Full welded ball valve, Barrel Type Fully Welded Ball Valve:
Steel fixed ball floating seat, soft \hard two-stage sealing valve, the primary seal for the metal seal, secondary seal for the non-metallic seal; secondary seal VITON-AED, DEVLON, PEEK and all-metal seals, etc. The ball using the valve body built into the structure of the bearer plate fixed valve fire test according to the provisions of the QAPI607 and BS6755 antistatic, with the valve stem to prevent the blowout function.
Cylinder body group welding form three bodies through two symmetrical longitudinal weld group welding into or two bodies through a longitudinal weld group welding into. Cylinder valve body structure manufacturing process is relatively simple, easy to assemble and locate, billet manufacturing required mold is simple, and easy to use the support plate on the ball to fix, easy to install the stem part, suitable for large Caliber all-welded ball valves.
1: Urban gas: gas output pipelines, main and branch supply pipelines, etc.
2: Centralized heating: Large scale heating equipment output pipelines, main pipelines, and branch pipelines.
3: Heat exchanger: opening and closing of pipelines and various circuits.
4: Steel plant: various fluid pipelines, waste gas selective discharge pipelines, gas and heat supply pipelines, fuel supply pipelines.
5: Various industrial equipment, various heat treatment pipelines, various industrial gas and heat pipelines.
Standard specifications for fully welded ball valves and full bore welded ball valves:
Size: DN15~1500
Pressure rating: ANSI 150lb~2500lb
Applicable temperature: -35~350 ℃
Valve body material: carbon steel, stainless steel, alloy steel
Internal material: carbon steel, stainless steel, alloy steel, special materials
Features of fully welded ball valve products:
The valve is full bore and has a fixed pivot structure.
The valve seat and valve stem are sealed twice, and the valve seat has an independent grease injection port.
Fixed ball cutoff and release function, equipped with dual piston effect valve seat, zero leakage.
The valve body adopts a fully welded type, which can extend the valve stem and be used underground.
Anti static, fire safe, and valve stem anti blowing function.
Long service life.
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.
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.
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.
Technical Specification
Normal Size Range: 2"-24" DN15 to DN600
Normal Pressure Rating: ANSI #150 to 900, PN10 Thru PN150
Material: Carbon Steel & Stainless Steel
Optional Locking Device or Stem Extension
Ends Connections: W.ExW.E, W.ExFLG
Optional Direct Mounting to ISO 5211
Full Port or Regular Bore
Double Block and Bleed
NACE MR-01-75
Standards compliance
Design and Manufacture: API 6D, ASME B16.34, EN12516, DIN3357-1
Face to face(end to end): ANSI B16.10,API 6D
Fire-safe: API 607,API 6FA
Butt welded end: ANSI B16.25
Test and inspection: API 598,API 6D
