Ball valves are used to cut off or connect the medium in the pipeline, as well as to regulate and control the fluid. As a
professional manufacturer of customized valves, we can provide you with all kinds of floating and trunnion mounted ball valves.
Ball valves mainly feature compact structure and reliable sealing. The sealing surface and spherical surface are often closed,
which means it's not easy to be eroded by medium and easy to operate and maintain. NAI LOK is a professional ball valve supplier
and valve manufacturing company that has different types of ball valves for sale. We are good at making cast hand operated valve
and forged ball valve with various special alloys, which are suitable for general working media such as water, solvent, acid and
natural gas, as well as suitable for bad working.
Nickel valve applications: high concentration of alkali and reducing media
Monel applications: sulfite, phosphoric acid, thermal soda, high temperature halogen and reductive media
Hastelloy applications: hydrochloric acid, sulfuric acid, formic acid, phosphoric acid, organic acid, etc
NAI-LOK Ball Valve 4 Inch BL Series 3-Piece Stainless Steel 316L Electropolished Orbital Butt Weld 800 psi
The NAI-LOK BL Series 4 Inch Ball Valve is a high-performance, 3-piece design valve engineered for industrial and instrumentation applications. Manufactured from SS316L stainless steel with BA-grade (Bright Annealed) finish, this orbital butt weld ball valve provides excellent corrosion resistance, durability, and precise flow control. Rated for 800 psi, it is suitable for use in chemical, oil & gas, marine, and high-purity systems. The 3-piece construction allows easy maintenance, disassembly, and cleaning, ensuring long service life and reliable operation.
-
Swing out 3PC design for easy field maintenance
- All extend weld ends in SS316L material allows orbital welding in place.
- Locking handle stand in most sizes.
- High punity cleaning (Oil free)
- 100% leak testing of all valve assemblies.
- Double polyethylene bag packaging with polyethylene caps.
- Pressure Rating :Vacuum to 800psig
- Operating temperature:-40C
- Casting marking and inspecting:MSS Sp25 &MSS Sp55
- Polish standard:All welded parts are polished to 180Grit/180-23u in (0.46 to 0.58u)
- Other available optins --pneumatic actuator
Main applications in the petrochemical field:
- Cryogenic service.
- Low temperature.
- Ambient temperature.
- High temperature.
- Corrosive fluids.
- High pressures.
- Samplings from line.
- Fluids injection.
| Parameter |
Specification |
| Product Name |
3PCS Stainless Steel 316 Long Butt Welded Ball Valve |
| Size Range |
1/2" - 4" |
| Material |
SS316 Stainless Steel |
| Body Structure |
3PCS design |
| Connection Type |
Long Butt Weld Ends |
| Bore Type |
Full Bore |
| Media |
Gas, Oil, Water, Industrial Fluids |
| Working Pressure |
Up to 1000 PSI (customizable) |
| Temperature Range |
-20°C to +200°C |
| Operation |
Manual handle (actuator optional) |
| Sealing |
PTFE / RPTFE seat material |
| Standard Compliance |
ISO / DIN / ASME standards |
| Origin |
China |
| No. |
Part name |
Qty. |
Material |
| 1 |
Body |
1 |
CF8M |
|
2 |
End cap |
2 |
CF3M |
| 3 |
Ball |
1 |
CF8M |
| 4 |
Stem |
1 |
SS316 |
| 5 |
Ball seal |
2 |
TFM1600 |
| 6 |
Body seal |
2 |
PTFE. |
| 7 |
Thrust washer |
1 |
PTFE. |
| 8 |
Stem packing |
1 |
SS304 |
| 9 |
Stem nut |
1 |
SS304 |
| 10 |
Handle |
1 |
SS304 |
| 11 |
Handle nut |
1 |
SS304 |
| 12 |
Body bolt |
4 |
SS304 |
| 13 |
Bolt nut |
4 |
SS304 |
| 14 |
Bolt washer |
4 |
SS304 |
| 15 |
Handle sleeve |
1 |
VINTL |
| 16 |
Locking device |
1 |
SS304 |
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