Purpose and characteristic
Soft sealing butterfly valve is suitable for water supplying and draining .gas pipe as adjust flux and cut off medium in foodstuff,pharmacy ,chemical industry,petroleum,electric power,light textile,paper making etc with temperature<120C,nominal pressuer<1.6Mpa.The main characteristic such as:
1.Novel and eaonable design,special structure,light and start and stop rapidly.
2.Tiny operative moment,operation conveietly and skillfully.
3.lnstallation in any position,easy to maintain
4.lt can exchange sealed comopnent,antisepsis,reliable hermetical capacity and seal in double direction with zero leakage.
5.Hermetical material aging resistant,antisepsis,and long service life etc.
Adoption standard:
D£ºGB£¯T12238-1989£»
lS0 10631-1994or BS EN593-1998
Flange connection dimension:GB/T17241£®6-1998£º
IS0 7005-2 or BSEN 1092-2002
Structure length: GB/T1 2221-1989£º
lS0 5752-1988 or BS EN558-1
Pressure test£ºGB/T13927-1 992£»JB/T9092-1999£»
lS0 5028-1993 or BS 6755-l-1986
Main technology parameter
Nominal diameter |
DN(mm) |
50¡«2000 |
||
Nominal pressuer |
PN(MPa) |
0.6 |
1.O |
1.6 |
Test pressurePs(MPa) |
Shell test |
0.9 |
1.5 |
2.4 |
Seal test |
O.66 |
1.1 |
1.76 |
|
Appropriate medium |
Air,Water,Sewage,Steam,Coal gas,il etc. |
|||
Drive modality |
Hand.Worm wheel drive ,Pneumatic drive.Electric drive |
|||
Material for main parts
Parts name |
Material |
Body |
Ductile castiron,Cast steel,Alloy steel,Stainless steel |
Disc |
Gray cast iron,Ductile cast steel,Cast steel,Stainless steeland ad hoc material |
Seal ring |
Manifold rubber |
Stem |
Stainless steel |
Packing |
OType ring Flexiblegraphite |
Butterfly valve seal material choice and appropriate temperature
Material variety |
Neoprene |
Styrene rubber |
Ethane propyl rubber |
PTFE |
Silicon rubber |
Fluorine rubber |
Code name |
¡Á 0rJ |
XAorJA |
XBorJB |
xC¡¢JC 0rF |
XDorJD |
¡Á E orJE |
Resistance highest temperature |
82¡æ |
93¡æ |
150¡æ |
232¡æ |
250¡æ |
204¡æ |
Resistance lowest temperature |
-40¡æ |
-40¡æ |
-40¡æ |
-268¡æ |
-70¡æ |
-23¡æ |
Appropriate working temperature |
¡Ü65¡æ |
¡Ü80¡æ |
¡Ü120¡æ |
¡Ü 00¡æ |
¡Ü200¡æ |
¡Ü180¡æ |
