WCB Body CF8 Disc Water-Groove PTFE Seat Lug-Type Wafer Butterfly Valve (Multiple Stem Options)
Product Introduction
This lug-type wafer butterfly valve combines WCB cast steel body with CF8 stainless steel disc, featuring innovative annular water-grooves. Three professional stem options are available: zinc-plated carbon steel, 416 stainless steel (2Cr13), and 304/316 stainless steel stems. The water-groove and PTFE seat create pressure-self-compensating sealing, especially suitable for fluids containing fine particles.
Key Features
Multi-Stem Selection
- Economy: Zinc-plated carbon steel stem (HV280-320)
- Standard: 416 stainless steel stem (2Cr13, HRC28-32)
- Premium: 304/316 stainless steel stem
01
Water-Groove Sealing
- 3 spiral grooves guide medium to clean sealing surface
- PTFE seat achieves full sealing at 0.3MPa
- 50% longer service life than flat seats
02
Enhanced Flow Performance
- CF8 disc with Ra≤1.6μm surface finish
- Flow resistance coefficient as low as 0.18
- Full bore design (98% flow capacity)
03
Robust Construction
- ISO 5211 compliant lug flanges
- Square tenon + pin disc fixation
- PN25 pressure tested
04
Competitive Advantages
Flexible Configuration
3 stem options for different needs.
01
Self-Cleaning
Grooves prevent particle accumulation.
02
Pressure-Activated Sealing
Better sealing under higher pressure.
03
Cost-Effective
WCB + CF8 offers best value.
04
ISO9001 Certified
Full-process quality control.
05
|
Nominal diameter DN |
Size (mm) |
Weight (kg) |
|||||||||||||
|
A |
B |
C |
D |
L |
H |
D1 |
N-Ø |
K |
E |
n1-Ø1 |
Ø2 |
G |
|||
|
(MM) |
(inch) |
|
|||||||||||||
|
50 |
2" |
161 |
80 |
42 |
52.9 |
32 |
88.38 |
125 |
4-M16 |
77 |
57 |
4-7 |
12.6 |
118 |
3.8 |
|
65 |
2.5" |
175 |
89 |
44.7 |
64.5 |
32 |
102.54 |
145 |
4-M16 |
77 |
57 |
4-7 |
12.6 |
137 |
4.2 |
|
80 |
3" |
181 |
95 |
45.2 |
78.8 |
32 |
61.23 |
160 |
8-M16 |
77 |
57 |
4-7 |
12.6 |
178 |
4.7 |
|
100 |
4" |
200 |
114 |
52.1 |
104 |
32 |
68.88 |
180 |
8-M16 |
92 |
70 |
4-10.5 |
15.77 |
206 |
9.0 |
|
125 |
5" |
213 |
127 |
54.4 |
123.3 |
32 |
80.36 |
210 |
8-M16 |
92 |
70 |
4-10.5 |
18.92 |
238 |
10.9 |
|
150 |
6" |
226 |
139 |
55.8 |
155.6 |
32 |
91.84 |
240 |
8-M20 |
92 |
70 |
4-10.5 |
18.92 |
266 |
14.2 |
|
200 |
8" |
260 |
175 |
60.6 |
202.5 |
45 |
112.89/76.35 |
295 |
8-M20/12-M24 |
115 |
88.9 |
4-14.5 |
22.1 |
329 |
18.2 |
|
250 |
10" |
292 |
203 |
65.6 |
250.5 |
45 |
90.59/91.88 |
350/355 |
12-M20/12-M24 |
115 |
88.9 |
4-14.3 |
28.45 |
393 |
26.8 |
|
300 |
12" |
337 |
242 |
76.9 |
301.6 |
45 |
103.52/106.12 |
400/410 |
12-M20/12-M24 |
140 |
107.95 |
4-14.3 |
31.6 |
462 |
40 |
|
350 |
14" |
368 |
267 |
76.5 |
333.3 |
45 |
89.74/91.69 |
460/470 |
16-M20/16-M24 |
140 |
107.95 |
4-14.3 |
31.6 |
515 |
56 |
|
400 |
16" |
400 |
309 |
86.5 |
389.6 |
51.2/72 |
100.48/102.42 |
515/525 |
16-M24/16-M27 |
197 |
158.75 |
4-20.6 |
33.15 |
579 |
96 |
|
450 |
18" |
422 |
328 |
105.6 |
440.51 |
51.2/72 |
88.38/91.51 |
565/585 |
20-M24/20-M27 |
197 |
158.75 |
4-20.6 |
38 |
627 |
122 |
|
500 |
20" |
480 |
361 |
131.8 |
491.6 |
64.2/82 |
96.99/101.68 |
620/650 |
20-M24/20-M30 |
197 |
156.25 |
4-20.6 |
41.15 |
696 |
202 |
|
600 |
24" |
562 |
459 |
152 |
592.5 |
70.2/82 |
113.42/120.46 |
725/770 |
20-M27/20-M33 |
276 |
215.9 |
4-22.2 |
50.65 |
821 |
270 |
Basic Information
|
Model NO. |
LTD71 / LTD371 / LTD671 / LTD971 |
Connection Form |
Wafer |
|
Structure |
Centre Sealing |
Seal Form |
Force Sealed |
|
Valve Stem |
Normal |
Work Pressure |
0.6MPa / 1.0MPa / 1.6MPa / 2.5MPa / Class150 |
|
Working Temperature |
Normal Temperature (-40°C < T < 120°C) |
Material of Seal Surface |
Soft Sealed / Hard Sealed |
|
Valve Body |
Casting |
Standard |
API 609 |
|
Application |
Industrial Usage, Water Industrial Usage, Household Usage |
Seated Material |
EPDM, NBR, PTFE, FKM |
|
Certification |
ISO9001 |
Flow Resistance |
Low Resistance |
|
Transport Package |
Export Wooden Crate |
Specification |
DN25 - DN1600 |
|
Origin |
China |
HS Code |
8481804090 |
|
Production Capacity |
50,000 pieces/Year |
|
|
Technical Parameters
|
Size |
DN32-DN600 |
DN650-DN2000 |
|
Working pressure |
16Bar |
10Bar |
|
Shell |
24Bar |
15Bar |
|
Seal |
18Bar |
11Bar |
|
Operating Temperature |
-45°C~+150°C |
|
|
Operating Environment |
Ballast and bilge system Chemical processing Desalination plants |
|
|
Driving Method |
Hand Lever Worm Gear Electric Pneumatic |
|
Executive Standards
|
Design Standard |
EN 593, MSS SP67, API 609, BS 5155 |
|
Inspection & Test |
API 598, ISO 5208, EN 12266 |
|
End Standard |
ANSI B16.1 CL. 125LB & B16.5 CL. 150LB |
|
AS 2129 Table D & E |
|
|
BS 10 Table D & E |
|
|
DIN 2501 (PN6, PN10, PN16) |
|
|
EN 1092 (PN6, PN10, PN16) |
|
|
ISO 2531 (PN6, PN10, PN16), 7005 (PN6, PN10, PN16) |
|
|
KS B / JIS B 1511 / 2210 (5K & 10K) |
|
|
MSS SP44 CL. 150LB |
|
|
AWWA C207 |
|
|
SABS 1123 Table 1000/3 & Table 1600/3 |
|
|
Face to Face |
ISO 5752, EN 558, MSS SP67, API 609, DIN 3202 |
|
Top Flange |
ISO 5211 |
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