path D
L1
Flow path E
A
110 VAC
B
220 VAC
C
24 VAC
D
24 VDC
Ball, Automated
Valves,
T1
Flow Path A
Pos. 1 Pos. 2 Pos. 1 Pos. 2 Pos. 1 Pos. 2 Pos. 1 Pos. 2 Pos. 1 Pos. 2
T2
Flow Path B
T3
Flow Path C
T4
Flow Path D
L1
Flow Path E
DWYER INSTRUMENTS, INC. |
405
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