Zhejiang, China
Business Type:
Manufacturer/Factory & Trading Company
Business Range:
Agriculture & Food, Chemicals, Industrial Equipment & Components, Instruments & Meters, ...
Management System Certification:
ISO 9001, ISO 14001
Main Markets:
North America, South America, Europe, Southeast Asia/ Mideast, Africa
OEM/ODM Availability:
OEM/ODM Service
Sample Available

Dbb Ball Valve, Forged Steel Ball Valve, High Pressure Ball Valve manufacturer / supplier in China, offering Double Block and Bleed Ball Valve (GADBB41F), Cast Steel Split Body Standard Port Ball Valve (116), Cast Steel Split Body Reduced Ball Valve (GARQ41F) and so on.

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Double Block and Bleed Ball Valve (GADBB41F)

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Min. Order / Reference FOB Price
1 Piece US $1/ Piece
Port: Shanghai, China
Production Capacity: 10000PCS/Year
Payment Terms: T/T
Material: Stainless Steel
Connection Form: Flange
Driving Mode: Manual
Nominal Pressure: ANSI Class150~1500
Channel: Straight Through Type
Structure: Floating Ball Valve

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Basic Info

Model NO.: GADBB41F
Application: Industrial Usage
Size: 1/2"~48"
Pressure: 150lb~1500lb
Work Temperature: High Temperature
Flow Direction: Bidirectional
Applicable Medium: Seawater,Harsh Environment.
Trademark: Goole or others
Transport Package: Plywood Case
Specification: ISO 9001
Origin: Wenzhou
HS Code: 8481804090

Product Description

Double Block and Bleed ball valve  specification

Brand name : GOOLE VALVE
Model number : GADBB41F 
Nominal Diameter:DN15-DN1200
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. 
Double Block and Bleed Ball Valve (GADBB41F)

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