Centerline Seal Butterfly Valve
With the disc seal center of butterfly valve and rotation center of stem overlapped,sealing load Will be produced between the sealing faces of seat and disc under certainmagnitude of interference. Thus to ensure effective seal of valve. Lined with rubber on body.This structure is applicable for me-dium and small-bore butterfly valves. Due to thedeformation under extrusion.during the process of opening and closing, disc is alwaysunder extrusion.So. the upper and lower valve shafts are seriously extruded, whichcan be bad to the service life of valve. And. the open-close moment of valve is rela-tively high. The defect is that disc and seat are always under extrusion, scra- tch, highresistance andserious adrasion. To overcome extrusion and scratch and to ensuregood seal, seat basically uses rubber or PTFE,or other elastic materials. However,temperature can be a problem. This is why butterfly valves are ,conventionally, notresistant to high temperature.
Usage: The valve has been widely used in the fields of petrochem, light industry, metallurgy, shipping, power, appling and draining water indrstry, pharmary etc. It flowing agents include all of corrosive and uncorrsive gas, liquid, seme-liquid, It can adjust and cut off the fluid.
Specification:
| STYLE |
D373H-6C/D973H-6C |
D373F-10C/D973F-10C |
D373X-25 /D973X-25 |
| Pressure |
0.6Mpa |
1.0Mpa |
2.5Mpa |
| Dic angel |
90° |
90° |
90° |
| Test pressure |
Shell test(water) |
0.9Mpa |
1.5Mpa |
3.8Mpa |
| Seal test (water) |
0.66Mpa |
1.1Mpa |
2.8Mpa |
| Temperature |
-29~425ºC |
-29~150ºC |
-10~80ºC |
| Suitable medium |
Water, Steam, Oil |
Main parts and materials
| Part Name |
Material |
| Body |
WCB |
| Retaining ring |
WCB |
| Stem |
2Cr13 |
| Seal Ring |
Stainless steel |
| Disc |
WCB/Q235 |
| Shipment |
|
| Delivery Time |
15~20 Days |
| Package |
Standard Exporting Plywood Case |
| Shipping Port |
Ningbo/Shanghai, China |
| Shipping Terms |
Exw, FOB, CFR, CIF, etc. |
| Payment Terms |
T/T, Western Union, PayPal, etc. |
| |
30% prepayment, 70% balance paid before shipping or against copy of BL |
| Warranty |
18 Months after leaving factory |
| Advantage |
OEM/ODM is applicable |
| Others |
We also manufacture Flange Ball Valve, Gate Valve, Globe Valve, Check Valve, Butterfly Valve & Y Strainer |
| OEM service |
| Having our own factory and professional technicians,we welcome OEM orders as well.We can design and produce the specific product you need according to your detail information. |
| After-sale Service |
| Our enthusiastic and friendly customer service representatives are ready to assist with any questions or problems. |
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