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DBV Butterfly Valves& Ball Valves have been widely applied in cryogenic service, including Liquid Nitrogen, which is becoming the best unchangeable supplier.
Features
1. Sub-zero treatment as special -196℃treatment.
2. Permanent non-deformation as rigid body construction
3. Zero leakage sealing as excellent seat and seal design
4. No freeze-damage as long neck designed
5. Firm treated stem as Chrome plating or nitriding.
6. Self-pressure relief struction
7. Fugitive emissions control for flammable application.
8. Second sealing as grease.
International Designed:
Cryogenic Flange/Wafer Metal Seat Butterfly Valves( Wholly metal seat, Metal to Metal, Metal laminated with Graphite Seat,Mutilayer Seat) :
|
Design Standard |
GB |
BS EN |
API |
|
Technical requirements of Cryogenic Butterfly Valves for low temperature situation |
GB/T24925 |
BS6364 |
MSS SP-134 |
|
Design Standard |
GB/T12238 |
BS EN593 |
API609 |
|
Face-to-Face |
GB/T12221 |
BS EN558 |
API609 |
|
Connection End/Flanged |
GB/T9113 |
BS EN 1092-1 |
ASME B16.5 |
|
Test and Inspection |
GB/T13927 |
BS EN12266 |
API598 |
|
The end type and dimensions can be desinged and manufactured according to the buyers' requirements. |
|||
|
Main Parts and Materials: |
|
|
Part Name |
low Temp.Steel/Stainless Steel Material |
|
Body |
A352-LCB, A352-LCC, A350-LF2, A351-CF8, A351-CF8M, A182-F304,A182-F316 |
|
Disc |
A350-LF2+ENP, A182-F304,A182-F316 |
|
Stem |
A350-LF2,A276-304,A276-316 |
|
Seal ring/Seat |
PEEK,NYLON,DEVLON,PTFE,PCTFE |
|
Packing |
PFTE, Lw emission combined packing,Graphite |
|
Bolt/Nut |
A320-L7, A194-4/ A193-B8,A194-8 |
