Operating Principle: A butterfly valve belongs to the elite family of quarter-turn valves, renowned for their efficiency and simplicity. In operation, this valve is ingeniously designed to be fully open or closed when the disc is rotated a mere quarter turn. The 'butterfly' component is a precision-engineered metal disc mounted expertly on a sturdy rod. When closed, the disc turns to form a perfect seal, completely obstructing the passageway. Conversely, when the valve is in the open position, the disc rotates a quarter turn, offering an almost unimpeded path for fluid flow. Moreover, the valve's design allows for it to be opened incrementally, providing the flexibility to regulate flow with precision. Product Application: This versatile valve is ideal for managing the flow of water, oil, air, and even certain corrosive liquids, showcasing its adaptability across various applications.
| DIN |
| Welded Butterfly Valve No.66010 |
| Size |
D1 |
D |
L |
L1 |
H |
T |
KXK |
| 1 |
2 |
| DN10 |
12 |
13 |
78 |
50 |
126 |
86 |
1.5 |
8x8 |
| DN15 |
18 |
19 |
78 |
50 |
126 |
86 |
1.5 |
8x8 |
| DN20 |
22 |
23 |
78 |
50 |
126 |
86 |
1.5 |
8x8 |
| DN25 |
28 |
29 |
78 |
50 |
126 |
86 |
1.5 |
8x8 |
| DN32 |
34 |
35 |
86 |
50 |
126 |
90 |
1.5 |
8x8 |
| DN40 |
40 |
41 |
90 |
50 |
126 |
92 |
1.5 |
8x8 |
| DN50 |
52 |
53 |
106 |
52 |
133 |
104 |
1.5 |
10x10 |
| DN65 |
70 |
|
124 |
56 |
144 |
113 |
2.0 |
10x10 |
| DN80 |
85 |
|
139 |
60 |
160 |
123.5 |
2.0 |
11x11 |
| DN100 |
104 |
|
159 |
64 |
160 |
133.5 |
2.0 |
11x11 |
| DN125 |
129 |
|
185 |
80 |
220 |
146.5 |
2.0 |
11x11 |
| DN150 |
154 |
|
215 |
90 |
220 |
161.5 |
2.0 |
11x11 |
| DN200 |
204 |
|
285 |
90 |
284 |
199 |
2.0 |
14x14 |
| 3A,SMS,ISO,DS |
| Welded ButterflyValve No.66011 |
| Size |
D1 |
D |
L |
L1 |
H |
KXK |
| 1/2' |
12.7 |
78 |
50 |
126 |
86 |
8x8 |
| 3/4° |
19 |
78 |
50 |
126 |
86 |
8x8 |
| 1 |
25.4 |
78 |
50 |
126 |
86 |
8x8 |
| 11/4 |
31.8 |
78 |
50 |
126 |
86 |
8x8 |
| 11/2 |
38.1 |
86 |
50 |
126 |
90 |
8x8 |
| 45 |
45 |
90 |
50 |
126 |
92 |
8x8 |
| 48 |
48 |
95 |
52 |
126 |
95 |
8x8 |
| 2° |
50.8 |
102 |
52 |
133 |
102 |
10x10 |
| 57 |
57 |
106 |
52 |
144 |
104 |
10x10 |
| 21/2 |
63.5 |
115 |
56 |
144 |
109 |
10x10 |
| 3" |
76.2 |
128 |
56 |
144 |
115 |
10x10 |
| 3.5" |
89 |
139 |
60 |
144 |
123.5 |
11x11 |
| 4° |
102 |
154 |
64 |
144 |
131 |
11x11 |
| 108 |
108 |
159 |
64 |
160 |
133.5 |
11x11 |
| 114 |
114.3 |
185 |
80 |
160 |
133.5 |
11x11 |
| 5 |
127 |
185 |
80 |
220 |
146.5 |
11x11 |
| 133 |
133 |
215 |
80 |
220 |
146.5 |
11x11 |
| 6 |
152.4 |
215 |
90 |
220 |
161.5 |
11x11 |
| 159 |
159 |
215 |
90 |
220 |
161.5 |
11x11 |
| 168.3 |
168.3 |
215 |
90 |
220 |
161.5 |
11x11 |
| 8" |
203.2 |
285 |
90 |
284 |
199 |
14x14 |
| 219 |
219 |
285 |
90 |
284 |
199 |
14x14 |
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| QUESTION? |
ANSWER |
| 1. Are you a factory? |
Yes, Welflow is a factory located in Wenzhou, Zhejiang, China. |
| 2. Do you have any requirements of MOQ? |
No limited to MOQ but the difference in unit price. |
| 3. Payment Terms |
Typically 30% T/T as deposit, 70% against copy of BL/ Or balance L/C at sight. |
| 4. Nearly Sea Port |
Ningbo or Shanghai Port |
| 5. Terms: |
FOB Ningbo/Shanghai, CIF, FCA, etc. |
| 6. Delivery Time: |
Typically, it is 30-35 days after receiving the deposit payment. However, almost all of the items we have stock in 304. |
| 7. Could you accept color Marks or Color Boxes? |
Yes, both are acceptable; we have experience with them. |
| 8. Could you accept marking our logo on the products? |
Yes, on the handle or the bodies, both are okay.
1. Laser Marking. (NO MOQ requirements)
2. Casting on the bodies (Has MOQ requirements) |
| 9. Do you have Material Certificates? |
If required, Each item will be laser marked with Heat NO and the material certificates. |
| 10. How do you deal with customer complaints, such as quality issues? |
This is an issue we take very seriously. As long as it is confirmed to be a quality issue, we will take full responsibility.
1. exchange or refund is acceptable. It mainly depends on how you need to deal with it. |
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