Stainless Steel Forged Double Bleed and Double Block (DBB) Ball Valve

• Material: Stainless Steel
• Connection Form: Thread
• Driving Mode: Manual
• Nominal Pressure: 150lb to 2500lb
• Channel: Straight Through Type
• Structure: Floating Ball Valve
• Type: Floating Ball Valve
• Function: Blow-Down Valve
• Temperature: Normal Temperature
• Application: Industrial Usage, Water Industrial Usage
• Size: 1/2" to 48"
• Class: 150lb to 2500lb
• Certificates: API 6D, Ce, ISO9001
• Application Fields: Metallurgy,Light Industrial,Electric Power,Petroch
• Delivery Detail: 20~45 Days According to The Specific Quantities
• Transport Package: Standard Export Wooden Case
• Specification: API6D, ISO9001, CE, SGS, etc
• Trademark: NIPO/OEM
• Origin: Wenzhou, Zhejiang, China
• HS Code: 8481804090
• Production Capacity: 50000PCS/Year

Product Description

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. 

Design Features:

The ball valve are designed in accordance with ISO14313,API 6D,BS 5351,GB/T 19672;
Simple structure with good sealing performance and small torque;
Full bore and reduced bore design with the minimum flow resistance (zero actually);
Emergency sealant injection;
Cavity pressure self relief;
Independent ball and stem;
Low emission packing;
Fire safe, anti-static and anti-blowout stem design;
Valve seat function DBB, DIB-1, DIB-2;
Optional extended bonnet.
Double Ball/Twin Ball and Needle Valve for Draining and Bleeding applications

Application:

 Applicable Temperature: -20ºC ~ 150 ºC
 Main Materials: WCB/CF8/CF8M/CF3/CF3M
 Applicable Medium: Water / Oil / Gas / Causticity Medium
 Pressure Rating: PN16-PN125, 150LB-2500LB
 Size Range: 2" ~ 60"(DN15-DN300)
 

Materials:

ITEM	PART	MATERIAL
1	Body	CF8M/CF3M	CF8/CF3	WCB
2	Ball Seat	PTFE/RPTFE/PPL
3	Ball	316	304	201
4	Body Gasket	PTFE
5	Cap	CF8M/CF3M	CF8/CF3	WCB
6	Stem	316	304	201
7	Thrust Washer	PTFE
8	Stem Packing	PTFE
9	Gland Nut	304
10	Handle	201/WCB
11	Spring Washer	304
12	Nut	304
13	Handle Cover	Plastic

WORKSHOP

 
INSPECTION


We welcome all the world customers to contact us for more cooperation.

With our years of technical knowledge and experience, we assure you,

Naibang will be one of your best parters in China.
 

DESGN & MFT.	API 6D	ENDS CONNECTION	RF*NPT
PRE-TEP. RATING	ANSI B16.34	INSPECT & TEST	API 598
F-F DIMENSION	ANSI B16.10	END CONNECTION	ANSI B16.5
MARKING	MSS SP-25	FIRE SAFE DESIGN	API 607
PAITING	BARE FINISH	SPE. REQUIREMENTS	N.A