First, the product is summed up:
1, it is refined that seal and adopt the synthetic rubber , polytetrafluoroethylene (PTFE) to the sealed valve seat material of inserting type butterfly's valve softly and succeed, the sealing property is good.
2, of simple structure , two-way to seal , structure compactness , light and handy , economical and practical price.
3, 90 degrees of valves are turned round, open and close it rapidly, it is flexible and light to operate.
4, can choose the spare part of different materials , applicable many kinds of medium and pressure are required.
5, soft sealed centre type structure. Centre type soft sealed butterfly's valve, the valve stem is passed from the centre of butterfly's board, butterfly's valve connects the form and can be adopted to the inserting type , inserts the lug type , flange type only.
6, require according to different operating modes , can offer the special-purpose butterfly's valve of the antiseptic desulphurization , not sell to inserting type butterfly's valve , prevent the medium from selling the place and remain and corrodes awls to sell in the awl, cause the valve to be revealed.
Second, adopt the standard:
|
The flange connects size |
Length of structure |
The pressure testing |
|
DUB , ANSI , GB ( Suit the area of China) |
DIN , ANSI |
API 598 |
Third, main technical parameter:
|
Nominal and open directly |
50-1600 |
|
Nominal pressure PN ( Mpa) |
1.0/1.6 |
|
Test pressure |
The intensity testing |
1.5 |
|
Seal and test |
1.1 |
|
Suitable medium |
Water , steam , oil , coal gas , natural gas , sea water , sewage , corrosivity medium |
|
Suitable temperature |
-40 degrees Centigrade- 160 degrees Centigrade |
Fourth, main spare part material:
|
Name |
Material |
|
The valve has body |
Casting iron , nodular cast iron , WCB , stainless steel |
|
Valve board |
CF8M , nodular cast iron , aluminium bronze , lining with the rubber valve board |
|
Valve stem |
316 stainless steel , 416 stainless steel , covering with like this |
|
Valve seat |
NBR , EPDM , Viton , PTFE | |
