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Yongjia Goole Valve Co., Ltd.

Ball Valve, Dbb Ball Valve, Dbb Valve manufacturer / supplier in China, offering Double Block & Bleed Flanged Floating Dbb Ball Valve (DBBQ41F), Level Type Steam Pressure Reducing Valve (GAY45Y), Threaded Steam Trap (GATD42) and so on.

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Supplier Homepage Product Ball Valve DBB Ball Valve Double Block & Bleed Flanged Floating Dbb Ball Valve (DBBQ41F)

Double Block & Bleed Flanged Floating Dbb Ball Valve (DBBQ41F)

FOB Price: US $1 / Piece
Min. Order: 1 Piece
Min. Order FOB Price
1 Piece US $1/ Piece
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Port: Shanghai, China
Production Capacity: 10, 000PCS/Year
Payment Terms: L/C, T/T, Western Union

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Basic Info
  • Model NO.: DBBQ41F
  • Connection Form: Flange
  • Nominal Pressure: ANSI CLASS 150-900
  • Structure: Floating Ball Valve
  • Function: Blow-Down Valve
  • Application: Industrial Usage
  • Transport Package: Plywood Case
  • Origin: Wenzhou, Zhejiang, China
  • Material: CS/Ss
  • Driving Mode: Manual
  • Channel: Straight Through Type
  • Type: Floating Ball Valve
  • Temperature: Low Temperature
  • Trademark: GOOLE, OEM
  • Specification: CE, SGS, TUV
  • HS Code: 8481804090
Product Description

Double Block and Bleed ball valve  specification
Brand name : GOOLE VALVE
Model number : DBB41F 
Nominal Diameter:DN15-DN1200
Pressure:150LB-1500LB
Work temperature: High  temperature
Body material:SS,CS , FS ,A105, LCC, LCB, CF8, CF3M,etc.
Type of Connection:Flange
Driving means:Manual,worm gear.etc.
Flow direction:bidirectional
Applicable medium:Seawater,all kinds of harsh environment
 
Double Block and Bleed ball valve Applicable Specification
Design standard: ANSI B16.34     GB/T12237
Physical dimension: ANSI B16.10    GB/T12221
Flanges dimension: ANSIB16.10     GB/T15188.1
Test and inspection: API598        GB/T909
 
Double Block and Bleed ball valve structure characteristics
1. The double block and bleed valve have evolved to replace and add the process of bolting together individual valves to make the valves in one body .it saved a lot of space and material.
2. Special designs including injecting quills ,sample probes ,double block and single block, in-built check valves and seat wipers.
3. Dual isolation is necessary requirement when maintenance is taking place down stream of the first isolation valve. Cavity venting is provided by either a ball or globe OS&Y vent valve so that trapped pressure between the two isolation valves is safely vented.
4.  These valves have also evolved to encompass the function of chemical injection (using a suitable quill) and sample points .In-built check valves are often integrated in these valves.
5. Fire Safe according to BS6755/API 6FA/API 607, since each sealing point is provided by a secondary fire-safe seal in graphite. Valve soft seats also are provided with secondary metal-to metal seal in case of fire.
6. Valve design can be either Trunnion or floating type ,anti blow -out stem and typically SPE seat design .Drain port is normally provide with a floating ball valve ,to be fitted with final user drain line .valve seats can be soft or metal to metal hard-faced. 
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