It all flows from expertise.
8300 Series
High Performance Butterfly Valves
Contents
Introduction
01
Engineering data
02 – 03
Dimensions
04
Flow Coefficients Cv
04 – 05
V1.1
SERIES
Severn’s 8300 Double Offset High Performance
Butterfly Valve Series enables the disc to
achieve a uniform 360° seal contact and to
move into and break out from the seat with
the minimum of wear.
The seat design ensures low seating and
breakout torque, resulting in smaller actuators
and improved economy when selection from
the various forms of actuation available.
Across the size range, the 8300 Series has
a variety of distinct features, all designed to
reduce wear and control effectively to support
durable performance, ensuring you meet
your core imperatives of safe operations and
minimum downtime.
8300 Series High Performance Butterfly Valves V1.1
01
The 8300 series valve is available in 3 basic body styles, Wafer, Lugged and Double Flanged
(long and short pattern) special face to face and BWE options are available on request.
Valve body style options
Engineering data
High performance – Design features
Self-energising seat at low pressure
Pressure energized at high pressure
compensating for wear and temperature
Seat energizer fully isolated by PTFE envelope
Cavities minimised to avoid ingress of particulates
Temperature ratings from -196°C to +230°C
Shut off pressures up to 100 Bar
The quarter turn design ensures ease of
actuation for both control and on/off duties
Standard face to face dimensions to API 609
/ISO 5752 and B16.10 with non-standard
dimensions available on request.
Valve size range – 2in (50mm) - 48in (1200mm)
with larger sizes available on request
Body pressure ratings up to 2500lb
Can be manufactured in all commercially
available metals in cast, forged or plate form.
Non-graphite options available for
seawater service
Anti-blowout stem as standard on #300
ratings and above
Performance benefits
The double eccentric action enables the disc to achieve
a uniform 360° seal contact and to move into and break
out from the seat with the minimum of wear
The seat design ensures low seating and breakout torque
Anti cavitation trims and baffle plates available
to reduce cavitation and noise issues
Reliable leakage performance bubble
tight shutoff
8300 Double Offset Butterfly Section
8300 Double Offset Cryo
Double Flanged
Wafer
Lugged
02
V1.1 8300 Series High Performance Butterfly Valves
End connection sizes/types
2in (50mm) - 48in (1200mm),
larger sizes available on request.
Wafer, Lugged, Flanged
or Butt Weld Ends. For other
styles please contact us.
Valve body ratings
ASME 150 – ASME 2500
EN 1092 PN 10 to PN 400
Body configurations
Wafer, Lugged, Double Flanged
and Butt Weld End
Body face to face dimensions
API 609/ISO 5752 and B16.10
with non-standard dimensions
available on request.
Bonnet styles
Standard and cryogenic
Standard valve packing
Teflon and graphite
Trim options
Anti cavitation, baffles,
half baffles and hard faced
Seat leakage class
Up to ANSI/FCI 70.2.
Class IV to VI, API 598
Zero available on request
Construction materials
A wide range of standard materials are
available for both the valve pressure
containing parts and trim, including
carbon and stainless steel, duplex/
super duplex, aluminum bronze,
titanium and high nickel alloys. Stellite,
and other hard facings/coatings
are available. For further details on
materials please contact us.
Paint
A wide range of paint finishes are
available including enamel, alkyd
gloss and various epoxy finishes.
Clean build
Severn maintains high clean build
standards-utilising clean build areas
including Oxygen clean and a Ultra
High Purity clean room.
Actuation
We offer a wide range of actuators
including – pneumatic scotch
yoke and rack and pinion, electric,
hydraulic, electro hydraulic and
manually operated.
Instruments
A wide range of control instruments
are available from Severn including
positioners, air-filter regulators,
volume boosters, solenoid valves,
and lock-up valves.
Engineering data (continued)
Seat options available
High
Performance
Seal
HP Cryo
Seal
Applications
Offshore Platform and FPSO
Seawater lift pump back
pressure control
Ballast water flow control
Hydrocarbon gas flow control
Fire main bypass control
Refinery
Flare gas control
Flow Balancing for Fiscal Metering
Power Generation
LP and MP Steam control
Cooling water flow and back
pressure control
Cooling Tower de-icing
LNG Storage and Transportation
Loading and unloading flow control
LNG Recirculation control
LNG Tank flow control
Urea, Ammonia and Fertilizer Production
Synthesis gas flow control
Urea flow control
HP steam pressure reduction
Desalination
Seawater make up level control
Brine Recycle
Brine blow down
Condensate back pressure control
Distillate back pressure and flow control
Anti-Cavitation
Full Baffle
Half Baffle
Trim options available
8300 Series High Performance Butterfly Valves V1.1
03
SIZE
TOV 150#,
STANDARD TRIM
DEGREES OPEN
10
20
30
40
50
60
70
80
90
50mm (2")
1.4
5.5
13.0
23.0
36.0
55.0
75.0
97.0
101.0
65mm (2.5")
2.0
8.0
20.0
34.0
52.0
78.0
108.0
140.0
145.0
80mm (3")
3.0
13.0
30.0
53.0
81.0
123.0
168.0
217.0
225.0
100mm (4")
6.0
24.0
59.0
106.0
159.0
243.0
331.0
428.0
446.0
150mm (6")
16.0
64.0
149.0
267.0
402.0
595.0
802.0
1049.0
1092.0
200mm (8")
27.0
120.0
280.0
499.0
753.0
1112.0
1536.0
1962.0
2043.0
250mm (10")
51.0
205.0
477.0
851.0
1283.0
1895.0
2559.0
3343.0
3482.0
300mm (12")
70.0
281.0
657.0
1170.0
1764.0
2606.0
3519.0
4596.0
4789.0
350mm (14")
81.0
353.0
850.0
1530.0
2307.0
3520.0
4800.0
6399.0
6788.0
400mm (16")
119.0
478.0
1144.0
2073.0
3126.0
4759.0
6501.0
8668.0
9194.0
450mm (18")
154.0
616.0
1484.0
2672.0
4029.0
6145.0
8379.0
11044.0
11286.0
500mm (20")
186.0
745.0
1797.0
3235.0
4877.0
7438.0
10143.0
13524.0
14275.0
600mm (24")
284.0
1134.0
2734.0
4922.0
7338.0
11309.0
15435.0
20580.0
21830.0
SIZE
TOV 150#
ANTI-CAV TRIM
DEGREES OPEN
10
20
30
40
50
60
70
80
90
50mm (2")
0.9
3.6
8.5
15.0
23.4
35.8
48.8
63.1
65.7
65mm (2.5")
1.3
5.2
13.0
22.1
33.8
50.7
70.2
91.0
94.3
80mm (3")
2.0
8.5
19.5
34.5
52.7
80.0
109.2
141.1
146.3
100mm (4")
3.9
15.6
38.4
68.9
103.4
158.0
215.2
278.2
289.9
150mm (6")
10.4
41.6
96.9
173.6
261.3
386.8
521.3
681.9
709.8
200mm (8")
17.6
78.0
182.0
324.4
489.5
722.8
998.4
1275.3
1328.0
250mm (10")
33.2
133.3
310.1
553.2
834.0
1231.8
1663.4
2173.0
2263.3
300mm (12")
45.5
182.7
427.1
760.5
1146.6
1693.9
2287.4
2987.4
3112.9
350mm (14")
52.7
229.5
552.5
994.5
1499.6
2288.0
3120.0
4159.4
4412.2
400mm (16")
77.4
310.7
743.6
1347.5
2031.9
3093.4
4225.7
5634.2
5976.1
450mm (18")
100.1
400.4
964.6
1736.8
2618.9
3994.3
5446.4
7178.6
7335.9
500mm (20")
120.9
484.3
1168.1
2102.8
3170.1
4834.7
6593.0
8790.6
9278.8
600mm (24")
184.6
737.1
1777.1
3199.3
4769.7
7350.9
10032.8
13377.0
14189.5
SIZE
TOV 300#,
STANDARD TRIM
DEGREES OPEN
10
20
30
40
50
60
70
80
90
50mm (2")
1.3
5.5
12.0
22.0
33.0
51.0
70.0
93.0
99.0
65mm (2.5")
2.0
7.0
18.0
32.0
48.0
74.0
100.0
133.0
142.0
80mm (3")
3.0
12.0
28.0
50.0
75.0
115.0
156.0
208.0
221.0
100mm (4")
6.0
23.0
54.0
97.0
146.0
223.0
304.0
406.0
430.0
150mm (6")
14.0
58.0
135.0
240.0
362.0
535.0
722.0
972.0
1031.0
200mm (8")
26.0
106.0
247.0
441.0
664.0
981.0
1324.0
1784.0
1891.0
250mm (10")
44.0
178.0
413.0
736.0
1110.0
1640.0
2214.0
2981.0
3162.0
300mm (12")
61.0
245.0
572.0
1020.0
1538.0
2273.0
3073.0
4133.0
4384.0
350mm (14")
73.0
293.0
707.0
1272.0
1918.0
2926.0
3991.0
5321.0
5644.0
400mm (16")
98.0
392.0
944.0
1699.0
2562.0
3908.0
5329.0
7693.0
8160.0
450mm (18")
125.0
499.0
1204.0
2168.0
3268.0
4986.0
6799.0
9065.0
9615.0
500mm (20")
155.0
618.0
1491.0
2684.0
4048.0
6174.0
8420.0
11226.0
11979.0
600mm (24")
218.0
869.0
2096.0
3773.0
5690.0
8678.0
11834.0
15778.0
16836.0
Dimensions
Flow Coefficients Cv
SIZE
TOV 150#
C1
C2
50mm (2")
125
108
43
108
80mm (3")
142
125
46
114
100mm (4")
162
145
54
127
150mm (6")
186
185
56
140
200mm (8")
217
265
64
152
250mm (10")
265
270
71
165
300mm (12")
320
315
80
178
350mm (14")
335
340
92
190
400mm (16")
372
350
102
216
450mm (18")
405
385
114
222
500mm (20")
420
445
127
229
600mm (24")
505
495
154
267
SIZE
TOV 300#
C1
C2
50mm (2")
130
113
43
108
80mm (3")
152
135
48
114
100mm (4")
198
190
54
127
150mm (6")
215
215
59
140
200mm (8")
315
245
71
152
250mm (10")
270
253
83
165
300mm (12")
308
291
92
178
350mm (14")
342
325
117
190
400mm (16")
372
355
133
216
450mm (18")
408
390
149
222
500mm (20")
442
421
159
229
600mm (24")
416
495
181
267
04
V1.1 8300 Series High Performance Butterfly Valves
SIZE
TOV 300#
ANTI-CAV TRIM
DEGREES OPEN
10
20
30
40
50
60
70
80
90
50mm (2")
0.8
3.6
7.8
14.3
21.5
33.2
45.5
60.5
64.4
65mm (2.5")
1.3
4.55
11.7
20.8
31.2
48.1
65
86.45
92.3
80mm (3")
2.0
7.8
18.2
32.5
48.8
74.8
101.4
135.2
143.7
100mm (4")
3.9
15.0
35.1
63.1
94.9
145.0
197.6
263.9
279.5
150mm (6")
9.1
37.7
87.8
156.0
235.3
347.8
469.3
631.8
670.2
200mm (8")
16.9
68.9
160.6
286.7
431.6
637.7
860.6
1159.6
1229.2
250mm (10")
28.6
115.7
268.5
478.4
721.5
1066.0
1439.1
1937.7
2055.3
300mm (12")
39.7
159.3
371.8
663.0
999.7
1477.5
1997.5
2686.5
2849.6
350mm (14")
47.5
190.5
459.6
826.8
1246.7
1901.9
2594.2
3458.7
3668.6
400mm (16")
63.7
254.8
613.6
1104.4
1665.3
2540.2
3463.9
5000.5
5304.0
450mm (18")
81.3
324.4
782.6
1409.2
2124.2
3240.9
4419.4
5892.3
6249.8
500mm (20")
100.8
401.7
969.2
1744.6
2631.2
4013.1
5473.0
7296.9
7786.4
600mm (24")
141.7
564.9
1362.4
2452.5
3698.5
5640.7
7692.1
10255.7
10943.4
SIZE
TOV 600#,
STANDARD TRIM
DEGREES OPEN
10
20
30
40
50
60
70
80
90
50mm (2")
1.4
5.0
13.0
23.0
35.0
51.0
70.0
90.0
93.0
65mm (2.5")
2.0
8.0
19.0
33.0
51.0
73.0
100.0
130.0
133.0
80mm (3")
3.1
12.0
29.0
52.0
79.0
114.0
156.0
202.0
208.0
100mm (4")
5.8
23.0
54.0
98.0
147.0
213.0
290.0
375.0
387.0
150mm (6")
14.7
59.0
137.0
247.0
372.0
538.0
734.0
950.0
979.0
200mm (8")
26.8
107.0
250.0
451.0
679.0
983.0
1341.0
1734.0
1788.0
250mm (10")
41.2
165.0
384.0
692.0
1044.0
1411.0
2060.0
2665.0
2747.0
300mm (12")
58.4
233.0
545.0
981.0
1479.0
2140.0
2918.0
3774.0
3891.0
350mm (14")
73.0
292.0
682.0
1100.0
1838.0
2680.0
3655.0
4727.0
4873.0
400mm (16")
94.2
376.9
880.3
1419.9
2372.5
3459.3
4717.8
6101.5
6290.0
450mm (18")
127.6
510.5
1192.4
1923.3
3213.6
4685.7
6390.4
8264.7
8520.0
500mm (20")
141.0
563.9
1317.0
2124.2
3549.3
5175.2
7058.0
9128.1
9410.0
600mm (24")
163.3
653.2
1525.5
2460.5
4111.3
5994.7
8175.6
10573.4
10900.0
SIZE
TOV 600#
ANTI-CAV TRIM
DEGREES OPEN
10
20
30
40
50
60
70
80
90
50mm (2")
0.9
3.3
8.5
15.0
22.8
33.2
45.5
58.5
60.5
65mm (2.5")
1.3
5.2
12.4
21.5
33.2
47.5
65.0
84.5
86.5
80mm (3")
2.0
7.8
18.9
33.8
51.4
74.1
101.4
131.3
135.2
100mm (4")
3.8
15.0
35.1
63.7
95.6
138.5
188.5
243.8
251.6
150mm (6")
9.6
38.4
89.1
160.6
241.8
349.7
477.1
617.5
636.4
200mm (8")
17.4
69.6
162.5
293.2
441.4
639.0
871.7
1127.1
1162.2
250mm (10")
26.8
107.3
249.6
449.8
678.6
917.2
1339.0
1732.3
1785.6
300mm (12")
38.0
151.5
354.3
637.7
961.4
1391.0
1896.7
2453.1
2529.2
350mm (14")
47.5
189.8
443.3
715.0
1194.7
1742.0
2375.8
3072.6
3167.5
400mm (16")
61.2
245.0
572.2
922.9
1542.1
2248.5
3066.6
3966.0
4088.5
450mm (18")
83.0
331.8
775.1
1250.1
2088.8
3045.7
4153.8
5372.1
5538.0
500mm (20")
91.6
366.5
856.0
1380.7
2307.0
3363.9
4587.7
5933.2
6116.5
600mm (24")
106.1
424.5
991.6
1599.3
2672.3
3896.5
5314.1
6872.7
7085.0
Flow Coefficients Cv (continued)
C1
Wafer
Double Flanged
C1
Lugged
C2
8300 Series High Performance Butterfly Valves V1.1
05
Our policy is one of continuous improvement and we reserve the right to modify these specification details without notice.
www.severnvalve.com
Head Office – Brighouse UK
Heywoods Industrial Park,
Birds Royd Lane,
Brighouse, HD6 1NA.
T: +44 (0)845 6070 710
E: sales@severnvalve.com
Gloucester UK
Olympus Park,
Quedgeley,
Gloucester, GL2 4NF.
T: +44 (0)845 223 2040
E: sales@severnvalve.com
Chennai India
F96 & F97, SIPCOT Industrial Park,
Irrungattukottai, Chennai,
Tamilnadu, India - 602 117.
T: +91 44 4710 4200
E: sales@severnvalve.com
V1.1