Full welded ball valve, full bore welded ball valve Purpose:
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
The flange fully welded ball valve is designed according to the buried working condition of the valve, and is equipped with valve extension rods, maintenance extension pipes (exhaust pipes on both sides of the channel, grease injection pipes on both sides of the valve seat, and drainage pipes at the bottom of the valve body), and control valves, so that the valve operation position is at a convenient position on the ground for operation. The valve surface is protected with corrosion-resistant asphalt coating or epoxy resin, and on-site pipeline bridging and cathodic protection measures are suitable for underground use environments.
The flange is fully welded with a ball and assembled as a whole, avoiding any possible leakage of the medium. It adopts a spring loaded valve seat combination structure, which has strong adaptability to pressure and temperature changes, ensuring close contact between the sealing ring and the ball. On the premise of ensuring sealing, the valve can be opened and closed flexibly and operated easily.
There are two structural forms of fully welded flange ball valves. The Caliber is smaller and uses a steel pipe cold press welding to form the valve body. The large Caliber valve body is formed from steel plates and welded as a whole, avoiding any possible leakage of media. The valve seat combination structure is loaded with springs, which has strong adaptability to pressure and temperature changes, flexible opening and closing, and easy operation. The ball and valve stem are processed by precision machine tools, reducing the friction coefficient between the contact surfaces. Meets sealing performance level A, with minimal pipeline load and worry free warranty.
|
DN |
L(RF) |
L(WE) |
D1 |
D2 |
H1 |
H1 |
W |
|
300 |
648 |
635 |
377 |
508 |
365 |
315 |
500 |
|
350 |
762 |
762 |
426 |
580 |
410 |
370 |
500 |
|
400 |
838 |
838 |
480 |
675 |
457 |
425 |
600 |
|
450 |
914 |
914 |
530 |
740 |
495 |
465 |
600 |
|
500 |
991 |
1991 |
530 |
805 |
545 |
520 |
400 |
|
600 |
1143 |
1143 |
630 |
965 |
625 |
615 |
400 |
|
700 |
1346 |
1346 |
730 |
1120 |
702 |
663 |
500 |
|
800 |
1524 |
1524 |
830 |
1280 |
790 |
755 |
500 |
|
900 |
1727 |
1727 |
940 |
1410 |
865 |
825 |
500 |
| 1000 |
1900 |
1840 |
1045 |
1570 |
965 |
920 |
500 |
