Dwyer WE31 User Manual
Series WE31 3-Way Stainless Steel Ball Valve
Specifications - Installation and Operating Instructions
he modulating actuator accepts a 4 to 20
t
mA input for valve positioning. Actuators
feature thermal overload protection and
permanently lubricated gear train.
he pneumatic double acting actuator
T
ses an air supply to drive the valve open
u
nd closed. The actuator has two supply
a
ports, with one driving the valve open
and the other driving the valve closed.
Spring return pneumatic actuators use
he air supply to open the valve, and
t
nternally loaded springs return the valve
i
o the closed position. Also available is
t
he SN solenoid valve to electrically
t
switch the air supply pressure between
the air supply ports for opening and
closing the valve. Actuators are
constructed of anodized and epoxy
oated aluminum for years of corrosion
c
ree service.
f
WE31-DHD00-T1
WE31-DDA02-L1
he Series WE31 incorporates a full port
T
3-way SS ball valve for great flow rates
with minimal pressure drop. The valve
features a blowout-proof stem for added
afety, reinforced PTFE seats and seals
s
or longer life, and a 316 SS (ASTM
f
F8M) ball for better performance.
C
ctuators are direct mounted creating a
A
compact assembly for tight spaces. Limit
switches are able to be mounted directly
to the valves allowing for remote position
ndication.
i
he Series WE31 can be configured with
T
ither an electric or pneumatic actuator.
e
Electric actuators are available in
weatherproof or explosion-proof, a
variety of supply voltages and twoposition or modulating control. Two-
osition actuators use the supply voltage
p
o drive the valve open or closed, while
t
Bulletin V-WE31
WE31-DDA02-T1-AA01
WE31-DDA02-T3-NN05
WE31-DTD01-T3-A
SPECIFICATIONS
VALVE
ervice: Compatible liquids and gases.
S
ody: 3-way.
B
ine Sizes: 1/4 to 2˝.
L
End Connections: Female NPT.
Pressure Limits: 20˝ Hg to 1000 psi
(-0.7 to 69 bar).
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.
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.
Electric “TD” and “MD” Series
Power Requirements: 110 VAC,
20 VAC, 24 VAC or 24 VDC (MD
2
odels not available in 24 VDC).
m
ower Consumption: See page 8.
P
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 page 8.
Cycle Time (per 90°):
TI01 and MI01: 2.5 s;
TI02 and MI02: 5 s;
TI03 and MI03: 5 s;
TI04 and MI04: 10 s;
TI05 and MI06: 15 s.
Duty Rating:
Two-Position:
TI01-TI06: 25%;
Modulating:
MI01-MI06: 75%.
Enclosure Rating: NEMA 7
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.
.
W.E. ANDERSON,
A DIV. OF DWYER INSTRUMENTS, INC.
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360 U. S. A.
Phone: 219/879-8000 www.dwyer-inst.com
Fax: 219/872-9057 e-mail: info@dwyermail.com
V
ENTED BALL
1
3
1
8
2
4
6
8
1
0
1
2
1
3
14
1
2
5
1
5
1
6
1
7
11
9
7
L
Ød
H
H1
L1
ØD1
ØD2
S
M1
ØRa
ØRb
W
PO
V
VA
PU
Si
1
3
1
1
1
2
A
L
LVE D
/
2
/
4
˝
-
1
-
1
˝
VE
LA
R
M
O
D
ELS
EMA 4X
EMA 4X Two
N
osition Electric
pring Return
ouble Acting
v
z
C
e
˝
˝
/
/
gal/min)
(
11
14
18
4
˝
3
4
2
˝
4
8
0
9
B
I
LL
O
F
M
A
TER
IM
EN
SIO
N
A
L D
H
M
WE31-CHD00-T1
WE31-DHD00-T1
WE31-EHD00-T1
W
W
W
I
A
LS
R
AWIN
and Operated
odel
E31-FHD00-T1
E31-GHD00-T1
E31-HHD00-T1
G
D
neumatic Model
P
WE31-CDA02-T2
WE31-DDA02-T2
WE31-EDA03-T2
E31-FDA03-T2
W
E31-GDA04-T2
W
E31-HDA04-T2
W
S
neumatic Model
P
WE31-CSR02-T2
WE31-DSR02-T2
WE31-ESR04-T2
E31-FSR05-T2
W
E31-GSR06-T2
W
E31-HSR07-T2
W
P
110 VAC) Model
(
WE31-CTD01-T2-A
WE31-DTD01-T2-A
WE31-ETD02-T2-A
E31-FTD02-T2-A
W
E31-GTD03-T2-A
W
E31-HTD03-T2-A
W
I
t
e
m
1
2
3
4
5
6
7
8
9
1
0
1
1
1
2
1
3
1
4
1
5
1
6
1
7
1
8
escription
D
ody
B
Cap-A
Ball
Ball Seat
tem
S
asket
G
hrust Washer
T
O-Ring
Packing
Gland
Spring Washer
tem Nut
S
top Washer
S
Handle Washer
ocking Device
L
andle
H
andle Cover
H
Cap-B
N
odulating Electric
M
110 VAC) Model
(
WE31-CMD01-T2-A
WE31-DMD01-T2-A
WE31-EMD02-T2-A
E31-FMD02-T2-A
W
E31-GMD03-T2-A
W
E31-HMD03-T2-A
W
aterial
M
ASTM A351-CF8M
PTFE
US 316
S
TFE
P
EEK + PTFE
P
Fluoroelastomer
PTFE
US 304
S
VC
P
ASTM A351-CF8M
Model
Number
WE31-CHD00-L
WE31-DHD00-L
WE31-EHD00-L
WE31-FHD00-L
WE31-GHD00-L
WE31-HHD00-L
WE31-CHD00-T
WE31-DHD00-T
WE31-EHD00-T
WE31-FHD00-T
WE31-GHD00-T
WE31-HHD00-T
L
Ød
in(mm)
1/2˝
(12.5)
41/64˝
(16)
51/64˝
(20)
63/64˝
(25)
1-17/64˝
(32)
1-1/2˝
(38)
1/2˝
(12.5)
41/64˝
(16)
51/64˝
(20)
63/64˝
(25)
1-17/64˝
(32)
1-1/2˝
(38)
in(mm)
3˝
(76)
3-25/64˝
(86)
3-29/32˝
(99)
4-39/64˝
(117)
4-57/64˝
(124)
5-53/64˝
(148)
3˝
(76)
3-25/64˝
(86)
3-29/32˝
(99)
4-39/64˝
(117)
4-57/64˝
(124)
5-53/64˝
(148)
Size
1/2˝
3/4˝
1˝
1-1/4˝
1-1/2˝
2˝
1/2˝
3/4˝
1˝
1-1/4˝
1-1/2˝
2˝
L1
in(mm)
2-5/16˝
(58.5)
2-27/32˝
(72)
3-7/32˝
(81.5)
3-47/64˝
(94.5)
4-3/32˝
(104)
4-59/64˝
(125)
2-5/16˝
(58.5)
2-27/32˝
(72)
3-7/32˝
(81.5)
3-47/64˝
(94.5)
4-3/32˝
(104)
4-59/64˝
(125)
in(mm)
2-7/8˝
(73)
3˝
(76)
3-7/16˝
(87)
3-43/64˝
(93)
4-11/32˝
(110)
4-11/16˝
(119)
2-7/8˝
(73)
3˝
(76)
3-7/16˝
(87)
3-43/64˝
(93)
4-11/32˝
(110)
4-11/16˝
(119)
in(mm)
4-27/32˝
(123)
4-27/32˝
(123)
6-1/32˝
(153)
6-1/32˝
(153)
7-7/32˝
(183)
7-7/32˝
(183)
4-27/32˝
(183)
4-27/32˝
(183)
6-1/32˝
(153)
6-1/32˝
(153)
7-7/32˝
(183)
7-7/32˝
(183)
W
H
ØD1
in(mm)
1-27/64˝
(36)
1-27/64˝
(36)
1-21/32˝
(42)
1-21/32˝
(42)
1-31/32˝
(50)
1-31/32˝
(50)
1-27/64˝
(36)
1-27/64˝
(36)
1-21/32˝
(42)
1-21/32˝
(42)
1-31/32˝
(50)
1-31/32˝
(50)
ØD2
in(mm)
1-21/32˝
(42)
1-21/32˝
(42)
1-31/32˝
(50)
1-31/32˝
(50)
2-49/64˝
(70)
2-49/64˝
(70)
1-21/32˝
(42)
1-21/32˝
(42)
1-31/32˝
(50)
1-31/32˝
(50)
2-49/64˝
(70)
2-49/64˝
(70)
Page 2
ISO
F03/04
F03/04
F04/05
F04/05
F05/07
F05/07
F03/04
F03/04
F04/05
F04/05
F05/07
F05/07
H1
in(mm)
23/64˝
(9)
23/64˝
(9)
7/16˝
(11)
7/16˝
(11)
9/16˝
(14)
9/16˝
(14)
23/64˝
(9)
23/64˝
(9)
7/16˝
(11)
7/16˝
(11)
9/16˝
(14)
9/16˝
(14)
H2
in(mm)
1-5/8˝
(41)
1-47/64˝
(44)
2-7/64˝
(53.5)
2-21/64˝
(59)
3˝
(76)
3-5/16˝
(84)
1-5/8˝
(41)
1-47/64˝
(44)
2-7/64˝
(53.5)
2-21/64˝
(59)
3˝
(76)
3-5/16˝
(84)
in(mm)
23/64˝
(9)
23/64˝
(9)
7/16˝
(11)
7/16˝
(11)
9/16˝
(14)
9/16˝
(14)
23/64˝
(9)
23/64˝
(9)
7/16˝
(11)
7/16˝
(11)
9/16˝
(14)
9/16˝
(14)
in(mm)
1/8˝
(3)
1/8˝
(3)
9/64˝
(3.5)
9/64˝
(3.5)
3/16˝
(4.5)
3/16˝
(4.5)
1/8˝
(3)
1/8˝
(3)
9/64˝
(3.5)
9/64˝
(3.5)
3/16˝
(4.5)
3/16˝
(4.5)
in(mm)
1/8˝
(3)
1/8˝
(3)
1/8˝
(3)
1/8˝
(3)
9/64˝
(3.5)
9/64˝
(3.5)
1/8˝
(3)
1/8˝
(3)
1/8˝
(3)
1/8˝
(3)
9/64˝
(3.5)
9/64˝
(3.5)
Port
L
L
L
L
L
L
T
T
T
T
T
T
M1
M12x1.75
M12x1.75
M14x2.0
M14x2.0
M18x2.0
M18x2.0
M12x1.75
M12x1.75
M14x2.0
M14x2.0
M18x2.0
M18x2.0
Cv
(gal/min)
11
14
18
43
84
90
12
16
20
46
88
98
ØRb
ØRa
S
A
W/ ELECTRIC ACTUATOR
E
D
C
F
B
NPT
6
2
G
W
/ PNEUMATIC ACTUATOR
E
D
C
F
B
N
PT
G
W/ EXPLOSION-PROOF ELECTRIC ACTUATOR
E
D
C
F
B
NPT
OPEN
G
U
T
O
M
A
TED
V
A
L
VE
D
R
AW
I
N
G
S
D
oubl
e
A
c
t
i
ng
Pne
um
a
t
i
c
A
c
t
ua
t
or
3
/
4
˝
1
N
B
C
D
E
F
G
Spr
N
B
C
D
E
F
G
PT
PT
i
ng
1
/
2
˝
5
1
2
7
3
7
5
1
1
4
2
5
1
5
1
2
7
3
7
5
1
1
4
2
5
5
-
1
/
4
˝
1
3
3
m
m
2
-
3
/
4
˝
7
1
m
m
3
˝
8
6
m
m
5
-
3
/
4
˝
1
4
5
m
m
1
-
5
/
8
˝
4
1
m
m
2
-
3
/
8
˝
7
8
.
5
m
m
R
e
t
ur
n
Pne
3
/
2
˝
5
-
1
/
4
˝
1
3
3
m
m
2
-
3
/
4
˝
7
1
m
m
3
˝
8
6
m
m
5
-
3
/
4
˝
1
4
5
m
m
1
-5
/8
˝
4
1
m
m
2
-3
/8
˝
7
8
.5
m
m
3
1
6
4
1
2
/
3
1
6
4
1
2
3
6
3
mm
3
mm
3
5
5
mm
7
mm
4
3
6
3
mm
3
mm
3
5
5
mm
7
mm
/
8
mm
/
4
/
8
/
4
mm
/
8
/
8
um
˝
/
8
mm
/
4
/
8
/
4
mm
/
8
/
8
˝
˝
6
-
1
6
˝
3
-
8
2
˝
4
˝
9
9
˝
6
-
1
6
˝
1
-
4
6
˝
3
-
8
1
a
t
i
c
1
˝
˝
6
-
1
7
˝
3
-
9
4
˝
4
˝
9
9
˝
7
-
2
0
˝
2
˝
5
2
˝
3
-
8
1
3
/
1
1
/
mm
mm
5
/
9
3
/
mm
1
/
.
5
A
7
/
3
1
/
mm
mm
7
/
1
mm
1
/
.
5
8
˝
.
5
4
˝
8
˝
mm
4
˝
4
˝
mm
c
t
8
˝
.
5
4
˝
8
˝
mm
4
˝
mm
mm
ua
mm
1
-
1
/
4
˝
1
-
1
/
2
˝
2
6
-
5
/
8
˝
6
2
-
6
6
4
-
8
˝
0
-
0
5
4
7
1
/
mm
5
/
7
5
/
9
3
/
mm
3
/
.
5
1
/
3
/
7
1
5
/
7
1
/
9
1
/
mm
3
/
.
5
mm
4
˝
8
˝
mm
8
˝
mm
4
˝
4
˝
mm
4
˝
8
˝
mm
mm
8
˝
mm
4
˝
mm
8
˝
4
˝
7
1
3
9
4
1
7
2
2
5
4
1
1
-
8
˝
2
0
4
˝
1
0
4
-
1
2
8
-
2
0
2
-
5
5
4
-
1
0
1
3
8
4
11
6
1
1
4
3
9
t
or
1
7
1
4
1
4
11
8
2
2
5
3
9
-
3
9
-
3
4
-
7
2
-
7
0
˝
2
-
1
0
1
4
1
7
4
1
9
1
mm
1
4
/
4
6
mm
/
4
mm
/
8
4
mm
/
8
1
mm
mm
/
8
4
mm
/
2
mm
mm
/
8
mm
/
4
mm
/
8
/
8
mm
˝
˝
8
˝
2
0
4
mm
˝
3
-
3
/
4
˝
9
4
mm
˝
5
-
7
/
8
˝
1
4
8
mm
˝
7
-
7
/
8
˝
2
0
1
mm
2
˝
5
2
mm
˝
5
˝
1
2
5
mm
˝
2
˝
9
-
3
/
8
˝
2
3
9
mm
4
-
7
/
8
˝
1
2
2
mm
˝
5
-
7
/
8
˝
1
4
8
mm
˝
1
0
-
7
/
8
˝
2
7
5
mm
˝
2
-
1
/
2
˝
6
4
mm
˝
5
˝
1
2
5
mm
3
/
4
˝
1
1
˝
-
1
/
4
˝
1
-
1
/
2
8˝
5 mm
4 mm
8
˝
2
0
2
4
-
3
1
2
1
4
-
7
1
2
4
7
-
3
1
9
6
3
-
7
9
8
mm
4
-
1
1
0
4
1-
10-
256.
8-1/
216 mm
4-7/
124 mm
8-1/
216 mm
5-
136.
4-1/8˝
104 mm
mm
/
4
mm
/
8
mm
/
4
mm
/
8
/
8
mm
1/
3/
˝
˝
˝
˝
˝
˝
2˝
1/
1 mm
2˝
8˝
2˝
8˝
4 mm
2
˝
8
-
1
/
4
˝
2
1
0
mm
4
-
3
/
4
˝
1
2
1
mm
5
-
7
/
8
˝
1
4
8
mm
7
-
3
/
4
˝
1
9
6
mm
3
-
7
/
8
˝
9
8
mm
5
˝
1
2
5
mm
2˝
8˝
10-
3/
8˝
264.
1 mm
8-
1/
2˝
216 mm
5-
7/
8˝
148 mm
8-
1/
2˝
216 mm
5-3/
8˝
136.
4 mm
5˝
125 mm
N
PT
1
/2
˝
5
-
3
/
4
˝
6
6
-
1
-
3
/
8
/
8
˝
˝
˝
˝
8 mm
9 mm
7 mm
8 mm
1
6
1
.
4
-
1
/
2
11
3
mm
4
-
5
/
8
11
7
mm
6
-
1
/
4
1
6
0
mm
3
˝
7
7
mm
3
-
3
/
4
9
4
.
5
1-1/
11-3/
161.
8-1/
216 mm
4-
5/
117 mm
8-
1/
216 mm
5-3/
136.
3-3/4˝
94.5 mm
˝
5
mm
˝
˝
˝
˝
mm
4˝
2˝
8˝
2˝
8˝
B
5
-5
/8
˝
1
4
6
.
5
mm
1
5
6
1
4
3
.5
m
m
4
-
1
/
C
4
-1
/2
˝
11
3
m
D
3
˝
7
6
m
6
-1
/4
1
6
0
3
˝
7
7
m
2
-3
/8
5
8
.5
1
/2
˝
8˝
20
3.
9-3
/
2
38
3
˝
7
6
mm
8-1/
216
5˝
12
5
2-3/8˝
58.
5 mm
m
˝
m
m
˝
m
3
8
˝
.
9
2˝
.7 mm
.
8 mm
E
F
G
NPT
B
C
D
E
F
G
m
m
m
mm
mm
2
11
3
mm
3
-
3
/
8
8
6
mm
6
-
1
/
4
1
6
0
mm
3
˝
7
7
mm
2
-
7
/
8
7
2
mm
3/
4˝
10-1/
206.
9-
3/
238.
3-
3/
86 mm
8-1/
216.
5˝
125.
2-7/8˝
72 mm
8˝
8˝
2˝
˝
˝
˝
˝
8˝
3 mm
9 mm
7 mm
8 mm
mm
4
-
1
/
2
11
3
mm
4
˝
9
9
mm
6
-
1
/
4
1
6
0
mm
3
˝
7
7
mm
3
-
1
/
4
8
1
.
5
mm
1˝
8-1/
2˝
215.
9-
3/
8˝
238.
4˝
99 mm
8-
1/
2˝
216.
5˝
125.
3-1/4˝
81.5 mm
Page 3
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