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 -196treatment.

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.

 DBV cryogenic valves 2017

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