Normal Size: 1/2" ~40"

Pressure Rating: CLASS 150~2500

1. Integral Valve Structure

It is welded by forged steel. the forging Materials are subjected to ultrasonic examination according to ASME Nondestructive flaw detection requirements. the welding slope on the connection Face is subjected to liquid penetration examination.

2. Corrosion Resistance and Sulfide Stress Resistance

Certain corrosion allowance is left for the Body wall thickness. the carbon steel stem, fixed shaft, ball, seat and seat Ring are subjected to chemical nickel plating according to ASTM B733 and B656. In addition, various corrosion resistance materials are available for users to Select.
According to customer requirements, the valve materials can be selected According to NACE MR 0175/ISO 15156 or NACE MR 0103, and strict quality control and quality inspection should be carried out during the manufacturing so as to Fully meet the requirements in the standards and meet the service conditions in Sulfurization environment.

3. Welding of Transition Pipe

during the manufacturing of the fully welded Pipeline ball valve, the transition pipe can e welded for the welding ends Valve. the transition pipe can be supplied by users or by our company according to user requirements. Please indicate the transition pipe diameter and length A When placing orders.

Design Features

One-piece welded body & end-piece Connection pipe

Mirror polished stainless steel ball tested Spherical roundness.

Bubble tight excellent sealing with Carbon-reinforced PTFE (Teflon) seats.

Pre-loaded seat springs ensure leak-tight at Low pressure and reduce valve operational torque.

Anti blow-out stem according to international Standards.

Double O-rings ensure the stem sealing and can Be replaced.

Stem dry bearing, metal with PTFE coating Having self-lubricating capabilities need no additional lubricant.

Standard

Design Standard: ASME B 16.34/API 6D /API 608/BS EN ISO17292/ISO14313

Face to Face Dimensions: ASME B 16.10/API 6D/EN558

Connection End: ASME B 16.5/ASME B 16.47/ASME B 16.25/EN1092/JIS B2220/GOST12815

Type of Connection:RF/RTJ/BW

Product Name:Double Block and Bleed Ball Valve
Size: 1/2"-24"Pressure: 150LB,300LB,600LB,900LB,1500LBMaterial: A105,WCB, LCB,LCC, WC6,WC9, C5,C12,C12A, CF8, CF8M, CF3, CF3M, CK20, CN7M, CD4MCu, CK3MCuN, Cu5MCuC, CN3MN, M35-1,B148 ect
Connection: Flanges,RTJ Flange,Butt Weld,Hub end,Groove
Operate: Hand lever, Gearbox, Penumatic Actuator, Electric  Actuator, Hydraulic Actuator

 

Feature:
1,Double block and bleed design(DBB) 
2,Floating ball or Trunnion mounted ball
3,with two ball and one bleed valve, Anti-blow out stem
4,Dual ball is a necessary requirement when maintenance is taking place down Stream of the first isolation valve,
5,Cavity venting is provided by either two balls or globe OS&Y vent relief Valve so that the pressure between the two isolation valves can be safely Vented6,Full Port Or Reduced Bore
7,Light weight,in case of large production can greatly enhance the work Efficency.
8,Fire safe design and Anti-Static device.
9,ISO 5211 mounting design upon request
10,NACE MR-01-75