and Weco® Butterfly Valves - Arm-Tex

Weco Butterfly Valves
and
®
Choice of operators, actuators
All Weco butterfly valve models can be
equipped with a wide range of operators and
actuators.
Outstanding flow efficiency
Streamlined disc design minimizes
turbulence and pressure drop for greater
flow efficiency.
Fast, simple field repair
If a valve should need repair, it can be
completely reconditioned in the field using
interchangeable stock parts.
Leak-proof installation
Ribbed seat face eliminates
the need for flange gaskets
and ensures leak-proof
installation.
Weco butterfly valves offer the ultimate in dependable, economical flow control. These
field-proven valves are available from stock in 2 through 24-inch sizes and can handle
working pressures up to 175 psi. For pressure ratings from 176 psi up to 285 psi,
consult factory. Wafer, notched, and lug-type body styles meet requirements for new
or existing flowline systems. Using a variety of materials, valve bodies, discs, stems,
and seats can be individually matched to specific operating conditions, including
temperature range, type and concentration of fluid, and various flow conditions. All
materials meet ASTM and AISI standards.
FMC Technologies, Inc.
14
Actuators
Triple seal design
An O-ring, undersized stem holes in the seat,
and corresponding flats on seat and disc
hubs provide three completely independent
seals. This unique feature isolates both
the upper and lower stems from line fluid,
allowing use of standard stem material.
No in-line pins, screws or bolts
Hex drive provides positive disc
movement without in-line pins, screws, or
bolts.
Self-centering disc
Dual stem with upper and lower tangential
pins allows a self-centering disc. This design
provides equal sealing pressure 360° around
the disc, ensuring positive shut off and
extending service life.
Elastomer seat
An elastomer seat with two-piece, hard
phenolic back-up eliminates seat walking
and allows the seat to expand under
pressure, making the valve body the
pressure containing component.
Standard Materials of Construction
Valve Part
Standard Material
Optional Materials
Seat & O-ring
Nitrile (Buna N)
(-20°F to 200°F)
Hypalon® , Teflon® ,Viton® ,
EPDM, Red Natual Rubber
Body
Ductile Iron
Aluminum, Steel, Stainless Steel
Stem (upper & lower)
410 Stainless Steel
316 Stainless Steel
Disc
Ductile Iron
Aluminum, Bronze, 316 Stainless Steel,
Ryton® , Kynar® , Halar, Teflon® Coated,
Nickle Plated, Hastelloy®
Spirol/Retainer Pins
302 Stainless Steel
Other materials of construction available. Consult factory.
FMC Technologies, Inc.
15
Model 12
Short neck, wafer body; 175 psi cold
working pressure, 2 t0 12-inch sizes;
150 psi cold working pressure, 14 and
16-inch sizes
Recommended service
General on/off and throttling
services from 1mm Hg
absolute vacuum to full
working pressure
Model 12N
Short neck, notched body; 175 psi cold
working pressure, 2 to 6-inch sizes
Recommended service
General on/off and throttling
services from 1mm Hg
absolute vacuum to full
working pressure
Features
•
Features
•
Valves are selfcentering and mount
between 125 or 150 lb
ANSI flanges
Model 22
Long neck, wafer body; 175 psi cold
working pressure, 2 to 12-inch sizes.
Recommended service
General on/off and throttling
services from 1mm Hg
absolute vacuum to full
working pressure
Valves are notched
to fit between
lightweight flanges
Model 22L
Long neck, lug body, 175 psi cold
working pressure, 2 to 24-inch sizes
Recommended service
General on/off and throttling
services from 1mm Hg
absolute vacuum to full
working pressure
Features
•
•
Valves are selfcentering and mount
between 125 or 150
lb ANSI flanges
Features
•
Tapped lugs allow
independent
ustream or
downstream
bolting to 125
or 150 lb ANSI
flanges
•
Long neck allows
for pipe insulation.
Long neck allows for
pipe insulation
See specifications tables (pg. 48 - 53) for sizes, dimensions, weights, materials, and part numbers.
Operators & Actuators
Vane Actuators
All models and sizes of Weco butterfly valves can be
equipped with Weco operators or actuators as well
as other brands of actuators. Typical options include
standard and throttling handles, gear operators,
chain-wheel operators, vane actuators, pneumatic
actuators, special controllers, and positioners.
Recommended service
Quarter-turn, double acting actuator; 2 through 6-inch
valve sizes
Compact, pneumatic
actuator for on/off valve
operation
Features
•
Pneumatic Actuators
Double-acting or fail-safe spring return; 2 through 12inch valves sizes
•
•
Recommended service
Pneumatic actuator for on/off
valve operation
Features
•
•
The only moving
part, the vane, is
cast integral to the
shaft for sturdiness;
does not require field
lubrication
Fully repairable in-line
Mounts directly to
valve in any quadrant
Gear Operators
Mounts directly to Weco butterfly
valves without special adapters or
mounting hardware
Full 90° operation with a
minimum of 30 psi, air, no
adjustments required
Weatherproof, worm gear operator; 2 through 24-inch
valve sizes
Recommended service
Manual on/off or throttling services
Features
•
•
•
•
Standard Handle
Operator has 90° travel arc with
internal travel stop screws for a
plus or minus 20° adjustment at
either end of the travel
Mounts on the valve in any
quadrant
Chain wheel attachment
available
Hand-wheel shaft extensions
available
2 through 12-inch valve sizes
Recommended service
Manual on/off service
Features
•
•
•
Throttling Handle
2 through 12-inch valve sizes
Recommended service
Positive-stop gripper with integral locking lug
ensures full open/full closed operation
Model 12 and 12N valves have a detent plate which
bolts on the valve body in each of four quadrants
Model 22 and 22L valve have a pre-notched top
flange with on/off detent positions
Manual Throttling Service
Features
•
•
Notched detent plate and positive-stop gripper with
integral locking lug ensures positive locking in any of 10
positions from full open or full closed operation
Detent plate bolts on the valve body in each of the four
quadrants.
See specifications tables (pg. 48 - 53) for sizes, dimensions, weights,
materials, and part numbers.
FMC Technologies, Inc.
17
FMC Technologies, Inc.
Flowline Products & Services
Weco® Butterfly Valve Specifications
Model 12
Sizes in.
Part No.
P/N - LT
A
B
Dimensions, in., mm
Weco® Butterfly Valve
Specifications
C
D
E
F
G
H
I
J
2
3227485
3227485-LT
4 31⁄32
126
3
76.2
4 1⁄8
105
2 1⁄16
52.4
5⁄8 Sq.
15.9
4
102
1 1⁄32
26.2
1 5⁄8
41
7⁄16
11.1
3 1⁄4
82.6
2 1⁄2
3227486
3227486-LT
5 5⁄8
150
3 11⁄32
84.9
4 7⁄8
124
2 1⁄2
63.5
5⁄8 Sq.
15.9
4
102
1 1⁄32
26.2
1 3⁄4
45
7⁄16
11.1
3 1⁄4
82.6
Body: Ductile Iron
Disc: Ductile Iron
* 2 inch diameter with 1⁄2 inch keyway
Model 12N
Sizes in.
Part No.
A
B
C
D
Dimensions, in., mm
E
F
G
H
I
J
K
L
M
2
3229885
3229885-LT
4 31⁄32
126
3
76.2
4 1⁄8
105
2 1⁄16
52.4
5⁄8 Sq.
15.9
4
101.6
1 1⁄32
26.2
1 5⁄8
41.3
7⁄16
11.1
3 1⁄4
82.6
3 3⁄4
82.6
4
102
5⁄16
7.9
Body: Ductile Iron
Stems: 416 Stainless Steel
48
3
3227487
3227487-LT
5 29⁄32
150
3 5⁄8
92.1
5 3⁄8
137
3 1⁄16
77.8
5⁄8 Sq.
15.9
4
102
1 1⁄32
26.2
1 3⁄4
45
7⁄16
11.1
3 1⁄4
82.6
4
3245819
3245819-LT
7 9⁄32
185
4 1⁄4
108
6 7⁄8
175
4 1⁄16
103
5⁄8 Sq.
15.9
4
102
1 9⁄32
32.5
2
51
7⁄16
11.1
3 1⁄4
82.6
6
3227493
3227493-LT
7 25⁄32
198
5 5⁄16
135
8 3⁄4
222
6 1⁄16
154
5⁄8 Sq.
15.9
4
102
1 9⁄32
32.5
2 1⁄8
54
7⁄16
11.1
3 1⁄4
82.6
8
3232417
3232417-LT
9 13⁄32
239
7
178
11
279
8 1⁄16
205
7⁄8 Sq.
22.2
6
152
1 9⁄32
32.5
2 1⁄2
64
9⁄16
14.3
5
127
Stems Stainless Steel
10
3227495
3227495-LT
10 21⁄32
271
8 1⁄4
210
13 3⁄8
340
10
254
7⁄8 Sq.
22.2
6
152
1 9⁄32
32.5
2 1⁄2
64
9⁄16
14.3
5
127
I
(For use with lightweight industrial flanges.)
3
3230052
3230052-LT
5 29⁄32
150
3 5⁄8
92.1
5 3⁄8
137
3 1⁄16
77.8
5⁄8 Sq.
15.9
4
101.6
1 1⁄32
26.2
1 3⁄4
44.5
7⁄16
11.1
3 1⁄4
82.6
4 3⁄8
111
6
152
5⁄16
7.9
4
3229886
3229886-LT
7 9⁄32
185
4 1⁄4
108
6 7⁄8
175
4 1⁄16
103
5⁄8 Sq.
15.9
4
101.6
1 9⁄32
32.5
2
50.8
7⁄16
11.1
3 1⁄4
82.6
6 3⁄8
162
6
152
3⁄8
9.5
Disc: Ductile Iron
Seat: Nitrile
5
3229887
3229887-LT
7 9⁄32
185
4 13⁄16
122
7 3⁄4
197
5 1⁄16
129
5⁄8 Sq.
15.9
4
101.6
1 9⁄32
32.5
2 1⁄8
54
7⁄16
11.1
3 1⁄4
82.6
6 29⁄32
175
6
152
3⁄8
9.5
6
3229888
3229888-LT
7 25⁄32
198
5 5⁄16
135
8 3⁄4
222
6 1⁄16
154
5⁄8 Sq.
15.9
4
101.6
1 9⁄32
32.5
2 1⁄8
54
7⁄16
11.1
3 1⁄4
82.6
8 1⁄2
216
8
203
3⁄8
9.5
12
3227496
3227496-LT
12 5⁄32
309
9 3⁄4
248
16 1⁄8
410
12
305
1 1⁄8 Sq.
28.6
6
152
1 9⁄32
32.5
3
76
9⁄16
14.3
5
127
Seat: Nitrile
14
3255865
3255865-LT
14 31⁄32
380
10 3⁄8
264
17 11⁄16
449
13 1⁄4
337
11⁄8 Sq.
28.6
6
152
1 9⁄32
32.5
3
76
9⁄16
14.3
5
127
16
3255869
3255869-LT
17 7⁄16
443
11 15⁄16
303
20 1⁄8
511
15 1⁄4
387
2*
50.8
8
203
3 3⁄16
81
4
102
17⁄32
13.5
6 1⁄2
165
L
Dia., 4 holes thru;
on J dia. bolt circle
No. of notches
equally spaced
M Radius
of notch
F
K
Model 12N only
H
G
A
D
B
C
H
Dia.
FMC Technologies, Inc.
Flowline Products & Services
Weco® Butterfly Valve Specifications
Model 22
Sizes in.
Part No.
P/N - LT
A
B
Dimensions, in., mm
C
D
E
F
G
H
I
J
Body: Ductile Iron
2 1⁄2
3225731
3225731-LT
7 25⁄32
198
3 11⁄32
84.9
4 7⁄8
124
2 1⁄2
63.5
5⁄8 Sq.
15.9
4
101.6
1 1⁄32
26.2
1 3⁄4
44.5
7⁄16
11.1
3 1⁄4
82.6
3
3225732
3225732-LT
8 1⁄16
205
3 5⁄8
92.1
5 3⁄8
131
3 1⁄16
77.8
5⁄8 Sq.
15.9
4
101.6
1 1⁄32
26.2
1 3⁄4
44.5
7⁄16
11.1
3 1⁄4
82.6
4
3225733
3225733-LT
9 5⁄32
233
4 1⁄4
108
6 7⁄8
175
4 1⁄16
103
5⁄8 Sq.
15.9
4
101.6
1 9⁄32
23.5
2
50.8
7⁄16
11.1
3 1⁄4
82.6
5
3225734
3225734-LT
9 21⁄32
245
4 13⁄16
122
7 3⁄4
197
5 1⁄16
129
5⁄8 Sq.
15.9
4
101.6
1 9⁄32
32.5
2 1⁄4
54
7⁄16
11.1
3 1⁄4
82.6
Disc: Ductile Iron
6
3225735
3225735-LT
10 5⁄32
258
5 5⁄16
135
8 3⁄4
222
6 1⁄16
154
5⁄8 Sq.
15.9
4
101.6
1 9⁄32
32.5
2 1⁄4
54
7⁄16
11.1
3 1⁄4
82.6
8
3225736
3225736-LT
11 19⁄32
294.5
7
178
11
279
8 1⁄16
205
7⁄8 Sq.
22.2
6
152.4
1 9⁄32
32.5
2 1⁄2
63.5
9⁄16
14.3
5
127
10
3225737
3225737-LT
12 27⁄32
326
8 1⁄4
210
13 3⁄8
340
10
254
7⁄8 Sq.
22.2
6
152.4
1 9⁄32
32.5
2 1⁄2
63.5
9⁄16
14.3
5
127
Stems 416 Stainless Steel
12
3225738
3225738-LT
14 11⁄32
364
9 3⁄4
248
16 1⁄16
408
12
305
1 1⁄8 Sq.
28.6
6
152.4
1 9⁄32
32.5
3
76.2
9⁄16
14.3
5
127
Weco® Butterfly Valve
Specifications
2
3225730
3225730-LT
7 9⁄32
185
3
76.2
4 1⁄8
105
2 1⁄16
52.4
5⁄8 Sq.
15.9
4
101.6
1 1⁄32
26.2
1 5⁄8
41.3
7⁄16
11.1
3 1⁄4
82.6
Seat: Nitrile
E
G
45°
A
90°
F
D
B
C
I
dia., 3 holes thru;
on J dia. bolt circle
H
49
FMC Technologies, Inc.
Flowline Products & Services
Weco® Butterfly Valve Specifications
Sizes in.
2
2 1⁄2
3
4
5
6
8
10
12
14
16
18
20
24
Part No. 3225748 3225749 3225750 3222751 3225752 3225753 3225754 3225755 3225756 3255867 3255870 3255871 3255872 3255873
3225749- 3225750- 3222751- 3225752- 3225753- 3225754- 3225755- 3225756- 3255867- 3255870- 3255871- 3255872- 3255873P/N - LT 3225748LT
LT
LT
LT
LT
LT
LT
LT
LT
LT
LT
LT
LT
LT
A
7 9⁄32
7 25⁄32
8 1⁄16
9 5⁄32
9 21⁄32
10 5⁄32
11 19⁄32
12 27⁄32
14 11⁄32
14 31⁄32
17 7⁄16
18 7⁄16
19 7⁄16
23 3⁄4
185
198
205
233
245
258
295
326
364
380
443
468
494
603
B
3
3 11⁄32
3 5⁄8
4 1⁄4
4 13⁄16
5 5⁄16
7
8 1⁄4
9 3⁄4
10 3⁄8
11 15⁄16
12 15⁄16
13 15⁄16
17 1⁄8
76.2
84.9
92.1
108
122
135
178
210
248
264
303
329
354
435
C
6
7
7 1⁄2
9
10
11
13 1⁄2
16
19
20 3⁄4
23 1⁄4
25
27 1⁄4
32
152
178
191
229
254
279
343
406
483
527
591
635
692
813
D
2 1⁄16
2 1⁄2
3 1⁄16
4 1⁄16
5 1⁄16
6 1⁄16
8 1⁄16
10
12
13 1⁄4
15 9⁄32
17 9⁄32
19 1⁄4
23
52.4
63.5
77.8
103
129
154
205
254
305
337
388
439
489
584
5⁄8 Sq.
5⁄8 Sq.
5⁄8 Sq.
5⁄8 Sq.
5⁄8 Sq.
5⁄8 Sq.
7⁄8 Sq.
7⁄8 Sq.
E
1 1⁄8 Sq. 1 1⁄8 Sq.
2*
2*
2*
2.5**
15.9
15.9
15.9
15.9
15.9
15.9
22.2
22.2
28.6
28.6
50.8
50.8
50.8
63.5
F
4
4
4
4
4
4
6
6
6
6
8
8
8
8
101.6
101.6
101.6
101.6
101.6
101.6
152.4
152.4
152.4
152.4
203.2
203.2
203.2
203.2
G
1 1⁄32
1 1⁄32
1 1⁄32
1 9⁄32
1 9⁄32
1 9⁄32
1 9⁄32
1 9⁄32
1 9⁄32
1 9⁄32
3 3⁄16
3 3⁄16
3 3⁄16
4 3⁄8
26.2
26.2
26.2
32.5
32.5
32.5
32.5
32.5
32.5
32.5
81
81
81
111
H
1 5⁄8
1 3⁄4
1 3⁄4
2
2 1⁄8
2 1⁄8
2 1⁄2
2 1⁄2
3
3
4
4 1⁄2
5
6 1⁄16
41.3
44.5
44.5
50.8
54
54
63.5
63.5
76.2
76.2
101.6
114.3
127
154
7⁄16
7⁄16
7⁄16
7⁄16
7⁄16
7⁄16
9⁄16
9⁄16
9⁄16
9⁄16
17⁄32
17⁄32
17⁄32
21⁄32
I
11.1
11.1
11.1
11.1
11.1
11.1
14.3
14.3
14.3
14.3
13.5
13.5
13.5
16.7
J
3 1⁄4
3 1⁄4
3 1⁄4
3 1⁄4
3 1⁄4
3 1⁄4
5
5
5
5
6 1⁄2
6 1⁄2
6 1⁄2
6 1⁄2
82.6
82.6
82.6
82.6
82.6
82.6
127
127
127
127
165.1
165.1
165.1
165.1
5⁄8 -11
5⁄8 -11
5⁄8 -11
5⁄8 -11
3⁄4 -10
3⁄4 -10
3⁄4 -10
7⁄8 -9
7⁄8 -9
K
1-8
1-8
1 1⁄8 -7
1 1⁄8 -7
1 1⁄4 -7
L
4
4
4
8
8
8
8
12
12
12
16
16
20
20
102
102
102
204
204
204
204
305
305
305
406
406
508
508
M
4 3⁄4
5 1⁄2
6
7 1⁄2
8 1⁄2
9 1⁄2
11 3⁄4
14 1⁄4
17
18 3⁄4
21 1⁄4
22 3⁄4
25
29 1⁄2
121
140
152
191
216
241
299
362
432
476
540
578
635
750
Dimensions, in., mm
Weco® Butterfly Valve
Specifications
Model 22L
Body: Ductile Iron
Disc: Ductile Iron
* 2 inch diameter with 1⁄2 inch keyway
* 2.5 inch diameter with 5⁄8 inch keyway
Stems 416 Stainless Steel
Seat: Nitrile
E
I
2” - 12” size
G
dia., 4 holes thru;
on J dia. bolt circle
F
A
D
F
45°
90°
B
I
14” - 24” size
H
C
K
L
M
UNC tapped hole thru
places on
diameter bolt center
F
50
dia., 4 holes thru;
on J dia. bolt circle
FMC Technologies, Inc.
Flowline Products & Services
Weco® Butterfly Valve Specifications
Standard and Throttle Handles
A
B
C
D
E
Note:
C
12
3227947
3216224
3228019
2 3⁄4
69.9
19
483
4
102
1 11⁄16
42.9
6
152
Standard On-Off Handle
E
B
D
A
Weco® Butterfly Valve
Specifications
2-3
3234078
3234092
3235577
2 3⁄8
60.3
9 1⁄2
241
2 3⁄4
69.9
1 7⁄16
36.5
4
102
Standard for Models 12, 12N
Standard for Models 22, 22L
Throttling for all Models
Dimensions, in., mm
Valve Size, in.
4&6
8 & 10
3231336
3227946
3231337
3216208
3235578
3228018
2 1⁄2
3
63.5
76.2
10 7⁄8
15
276
381
2 3⁄4
4
69.9
102
1 11⁄16
1 11⁄16
42.9
42.9
4
6
102
152
Butterfly valve assemblies include a standard detent plate for on-off operations. Handle assemblies
for throttling service include a throttling detent plate to replace the standard detent plate on the
valve.
C
Gear Operators
Standard
Handwheel
Chain-wheel
Attachment
A
B
C
D
Dimensions,
in., mm
E
F
G
H
I
J
2-6
Valve Size, in.
8 & 10
12
E
14
16 - 20
24
3217838
3217839
3217840
3256506
3256507
3256508
3223689
3223690
3223691
3256839
3256840
CF
2⁄
54
1 1⁄16
27
6 1⁄2
165
5
127
4 3⁄4
121
1 5⁄8
41.3
6 5⁄16
160
3 1⁄2
88.9
3
76.2
4
102
2⁄
63.5
1 1⁄4
31.8
10
254
7 1⁄2
191
7
178
2 9⁄16
65.1
9 1⁄8
232
4 3⁄4
121
3 1⁄2
88.9
6 1⁄4
159
2⁄
63.5
1 1⁄4
31.8
10
254
7 1⁄2
191
7
178
2 9⁄16
65.1
11 5⁄8
295
4 3⁄4
121
3 1⁄2
88.9
6 1⁄4
159
3
76.2
1 1⁄2
38.1
14
356
15
381
7 3⁄4
197
3 1⁄8
79.4
15 1⁄4
387
5 5⁄8
143
3 1⁄2
88.9
6 1⁄2
165
3⁄
92.1
2 3⁄8
60.3
14
356
15
381
9 5⁄8
245
4 1⁄2
1114
15 1⁄4
387
5 3⁄4
146
3 1⁄2
88.9
9
229
5
127
2 1⁄2
63.5
14
356
15
381
11 5⁄8
295
4 5⁄8
118
17 1⁄4
438
9 1⁄2
241
3 1⁄2
88.9
10 1⁄4
260
18
12
12
58
Throttling Handle
J
E
F
C
G
H
D = number of turns to open
A
B
51
FMC Technologies, Inc.
Flowline Products & Services
Weco® Butterfly Valve Sizing Information
Non-Compressible
Fluids
EXAMPLE
Given:
A 6” WECO Butterfly Valve is to
be installed in a line handling 500
gpm of water.
Find:
Maximum pressure drop across the
valve when in the full opena nd
60˚ open positions.
Solution: This problem may be solved using
the nomogram or equation (C).
Weco® Butterfly Valve
Specifications
Use the following equations for sizing valves
handling liquids
(A)
(B)
(C)
First Using the Nomogram: Enter nomogram on
right side for a flow rate of 500 gpm. Draw horizontal
line until it intersects the 6” valve line. From this point
draw a vertical line until it intersects the 90˚ open line.
Project line horizontally to the left and read ∆Pof .061 psi.
Now, using same procedure as above, extend vertical line
to 60˚ open line and project horizontally to the left to
read ∆Pof .67 psi for 60˚ open.
Where: Q
= Flow in gallons per minute
(gpm)
∆P = (P1-P2) Pressure Drop (psi)
P1
P2
G
= Inlet Pressure (psia)
= Outlet Pressure (psia)
= Specific Gravity of Liquid
(Water = 1.0)
CV
= Valve Coefficient (Refer To
Appropriate Table)
Using Equation (C): Pressure Drop =
The equations listed above are the basis for the WECO
sizing nomogram. The nomogram is a method of
solving the equations above quickly and simply when
the service fluid is water.
Where: Cv
G
Q
= 2020 @ 90˚ open (from tables)
= 1.0 (Water)
= 500 gpm
2
∆P =
Now:
Cv
=
=
610 gpm @ 60˚ open, and
Cv Values
Resilient Seated BFV’S – All Models
52
Valve
Size, in.
2
2 1⁄2
3
4
5
6
8
10
12
14
16
18
20
24
GPM @ PSI @ Various Disc Angles
10°
20°
30°
40°
50°
60°
70°
80°
90°
1.59
2.33
3.50
6.16
9.56
13.7
24.2
37.3
53.7
61
81
125
161
305
6.17
9.06
13.6
23.9
37.2
53.3
94.3
145
209
166
477
535
723
921
14.2
20.9
31.4
55.1
85.6
123
217
334
481
650
960
1,120
1,500
2,000
26.3
38.6
57.9
102
158
227
401
617
888
1,300
1,700
1,960
2,700
3,640
44.5
65.3
98.0
173
268
384
679
1,040
1,500
2,100
2,900
3,500
4,800
6,175
70.6
104
156
274
426
610
1,080
1,660
2,390
3,500
4,920
5,800
7,900
10,350
105
156
240
423
656
941
1,660
2,560
3,690
5,220
7,000
8,000
12,500
17,500
135
215
342
625
970
1,420
2,500
3,830
5,620
8,000
11,000
15,000
18,500
24,000
159
266
457
860
1,320
2,020
3,540
5,580
8,080
13,000
17,000
19,000
27,000
35,000
FMC Technologies, Inc.
Flowline Products & Services
Weco® Butterfly Valve Sizing Information
100
80
60
40
30
20
10
20
10
8
6
4
3
2
30
EN
P
SO
E
1
0.8
0.6
0.4
0.3
0.2
C
DIS
0.1
0.08
0.06
0.04
0.03
0.02
AN
40 EGRE
ED
GL50
200000
100000
80000
60
70
80
90
Weco® Butterfly Valve
Specifications
FLOWRATE (GAL/MIN)
Nomogram for Sizing Weco Butterfly Valves
200
60000
40000
24
20000
20
18
16
14
0.01
0.008
0.006
0.004
0.003
0.002
0.001
10000
8000
6000
4000
PRESSURE DROP (LBS/SQ IN) - WATER AT 60 F
12
10
2000
8
6
1000
5
800
4
400
600
3
200
21/2
100
2
80
60
40
20
0.6 0.7 0.8
1.0
1.5
2
3
4
5
6
8
10
15
20
30
40
50
60
80
10
100
LINE VELOCITY (FT/SEC)
53
FMC Technologies, Inc.
Flowline Products & Services
Weco® Pneumatic Actuator Specifications
Weco® Pneumatic
Actuator Specifications
Pneumatic Actuators - Double Acting
Model
Sizes, in.
Part #
lb
Weight kg
in.
A
mm
in.
B
mm
in.
C
mm
in.
D
mm
in.
E
mm
in.
F
mm
in.
G
mm
in.
H
mm
in.
J
mm
in.
K
mm
L
in.
M
in.
mm
in.
mm
N
330
2-6
3235438
8 1⁄2
3.9
12 9⁄16
319
8 3⁄4
222
3 5⁄16
84.1
7 13⁄16
198
1 15⁄16
49.2
2 1⁄16
52.4
2
50.8
3 7⁄8
98.4
4 5⁄16
110
1 7⁄16
36.5
3⁄8
16 UNC
3 1⁄4
82.6
5⁄8
15.9
350
5-6
3237369
18
8.2
16 1⁄8
511
12 5⁄16
313
3 5⁄16
84.1
7 13⁄16
198
1 15⁄16
49.2
2 1⁄16
52.4
3 5⁄16
84.1
6 1⁄2
165.1
4 5⁄16
110
1 7⁄16
36.5
3⁄8
16 UNC
3 1⁄4
82.6
5⁄8
15.9
550
8 - 10
3236771
35
15.9
19 3⁄8
492
13 11⁄16
348
5 3⁄16
133
12 1⁄16
308
3 3⁄16
90.5
3 1⁄16
77.8
3 5⁄16
84.1
6 1⁄2
165
5 5⁄16
135
1 7⁄8
47.6
1⁄2
13 UNC
5
127
7⁄8
22.2
4 mounting holes
L on M bolt circle
both sides
550A
12
3237183
35
15.9
19 3⁄8
492
13 11⁄16
348
5 3⁄16
132
12 1⁄16
308
3 3⁄16
90.5
3 1⁄16
77.8
3 5⁄16
84.1
6 1⁄2
165
5 5⁄16
135
1 7⁄8
47.6
1⁄2
13 UNC
5
127
1 1⁄8
28.6
590
10
3237886
55
25
22
559
15 7⁄8
403
5 3⁄16
132
12 1⁄16
308
3 3⁄16
81
3 1⁄16
77.8
5 5⁄16
135
10 9⁄16
268
5 5⁄16
135
1 7⁄8
47.6
1⁄2
13 UNC
5
127
7⁄8
22.2
N square
N
F
E
H
D
G
1
⁄4 NPT
inlet
1
⁄4 NPT inlet double acting breather-spring return
B
A
54
C
K
J
590A
12
3237887
55
25
22
559
15 7⁄8
403
5 3⁄16
139
12 1⁄16
308
3 3⁄16
81
3 1⁄16
77.8
5 5⁄16
135
10 9⁄16
268
5 5⁄16
135
1 7⁄8
47.6
1⁄2
13 UNC
5
127
1 1⁄8
28.6
square broach
internal to accept
valve stem
FMC Technologies, Inc.
Flowline Products & Services
Weco® Pneumatic Actuator Specifications
Pneumatic Actuators - Spring Acting
L
in.
M
in.
mm
in.
mm
N
332
2-3
3237525
13
5.9
19 9⁄16
497
15 3⁄4
400
3 5⁄16
84.1
8 5⁄8
219
1 15⁄16
49.2
2 1⁄16
52.4
2
50.8
3 7⁄8
98.4
4 5⁄16
110
1 7⁄16
36.5
3⁄8
16 UNC
3 1⁄4
82.6
5⁄8
15.9
333
3-4
3237368
15
6.8
19 9⁄16
497
15 3⁄4
400
3 5⁄16
84.1
8 5⁄8
219
1 15⁄16
49.2
2 1⁄16
52.4
2
50.8
3 7⁄8
98.4
4 5⁄16
110
1 7⁄16
36.5
3⁄8
16 UNC
3 1⁄4
82.6
5⁄8
15.9
354
4
3237373
25
11.3
20 1⁄4
514
16 7⁄16
418
3 5⁄16
84.1
8 5⁄8
219
1 15⁄16
49.2
2 1⁄16
52.4
3 5⁄16
84.1
6 1⁄2
165
4 5⁄16
110
1 7⁄16
36.5
3⁄8
16 UNC
3 1⁄4
82.6
5⁄8
15.9
4 mounting holes
L on M bolt circle
both sides
355
5-6
3237515
31
14.1
20 1⁄4
514
16 7⁄16
418
3 5⁄16
84.1
8 5⁄8
219
1 15⁄16
49.2
2 1⁄16
52.4
3 5⁄16
84.1
6 1⁄2
165
4 5⁄16
110
1 7⁄16
36.5
3⁄8
16 UNC
3 1⁄4
82.6
5⁄8
15.9
596
8 - 10
3237865
93
42.2
30 1⁄8
765
24
610
5 1⁄16
129
13 1⁄8
333
3 3⁄16
81
3 1⁄16
77.8
5 5⁄16
135
10 9⁄16
268
5 5⁄16
135
1 7⁄8
47.6
1⁄2
13 UNC
5
127
7⁄8
22.2
N square
N
F
square broach
internal to accept
valve stem
E
H
D
G
1
597A
12
3237866
106
48.1
30 1⁄8
765.2
24
610
5 3⁄16
132
13 1⁄8
333
3 3⁄16
81
3 1⁄16
77.8
5 5⁄16
135
10 9⁄16
268
5 5⁄16
135
1 7⁄8
47.6
1⁄2
13 UNC
5
127
1 1⁄8
28.6
Weco® Pneumatic
Actuator Specifications
Model
Sizes, in.
Part #
lb
Weight kg
in.
A
mm
in.
B
mm
in.
C
mm
in.
D
mm
in.
E
mm
in.
F
mm
in.
G
mm
in.
H
mm
in.
J
mm
in.
K
mm
⁄4 NPT
inlet
1
⁄4 NPT inlet double acting breather-spring return
B
A
C
K
J
55
FMC Technologies, Inc.
Flowline Products & Services
Weco® Pneumatic Actuator Specifications
Pneumatic Vane Actuators
Fits 2” - 6” butterfly valves
Fits 2” - 6” butterfly valves
Model
Part #
Weight
A
B
Weco® Pneumatic
Actuator Specifications
C
56
D
E
F
G
lb
kg
in.
mm
in.
mm
in.
mm
in.
mm
in.
mm
in.
mm
in.
mm
200
3258068
10
4.54
8.66
220
5.56
141
7.00
178
4.62
117
2.31
58.7
3.41
86.6
2.00
50.8
F
A
B
E
C
1
⁄4 NPT
Inlet
3
⁄8 - 16 tapped hole x .56 deep
3 places on 3.25 dia. bolt circle
both sides
G
D
FMC Technologies, Inc.
Flowline Products & Services
Weco® Actuator Sizing Specifications
Required Operating Torques:
Dynamic Torque
There are three torques to be considered when
selecting the proper actuator for a butterfly
valve:
Dynamic torque is torque on the valve shaft
due to the fluid forces on the valve disc. This
torque is a function of valve diameter, pressure
drop, and a torque coefficient (Ct) which varies
with angle opening. Torque is calculated by the
equation:
(1)
(2)
(3)
Seating Torque - The torque required to
displace a resilient seat and effect shutoff
Bearing Torque - The torque required to
overcome friction forces on the valve shaft
bearing surfaces
Dynamic Torque - Torque due to fluid
forces which tend to close the valve.
T = CtD3 ∆P Where: T = Dynamic torque (in-lb)
D = Valve Dia (in.)
Ct = Dynamic torque coefficient
(see table below)
Angle
Open
Ct
Ct vs. Angle Open
0
10
20
30
40
50
60
70
80
90
0
.007 .014 .022 .033 .050 .087 .143 .215
0
Weco® Actuator
Sizing Information
The torques for resilient seated valves tabulated
in this section are the sum of (1) and (2) above
for various shutoff pressures. These tabulated
values include a safety factor large enough to
insure proper valve operation in most general
butterfly valve applications. Where unusual
service conditions exist (such as likelihood of
seat swelling, or low and high temperature seat
hardening), an additional safety factor may be
applicable.
57
FMC Technologies, Inc.
Flowline Products & Services
Weco® Actuator Sizing Information
Dynamic torque is not usually of major concern
in resilient seated butterfly valves unless the line
velocity exceeds 20 fps. If line velocity exceeds
this, a check should be made to insure that
actuator output exceeds the calculated dynamic
torque. Dynamic torque should be checked at
80° open for 0n-off applications.
Weco® Actuator
Sizing Information
Dynamic torque is of prime consideration in
situations where line velocity is not recovered
downstream of the valve. This situation exists
on installations where’ there is an unlimited
source and less than 6 diameters of pipe
downstream of the valve. If a valve discharges
to the atmosphere, the pressure drop across the
valve will be equal to the height of water above
the valve for all angles of valve opening. This
pressure drop must not exceed the pressure drop
Actuator Sizing For Tee Linkages:
For standard tee linkage applications where one
actuator operates two butterfly valves of the
same size with one valve opening as the other
valve closes, the actuator sizing will be the same
as for a single butterfly valve application. For
the actuator sizing for other tandem linkage
applications, consult the factory.
Low-Torque Valves:
Undercut discs are available for butterfly valve
applications that require lower seating torques.
For complete information, consult factory.
Actuators Sizing Torque for Weco® Butterfly Valves
Valve
Size,
in.
2
21⁄2
3
4
5
6
8
10
12
14
16
18
20
24
NOTE:
58
tabulated in Maximum ∆P vs. Angle Opening
Tables for any angle. If it does, provisions
must be made for velocity recovery by adding
downstream piping.
0 psi
0 kPa
90
10
130
15
200
23
350
23
535
60
770
87
1,350
153
2,100
237
3,000
339
3,680
416
4,880
551
6,230
704
7,770
878
11,100
1250
Seating Torque In Inch-lb (N*m), @ Various Line Pressures
50 psi
75 psi
100 psi
125 psi
345 kPa
517 kPa
690 kPa
862 kPa
90
92
94
96
10
10
11
11
130
134
138
142
15
15
15
16
200
206
212
218
23
23
24
25
350
366
382
398
40
41
43
45
535
566
597
628
60
64
67
71
770
823
876
929
87
93
99
105
1,350
1,475
1,600
1,725
153
167
181
195
2,100
2,340
2,580
2,820
237
264
292
319
3,000
3,400
3,800
4,200
339
384
429
475
4,240
4,790
5,350
5,900
479
541
605
667
5,730
6,580
7,430
8,280
647
744
840
936
7,460
8,690
9,920
11,150
843
982
1121
1260
9,380
11,000
12,610
14,230
1060
1243
1425
1610
14,010
16,920
19,830
22,740
1580
1910
2240
2570
For valves using Teflon seats, use torque value at highest standard value rating even for lower pressure applications.
Above figures are for values used in wet service, for dry service valves contact factory.
150 psi
1034 kPa
98
11
146
17
224
25
414
47
659
74
982
111
1,850
209
3,060
346
4,600
520
6,480
732
9,140
1030
12,390
1400
15,840
1790
25,650
2900
175 psi
1207 kPa
100
11
150
17
230
26
430
49
690
78
1,035
117
1,975
223
3,300
373
5,000
565
FMC Technologies, Inc.
Flowline Products & Services
Weco® Actuator Sizing Information
Minimum Air Pressure for Weco® Pneumatic Actuators Operating
Weco® Valves at 175 psi Rated Pressure
Actuator air pressure: psi, kPa
50
75
345
517
Valve Sizes
2” - 4”
2” - 5”
2” - 6”
2” - 6”
2” - 6”
2” - 6”
8”
8” - 10”
8” - 10”
—
—
12”
8” - 10”
8” - 10”
8” - 10”
12”
12”
12”
Double
Acting
Models
30
207
330
350
550
550A
590
590A
Actuator air pressure: psi (kPa) (Note 1)
30 (207)
40 (276)
60 (414)
70 (483)
40 (276)
50 (345)
70 (483)
80 (552)
Valve Sizes
2” - 21⁄2”
2 - 21⁄2”
2 - 21⁄2”
2 - 21⁄2”
—
—
—
2” - 4”
2” - 4”
2” - 4”
2” - 4”
2” - 4”
—
—
2” - 6”
2” - 6”
—
8” - 10”
8” - 10”
8” - 10”
—
—
12”
12”
Spring
Return
Models
332
333
354
355
596
597A
NOTES:
1.
Pressure above line for air to open, spring to close. Below line for air to close, spring to open.
2.
All of the above ratings are conservative for normal installations. Abnormally high torque conditions may necessitate increased actuator capability.
3.
Maximum actuator air pressure 120 psi, except 80 psi maximum pressure on Models 350, 590 and 590A.
Weco® Pneumatic Actuator Torque Ratings (note air pressure)
Displacement
cu. in.
cu. cm
Rated torque
in. lb
N*m
330
25
410
72
1180
120
1970
120
1970
355
5820
355
5820
1,150
130
1,150
130
5,500
622
5,500
622
5,500
622
5,500
622
350
550
550A
590
590A
Pressure
to achieve
rated torque
psi
kPa
80
552
30
207
80
552
80
552
30
207
30
207
Spring
Return
Models
Displacement
cu. in.
cu. cm
332
25
410
25
40
72
1180
72
1180
355
5820
355
5820
333
354
355
596
597A
Spring
closing
torque
in. lb
N*m
150
17
425
48
425
48
1,050
119
3,300
373
5,000
565
Spring
opening
torque
in. lb
N*m
300
34
850
96
850
96
2,100
237
6,600
746
10,000
1130
Air opening Air Closing
torque @ torque @
80 psi
80 psi
in. lb
in. lb
N*m
N*m
1,000
850
113
96
725
300
82
34
2,641
2,216
298
250
2,016
966
228
109
11,366
8,066
1280
911
9,666
4,666
1100
527
Weco® Actuator
Sizing Information
Double
Acting
Models
NOTES: All of the above ratings are for normal installations. Abnormally high torque conditions may necessitate increased actuator air pressure.
Weco Model 200
Vane-Type Pneumatic Actuator
Operating Conditions
Maximum Operating Pressure
120 psi (8.27 bar)
Maximum Housing Pressure
180 psi (12.41 bar)
Displacement
41 cu. in. (672 cu. cm.)/90° Stroke
Torque Data
Pressure
Torque
Output
psi
kPa
in. lb
mm kg
40
276
800
90
60
414
1,200
136
80
552
1,600
181
100
690
2,000
226
120
827
2,400
271
Minimum Actuator Pressure for Weco
Valves at 175 psi line pressure
Valve Size
Pressure
psi
kPa
2” - 4”
30
207
5”
45
310
6”
60
414
NOTES: All of the above ratings are for normal installations. Abnormally high torque
conditions may necessitate increased actuator air pressure.
59