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Gas Welded Ball Valve
Gas Welded Ball Valve
Gas Welded Ball Valve

Gas Welded Ball Valve

Size Range: 2"~48" (DN50~DN1200)
Pressure rating: Class 150~2500(PN16-PN420)
Temperature: -29℃~200℃
Connection end: Flange,BW
Operation: Manual,Pneumatic,Electric,Hydraulic
Material: Carbon steel,Low temperature steel,Stainless steel etc.
INTRODUCTION
DATA
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INTRODUCTION
A gas welded ball valve is a valve used to control the flow of gas and is characterized by a fixed connection between the ball and the valve body through a welding process, resulting in a tight seal and fluid control. This type of ball valve is suitable for use in a variety of gas piping systems, including domestic, commercial and industrial applications.
  • Tight Welded Connection: The ball and valve body are joined together through a welding process, eliminating removable connection points and ensuring a reliable seal.
  • Safety: Due to the tight welded connection, the gas welded ball valve effectively prevents gas leakage and ensures the safety of the gas system.
  • Fluid Control: By rotating the ball, the flow of gas can be precisely adjusted to meet different needs.
  • Durability: Gas welded ball valves are often made of corrosion-resistant materials that can withstand the chemicals in the gas, increasing the durability of the valve.
  • Easy Operation: Gas welded ball valves are usually equipped with a manual lever, which makes it easy for users to open and close the valve easily.
  • Scope of application: Suitable for a variety of gas systems such as home gas supply, commercial buildings, industrial facilities and so on.
Gas welded ball valve is a kind of valve with tight welded connection, safety and reliability, fluid control ability, used to control the flow of gas, widely used in various gas pipeline systems.

Features and benefits
  1. Valves are designed with forged steel trunnion mounted.
  2. Floating seat.
  3. PMSS or metal-metal seat.
  4. Balls are fixed by internal mounting plate.
  5. Fire safe design as per standard API607/API6FA.
  6. Seat structure could be DBB/DIB/DBB-DIB.
  7. Weled by typical narrow-gap multi-layer submerged arc welding.
  8. Welding seams are inspected by 100% UT and hardness test.
Applications
natural gas, city gas, oil field use
DATA

The butt welding end of the valve connection can be designed and manufactured according to user requirements
Design Basis GB   API ASME
Design Standards GB/T 12237 GB/T 19672 API 6D ASME B 16.34
Structure Length GB/T 12221 GB/T 19672 API 6D ASME B 16.10
Connection Ends - Flange Connection GB/T 9113 ASME B16.5/MSS SP - 44/ASME B 16.47
Connection Ends - Butt - Welded Connection GB/T 12224 ASME B16.25
Material Requirements NACE MR0175
Testing and Inspection JB/T 9092;GB/T 26480 GB/T 19672 API 598;API 6D ASME B 16.34
Fire - Resistance Test JB/T 6899 API 6FA/API 607
 
Serial No. Part Name Carbon Steel Series Low - Temperature Steel Series Stainless Steel Series
1 Middle Body ASTM A105 ASTM A350-LF2/LF3 ASTM A182-F304/F316
2 Left and Right Bodies ASTM A105 ASTM A350-LF2/LF3 ASTM A182-F304/F316
6 Helical Spring Chromium - molybdenum iron alloy - 750 Chromium - molybdenum iron alloy - 750 Chromium - molybdenum iron alloy - 750
7a Valve Seat Support Ring ASTM A105 + ENP ASTM A350-LF2/LF3 + ENP ASTM A182-F304/F316
7b Sealing Ring Standard explosion - proof fluororubber/Nylon; Special: DEVLON/PEEK Standard explosion - proof fluororubber/Nylon; Special: DEVLON/PEEK Standard explosion - proof fluororubber/Nylon; Special: DEVLON/PEEK
9a O - ring Seal Explosion - proof fluororubber Explosion - proof fluororubber Explosion - proof fluororubber
9b Fire - resistant Ring Graphite Graphite Graphite
10 Ball ASTM A105+ENP ASTM A350—LF2/LF3 + ENP ASTM A182-F304/F316
11 Sliding Bearing 304+PTFE 304+PTFE 304+PTFE
13 Ball Thrust Bearing 304+PTFE 304+PTFE 304+PTFE
14 Electrostatic Spring 316SS 316SS 316SS
22 Upper Valve Stem ASTM A182-F304/F316 ASTM A182-F304/F316 ASTM A182-F304/F316
23 Sliding Bearing 304+PTFE 304+PTFE 304+PTFE
24 Valve Stem Thrust Bearing 304+PTFE 304+PTFE 304+PTFE
26 O - ring Seal Explosion - proof fluororubber Explosion - proof fluororubber Explosion - proof fluororubber
27a Sealing Sleeve Ring ASTM A105 ASTM A350-LF2/LF3 ASTM A182-F304/F316
27b Gland ASTM A105 ASTM A350-LF2/LF3 ASTM A182-F304/F316
28 Lining Plate ASTM A105 ASTM A350-LF2/LF3 ASTM A182-F304/F316
29 Lining Pin ASTM A276 - 410 ASTM A276 - 304 ASTM A276 - 316
30 Packing Graphite Graphite Graphite
35 Manual Operator Assembly Assembly Assembly
36 Key ANSI 1045 ASTM A276 - 410 ASTM A276 - 304
38 Stud ASTM A193-B7/B7M ASTM A320L7 ASTM A320-B8/B8M
39 Nut ASTM A194-2H/2HM ASTM A194 - 4 ASTM A194-8/8M
40 Spring Washer 65Mn 304SS 304SS
41a Injection Valve Carbon Steel Carbon Steel Stainless Steel
41b Check Valve Carbon Steel Carbon Steel Stainless Steel
45a Screw ASTM A193-B7/B7M ASTM A320L7 ASTM A320-B8/B8M
45b Screw ASTM A193-B7/B7M ASTM A320L7 ASTM A320-B8/B8M
52 Gasket 304+Graphite 304+Graphite 304+Graphite
53 Locating Pin ANSI 1045 ASTM A276 - 410 ASTM A276 - 304
54 O - ring Seal Explosion - proof fluororubber Explosion - proof fluororubber Explosion - proof fluororubber
55 Lifting Eye Carbon Steel Carbon Steel Carbon Steel
56 Base Carbon Steel Carbon Steel Carbon Steel
57 Connection Disk ASTM A105 ASTM A350—LF2/LF3 ASTM A182-F304/F316
58 Drain Valve/Bleed Valve Carbon Steel Carbon Steel Stainless Steel

 
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