
Product Features
The ductile iron wafer type butterfly valve is made of high-strength ductile iron, offering excellent pressure resistance and corrosion resistance, making it suitable for various industrial applications such as water treatment, petroleum, chemical, and HVAC systems. The wafer-type design ensures a compact structure and easy installation, saving pipeline space. The valve disc is precision-machined to provide superior sealing performance, effectively preventing media leakage. Additionally, the butterfly valve operates smoothly and can be equipped with a handle, gear operator, or pneumatic/electric actuator to meet different working condition requirements.
Product Advantages
The ductile iron wafer butterfly valve offers multiple advantages, including outstanding durability, lightweight design, and low maintenance costs. The ductile iron material provides higher mechanical strength and impact resistance, extending the valve's service life. The wafer-style structure reduces the need for flange connections, lowering installation costs while decreasing overall weight. The streamlined design ensures low flow resistance, improving medium flow efficiency. Moreover, the bidirectional sealing feature makes it suitable for different flow directions, ensuring long-term stable operation.


Product Introduction
The ductile iron wafer-type butterfly valve is a high-performance fluid control valve widely used in various industrial pipeline systems. Its core components are made of ductile iron and undergo precision machining, ensuring stable operation under high pressure, high temperature, and corrosive media conditions. The wafer-style installation makes it ideal for space-constrained pipeline layouts while allowing quick disassembly for maintenance. The valve seat can be made of EPDM, NBR, or PTFE to accommodate different media requirements. Whether manually operated or automated, the ductile iron wafer butterfly valve delivers reliable fluid regulation and shut-off functions.
Nominal diameter DN |
Size (mm) |
Weight (kg) |
||||||||||||||
A |
B |
C |
D |
L |
H |
D1 |
N-Ø |
K |
E |
n1-Ø1 |
Ø2 |
G |
D2-M |
|||
(MM) |
(inch) |
D7A1/37A1/67A1/97A1X-1.0/1.6 |
||||||||||||||
50 |
2" |
161 |
80 |
42 |
52.9 |
32 |
84.84 |
120 |
4-23 |
77 |
57.15 |
4-6.7 |
12.6 |
118 |
- |
2.5 |
65 |
2.5" |
175 |
89 |
44.7 |
64.5 |
32 |
96.2 |
136.2 |
4-26.5 |
77 |
57.15 |
4-6.7 |
12.6 |
137 |
- |
3.2 |
80 |
3" |
181 |
95 |
45.2 |
78.8 |
32 |
61.23 |
160 |
8-18 |
77 |
57.15 |
4-6.7 |
12.6 |
143 |
- |
3.6 |
100 |
4" |
200 |
114 |
52.1 |
104 |
32 |
70.8 |
185 |
4-24.5 |
92 |
69.85 |
4-10.3 |
15.77 |
156 |
- |
4.9 |
125 |
5" |
213 |
127 |
54.4 |
123.3 |
32 |
82.28 |
215 |
4-23 |
92 |
69.85 |
4-10.3 |
18.92 |
190 |
- |
7 |
150 |
6" |
226 |
139 |
55.8 |
155.6 |
32 |
91.08 |
238 |
4-25 |
92 |
69.85 |
4-10.3 |
18.92 |
212 |
- |
7.8 |
200 |
8" |
260 |
175 |
60.6 |
202.5 |
45 |
112.89/76.35 |
295 |
4-25/4-23 |
115 |
88.9 |
4-14.3 |
22.1 |
268 |
- |
13.2 |
250 |
10" |
292 |
203 |
65.6 |
250.5 |
45 |
92.4 |
357 |
4-29 |
115 |
88.9 |
4-14.3 |
28.45 |
325 |
- |
19.2 |
300 |
12" |
337 |
242 |
76.9 |
301.6 |
45 |
105.34 |
407 |
4-29 |
140 |
107.95 |
4-14.3 |
31.6 |
403 |
- |
32.5 |
350 |
14" |
368 |
267 |
76.5 |
333.3 |
45 |
91.11 |
467 |
4-30 |
140 |
107.95 |
4-14.3 |
31.6 |
436 |
- |
41.3 |
400 |
16" |
400 |
309 |
86.5 |
389.6 |
51.2/72 |
100.47/102.42 |
515/525 |
4-26/4-30 |
197 |
158.75 |
4-20.6 |
33.15 |
488 |
- |
61 |
450 |
18" |
422 |
328 |
105.6 |
440.51 |
51.2/72 |
88.39/91.51 |
565/585 |
4-26/4-30 |
197 |
158.75 |
4-20.6 |
38 |
539 |
- |
79 |
500 |
20" |
480 |
361 |
131.8 |
491.6 |
64.2/82 |
96.99/101.68 |
620/650 |
4-26/4-33 |
197 |
158.75 |
4-20.6 |
41.15 |
539 |
- |
128 |
600 |
24" |
562 |
459 |
152 |
592.5 |
70.2/82 |
113.42/120.46 |
725/770 |
4-30/4-36 |
276 |
215.9 |
4-22.2 |
50.65 |
816 |
- |
188 |
700 |
28" |
624 |
520 |
163 |
695 |
66/82 |
109.65 |
840 |
20-30/24-36 |
300 |
254 |
8-18.0 |
55/63.35 |
895 |
4-M33 |
284 |
800 |
32" |
672 |
591 |
188 |
794.7 |
66/82 |
124 |
950 |
24-33/24-39 |
300 |
254 |
8-18.0 |
55/63.35 |
1015 |
- |
368 |
900 |
36" |
720 |
656 |
203 |
864.7 |
118 |
117.57 |
1050 |
28-33 |
300 |
254 |
8-18.0 |
75 |
1115 |
4-M30 |
713 |
1000 |
40" |
800 |
721 |
216 |
965 |
142 |
129.89 |
1160 |
28-36 |
300 |
254 |
8-18.0 |
85 |
1230 |
4-M33 |
864 |
1200 |
48" |
900 |
780 |
254 |
1020 |
180 |
141.33 |
1340 |
32-39 |
300 |
254 |
8-18.0 |
95 |
1450 |
4-M36 |
1130 |
Basic Information
Model NO. |
D71X / D371X / D671X / D971X |
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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