Trusted Full Welded Ball Valve Manufacturer
NTVAL offers durable full welded ball valves with excellent sealing for tough industrial use. ISO9001 and API6D certified, our valves meet strict standards and deliver great value with competitive pricing and strong technical support.
Reliable Full Welded Ball Valve
The Full Welded Ball Valve is a durable valve used for managing flow in high-pressure pipelines, often found in natural gas and oil industries. This valve is built with a single, welded body, which means it has no bolts or gaskets that could weaken over time, making it particularly reliable for underground or long-term installations.
Inside, a round ball with a hole turns to control the flow, either allowing materials to pass through or blocking them entirely. This design minimizes leaks, reduces maintenance, and keeps the valve operating smoothly in challenging conditions. The Full Welded Ball Valve is a trusted choice where a strong, lasting seal is important.
Quality Control
PMI Test checks if the metal used in the full welded ball valve matches the correct chemical composition before it moves forward in production.
PMI Test
Sealing Test evaluates the full welded ball valve under pressure, confirming it can hold fluids without leaking during operation.
Sealing Test
Low Emission Test measures how well the valve prevents harmful gas emissions, helping to control environmental leaks during use.
Low Emission Test
Impact Test assesses the valve’s strength by testing how it withstands sudden force or pressure without damage or failure.
Impact Test
Dimension Inspection measures the valve’s size and shape to verify that all parts are within precise standards for proper assembly.
Dimension Inspection
Painting Thickness Test examines the protective coating on the valve to confirm it is applied evenly and provides lasting corrosion resistance.
Painting Thickness Test
PT uses a liquid dye to detect surface cracks, helping technicians identify any hidden flaws that might affect the valve’s performance.
PT
Material Inspection checks the quality of the raw materials used to manufacture the valve, ensuring only high-quality materials are used.
Material Inspection
Our Valve Applications in Key Industries
Discover how our advanced valve solutions improve flow control, delivering enhanced efficiency, safety, and strict quality assurance.
Full welded ball valves resist corrosion and manage high-pressure chemicals, making them a reliable solution for chemical processing plants.
Chemical Processing
These valves handle extreme temperatures and pressures, providing dependable performance in petrochemical plants where safety and durability are key.
Petrol Chemical
Full welded ball valves offer leak-proof performance and long-lasting durability, meeting the strict safety standards in nuclear and energy facilities.
O.P.G & Nuclear
Able to withstand harsh chemicals and tough environments, these valves are an excellent fit for the demands of pulp and paper production.
Pulp
In mining, full welded ball valves handle high pressures and abrasive materials, making them essential for harsh underground operations.
Mining
These valves deliver reliable, leak-free control for water distribution and sewage systems, providing efficiency for large-scale infrastructure projects.
Water & Sewage
Full welded ball valves regulate steam flow effectively, handling high temperatures and pressures, making them a strong choice for steam systems.
Steam System
These valves control steam and fluid pressure in boiling systems, offering reliable operation and preventing leaks during high-heat processes.
Boiling System
Get More Versatile Valve
Variants
Pups
Butt weld valves can be supplied with transition pieces (PUPS) to minimize the risk of seat and seal damage during welding and post-weld heat treatment. The customer should specify the length of the pups, as well as the type and grade of pipe required.
Actuators
The bonnet design of NTVAL Top Entry Ball Valves is compatible with various actuators, including manual, electric, hydraulic, or pneumatic options.
Metal Seated Ball Valves
Top Entry Metal Seated Ball Valves are engineered to handle high-temperature services or fluids containing solid particles, where the use of soft-seated ball valves is not recommended or feasible.
Sub-Sea Options
Sub-Sea valves are available as an option upon request.
Extensions
NTVAL Top Entry Ball Valves can be customized for below-ground or buried service with fully operational extensions tailored to your specifications. These extensions maintain Body Bleed and Sealant Injection functions, along with complete valve control via manual or powered actuators.
The dimensions for Gear Operator or Actuator extensions are provided with reference from the valve centerline to the center of the handwheel.
Installation Flange End (RF & RTJ)
Top Entry Ball Valves can be installed in both vertical and horizontal piping systems, with the stem positioned anywhere from vertical to horizontal.
When installing, it’s important to correctly align the mating flanges, considering bolthole placement, parallelism, and perpendicularity. Use the appropriate size gasket or RTJ metal seal for the connection. Flange studs or bolts should be the correct size and properly tightened.
A well-constructed piping system will avoid placing unnecessary stress on valve assemblies, as these valves are not designed to compensate for inadequate pipe tolerances.
WELD ENDS (WE):
Before installing or welding the NTVAL Top Entry Weld End Ball Valve, ensure the ball is in the open position. Align the valve’s Weld Ends with the pipe, and make sure all welding surfaces are free from contaminants such as dirt, dust, and grease, as these can negatively impact weld quality.
Caution:
During the welding process, monitor the valve body temperature around the circumference at a location aligned with the sealant injection fittings. Use a Temperature Stick or another reliable temperature indicator to ensure the temperature does not exceed 300°F.
This precaution is critical to prevent heat damage to non-metallic seals. After tacking the valve in position, check for proper alignment. Complete the welding process according to the correct procedure for the material grade and condition, while adhering to the above temperature caution.
Full Welded Ball Valve Design Features
Seamless Carbon Steel Body
The fully welded ball valve body is designed for maximum strength and minimal weight, offering a compact and streamlined profile.
Stainless Steel Ball
The stainless steel ball is manufactured with extremely tight tolerances, ground to within microns of perfect roundness, ensuring smooth operation and a secure seal.
Optional Locking Device with Position Indicator
A locking device with a position indicator provides instant readability of the valve’s operating position.
Stem Bearings
The stem bearings are made from an electrically conductive material that grounds the stem, preventing static buildup and potential arcing.
Seat Seals
The seals, made from 25% carbonized PTFE (Teflon) (G-453), provide a tight seal while allowing for easy, low-torque, quarter-turn operation.
Stainless Labels
Each valve is permanently marked with stainless steel labels, color-coded and stamped with traceable serial numbers.
Seat Quality Features
- Do not absorb water, and does not expand
- Chemical resistant
- High friction characteristics
- Good temperature stability
- Tested and approved up to 250℃
Full Welded Ball Valves General Features
- Uni-body Top Entry
- Double Block and Bleed
- Fire Safe, Anti-static, Stem Blow-out
- Optional Locking Device and Position Indicator
- Size Ranges: 1/2″ through 16″ (DN15 through DN400)
- Pressure Ratings: ASME Class 150 through Class 900 (PN10 through PN150)
- Standard Materials Ranges: Cast Carbon Steel, Stainless Steel, Alloy Steel etc.
Types of Full Welded Ball Valve
Full Welded Ball Valve Welded End
- One Piece Uni-body, Top Entry, Full Port, Welded Ends
- Floating Ball, Fire Safe, Blow-out Proof Stem
- Anti-static Device,
- Cavity Relieving Seats NACE MR-01-75,
- Optional Locking Device
- Designed to EN12516, DIN3357-1
| Face to Face | EN558-1/DIN 3202 |
| End Flange | EN1092/DIN 2542 |
| Buttweld | EN12627 |
| Class | PN25/PN40 |
PN25/PN40 DIMENSION
| SIZE(DN) | PN | L | D | G1 | G2 | H | h | t | S |
| Unit:mm | |||||||||
| 15 | 40 | 230 | 15 | 42.4 | 26.9 | 82 | 38 | 2.3 | 120 |
| 20 | 40 | 230 | 20 | 48.3 | 33.7 | 105 | 36 | 2.6 | 120 |
| 25 | 40 | 230 | 25 | 60.3 | 42.4 | 95 | 38 | 2.6 | 130 |
| 32 | 40 | 260 | 32 | 76.1 | 48.3 | 125 | 49 | 2.6 | 160 |
| 40 | 40 | 260 | 40 | 88.9 | 60.3 | 135 | 49 | 2.9 | 180 |
| 50 | 40 | 300 | 50 | 108 | 76.1 | 118 | 53 | 2.9 | 300 |
| 65 | 25 | 300 | 65 | 127 | 88.9 | 141 | 65 | 3.2 | 300 |
| 80 | 25 | 325 | 80 | 159 | 114.3 | 188 | 82 | 3.6 | 400 |
| 100 | 25 | 325 | 100 | 193.7 | 139.7 | 208 | 78 | 4 | 400 |
| 125 | 25 | 350 | 125 | 219.1 | 168.3 | 400 | 230 | 4.5 | 320 |
| 150 | 25 | 400 | 150 | 275 | 219.1 | 450 | 330 | 4.5 | 350 |
| 200 | 25 | 530 | 200 | 357 | 273 | 525 | 400 | 5 | 350 |
| 250 | 25 | 550 | 250 | 427 | 325 | 595 | 450 | 5.6 | 400 |
Full Welded Ball Valve - Flanged End
- One Piece Uni-body, Top Entry, Full Port, Flanged Ends
- Floating Ball, Fire Safe, Blow-out Proof Stem
- Anti-static Device, Cavity Relieving Seats
- NACE MR-01-75, Optional Locking Device
- Designed to EN12516, DIN3357-1
| Face to Face | EN558-1/DIN 3202 |
| End Flange | EN1092/DIN 2542 |
| Buttweld | EN12627 |
| Class | PN16/PN25/PN40 |
PN25/PN40 DIMENSION
| SIZE(DN) | L | D | D1 | D2 | H | b-f | Z-φ d | Do |
| Unit:mm | ||||||||
| 15 | 130 | 95 | 65 | 45 | 60 | 16-2 | 4-14 | 40 |
| 20 | 140 | 105 | 75 | 55 | 65 | 16-2 | 4-14 | 50 |
| 25 | 150 | 115 | 85 | 65 | 90 | 18-2 | 4-14 | 58 |
| 32 | 180 | 135 | 100 | 78 | 105 | 18-3 | 4-18 | 66 |
| 40 | 200 | 145 | 110 | 85 | 170 | 18-3 | 4-18 | 76 |
| 50 | 220 | 160 | 125 | 100 | 230 | 20-3 | 4-18 | 88 |
| 65 | 250 | 180 | 145 | 120 | 250 | 22-3 | 8-18 | 110 |
| 80 | 280 | 195 | 160 | 135 | 250 | 22-3 | 8-18 | 121 |
| 100 | 320 | 230 | 190 | 160 | 295 | 24-3 | 8-23 | 150 |
| 125 | 400 | 270 | 220 | 188 | 330 | 28-3 | 8-25 | 176 |
| 150 | 400 | 300 | 250 | 218 | 375 | 30-3 | 8-25 | 204 |
| 200 | 550 | 375 | 320 | 282 | 440 | 38-3 | 12-30 | 260 |
PN16 Dimension
| SIZE(DN) | L | D | D1 | D2 | H | b-f | Z-φ d | Do |
| Unit:mm | ||||||||
| 15 | 130 | 95 | 65 | 45 | 60 | 14-2 | 4-14 | 108 |
| 20 | 140 | 105 | 75 | 55 | 64 | 14-2 | 4-14 | 120 |
| 25 | 150 | 115 | 85 | 65 | 90 | 16-2 | 4-14 | 165 |
| 32 | 165 | 135 | 100 | 78 | 105 | 16-2 | 4-18 | 180 |
| 40 | 180 | 145 | 110 | 85 | 150 | 16-3 | 4-18 | 240 |
| 50 | 200 | 160 | 125 | 100 | 190 | 16-3 | 4-18 | 240 |
| 65 | 220 | 180 | 145 | 120 | 195 | 18-3 | 4-18 | 320 |
| 80 | 250 | 195 | 160 | 135 | 215 | 20-3 | 8-18 | 350 |
| 100 | 280 | 215 | 180 | 155 | 250 | 20-3 | 8-18 | 400 |
| 125 | 320 | 245 | 210 | 185 | 280 | 22-3 | 8-18 | 500 |
| 150 | 360 | 280 | 240 | 210 | 320 | 24-3 | 8-23 | 600 |
| 200 | 400 | 335 | 295 | 265 | 370 | 26-3 | 12-23 | 800 |
PN25 Dimension
| SIZE(DN) | L | D | D1 | D2 | H | b-f | Z-φ d | Do |
| Unit:mm | ||||||||
| 40 | 180 | 145 | 110 | 85 | 160 | 18-3 | 4-18 | 240 |
| 50 | 200 | 160 | 125 | 100 | 205 | 20-3 | 4-18 | 270 |
| 65 | 220 | 180 | 145 | 120 | 215 | 22-3 | 8-18 | 350 |
| 80 | 250 | 195 | 160 | 135 | 230 | 22-3 | 8-18 | 400 |
| 100 | 280 | 230 | 190 | 160 | 270 | 24-3 | 8-23 | 500 |
| 125 | 320 | 270 | 220 | 188 | 300 | 28-3 | 8-25 | 600 |
| 150 | 360 | 300 | 250 | 218 | 340 | 30-3 | 8-25 | 900 |
| 200 | 400 | 360 | 310 | 278 | 400 | 34-3 | 12-25 | 1100 |
Full Welded Ball Valve Welded End with Stem Extension
- One Piece Uni-body, Top Entry, Reduced Bore, Welded Ends
- Long Stem, Floating Ball, Fire Safe, Blow-out Proof Stem
- Anti-static Device, Cavity Relieving Seats
- NACE MR-01-75, Optional Locking Device
- Designed to EN12516, DIN3357-1
| Face to Face | EN558-1/DIN 3202 |
| End Flange | EN1092/DIN 2542 |
| Buttweld | EN12627 |
| Class | PN25/PN40 |
PN25/PN40 DIMENSION
| SIZE(DN) | PN | L | D | G1 | G2 | Hmax | t | S |
| Unit:mm | ||||||||
| 15 | 40 | 230 | 10 | 33.7 | 21.3 | 3000 | 2 | 120 |
| 20 | 40 | 230 | 15 | 42.4 | 26.9 | 3000 | 2.3 | 120 |
| 25 | 40 | 230 | 20 | 48.3 | 33.7 | 3000 | 2.6 | 120 |
| 32 | 40 | 260 | 25 | 60.3 | 42.4 | 3000 | 2.6 | 130 |
| 40 | 40 | 260 | 32 | 76.1 | 48.3 | 3000 | 2.6 | 160 |
| 50 | 40 | 300 | 40 | 88.9 | 60.3 | 3000 | 2.9 | 180 |
| 65 | 25 | 300 | 50 | 108 | 76.1 | 3000 | 2.9 | 300 |
| 80 | 25 | 300 | 65 | 127 | 88.9 | 3000 | 3.2 | 300 |
| 100 | 25 | 325 | 80 | 159 | 114.3 | 3000 | 3.6 | 400 |
| 125 | 25 | 325 | 100 | 193.7 | 139.7 | 3000 | 4 | 400 |
| 150 | 25 | 350 | 125 | 219.1 | 168.3 | 3000 | 4.5 | 320 |
| 200 | 25 | 400 | 150 | 275 | 219.1 | 3000 | 4.5 | 350 |
| 250 | 25 | 530 | 200 | 357 | 273 | 3000 | 5 | 350 |
| 300 | 25 | 550 | 250 | 427 | 325 | 3000 | 5.6 | 400 |
Full Welded Ball Valve - Welded End
- One Piece Uni-body, Top Entry, Reduced Bore, Welded Ends
- Floating Ball, Fire Safe, Blow-out Proof Stem
- Anti-static Device, Cavity Relieving Seats
- NACE MR-01-75, Optional Locking Device
- Designed to EN12516, DIN3357-1
| Face to Face | EN558-1/DIN 3202 |
| End Flange | EN1092/DIN 2542 |
| Buttweld | EN12627 |
| Class | PN25/PN40 |
PN25/PN40 DIMENSION
| SIZE(DN) | PN | L | D | D1 | D2 | h | H | S | t | Kv |
| Unit:mm | ||||||||||
| 15 | 40 | 230 | 10 | 21.3 | 33.7 | 38 | 80 | 120 | 2 | 8 |
| 20 | 40 | 230 | 15 | 26.9 | 42.4 | 38 | 82 | 120 | 2.3 | 14 |
| 25 | 40 | 230 | 20 | 33.7 | 48.3 | 36 | 105 | 120 | 2.6 | 25 |
| 32 | 40 | 260 | 25 | 42.4 | 60.3 | 38 | 95 | 130 | 2.6 | 41 |
| 40 | 40 | 260 | 32 | 48.3 | 76.1 | 49 | 125 | 160 | 2.6 | 65 |
| 50 | 40 | 300 | 40 | 60.3 | 88.9 | 49 | 135 | 180 | 2.9 | 108 |
| 65 | 25 | 300 | 51 | 76.1 | 108 | 53 | 118 | 300 | 2.9 | 180 |
| 80 | 25 | 300 | 66 | 88.9 | 127 | 65 | 141 | 300 | 3.2 | 290 |
| 100 | 25 | 325 | 81.5 | 114.3 | 159 | 82 | 188 | 400 | 3.6 | 470 |
| 125 | 25 | 325 | 102 | 139.7 | 193.7 | 78 | 203 | 400 | 4 | 880 |
| 150 | 25 | 350 | 125 | 168.3 | 219.1 | 280 | 400 | 320 | 4.5 | 1150 |
| 200 | 25 | 400 | 152 | 219.1 | 275 | 330 | 450 | 350 | 4.5 | 1750 |
| 250 | 25 | 530 | 203 | 273 | 357 | 400 | 525 | 350 | 5 | 3200 |
| 300 | 25 | 550 | 254 | 325 | 427 | 450 | 595 | 400 | 5.6 | 4600 |
Full Welded Ball Valve - Flanged End
- One Piece Uni-body, Top Entry, Reduced Bore, Welded Ends
- Floating Ball, Fire Safe, Blow-out Proof Stem
- Anti-static Device, Cavity Relieving Seats
- NACE MR-01-75, Optional Locking Device
- Designed to EN12516, DIN3357-1
| Face to Face | EN558-1/DIN 3202 |
| End Flange | EN1092/DIN 2542 |
| Buttweld | EN12627 |
| Class | PN25/PN40 |
PN25/PN40 DIMENSION
| SIZE(DN) | PN(body) | PN(FLG) | L | D | φ1 | φ2 | d | Holes | H | S |
| Unit:mm | ||||||||||
| 15 | 40 | 40 | 245 | 15 | 85 | 65 | 14 | 4 | 3000 | 120 |
| 20 | 40 | 40 | 245 | 20 | 105 | 75 | 14 | 4 | 3000 | 120 |
| 25 | 40 | 40 | 275 | 25 | 115 | 85 | 14 | 4 | 3000 | 130 |
| 32 | 40 | 40 | 275 | 32 | 140 | 100 | 18 | 4 | 3000 | 160 |
| 40 | 40 | 40 | 320 | 40 | 150 | 110 | 18 | 4 | 3000 | 180 |
| 50 | 40 | 4A | 320 | 50 | 165 | 125 | 40 | 4 | 3000 | 300 |
| 65 | 25 | 16 | 325 | 65 | 185 | 145 | 18 | 4 | 3000 | 300 |
| O0 | 25 | 16 | 350 | 80 | 200 | 160 | 18 | 8 | 3000 | 400 |
| 100 | 25 | 16 | 350 | 100 | 220 | 180 | 18 | 8 | 3000 | 400 |
| 125 | 25 | 16 | 375 | 125 | 250 | 210 | 18 | 8 | 3000 | 320 |
| 150 | 25 | 0 | 515 | 150 | 285 | 240 | 22 | 8 | 3000 | 350 |
| 200 | 25 | 16 | 560 | 200 | 340 | 295 | 22 | 12 | 3000 | 350 |
| 250 | 25 | 16 | 595 | 250 | 405 | 355 | 26 | 12 | 3000 | 400 |
Full Welded Ball Valve Welded End with Stem Extension
- One Piece Uni-body, Top Entry, Reduced Bore, Welded Ends
- Long Stem, Floating Ball, Fire Safe, Blow-out Proof Stem
- Anti-static Device, Cavity Relieving Seats
- NACE MR-01-75, Optional Locking Device
- Designed to EN12516, DIN3357-1
| Face to Face | EN558-1/DIN 3202 |
| End Flange | EN1092/DIN 2542 |
| Buttweld | EN12627 |
| Class | PN25/PN40 |
PN25/PN40 DIMENSION
| SIZE(DN) | PN | L | D | G1 | G2 | Hmax | t | S |
| Unit:mm | ||||||||
| 15 | 40 | 230 | 15 | 42.4 | 26.9 | 3000 | 2.3 | 120 |
| 20 | 40 | 230 | 20 | 48.3 | 33.7 | 3000 | 2.6 | 120 |
| 25 | 40 | 260 | 25 | 60.3 | 42.4 | 3000 | 2.6 | 130 |
| 32 | 40 | 260 | 32 | 76.1 | 48.3 | 3000 | 2.6 | 160 |
| 40 | 40 | 300 | 40 | 88.9 | 60.3 | 3000 | 2.9 | 180 |
| 50 | 40 | 300 | 50 | 108 | 76.1 | 3000 | 2.9 | 300 |
| 65 | 25 | 300 | 65 | 127 | 88.9 | 3000 | 3.2 | 300 |
| 80 | 25 | 325 | 90 | 159 | 114.3 | 3000 | 3.6 | 400 |
| 100 | 0 | 325 | 100 | 193.7 | 139.7 | 3000 | 4 | 400 |
| 125 | 25 | 350 | 125 | 219.1 | 168.3 | 3000 | 4.5 | 320 |
| 150 | 25 | 400 | 150 | 275 | 219.1 | 3000 | 4.5 | 350 |
| 200 | 25 | 530 | 200 | 357 | 273 | 3000 | 5 | 350 |
| 250 | 25 | 550 | 250 | 427 | 325 | 3000 | 5.6 | 400 |
Full Welded Ball Valve - Flanged End
- Anti-static Device, Cavity Relieving Seats
- NACE MR-01-75, Optional Locking Device
- Designed to EN12516, DIN3357-1
| Face to Face | EN558-1/DIN 3202 |
| End Flange | EN1092/DIN 2542 |
| Buttweld | EN12627 |
| Class | PN25/PN40 |
PN25/PN40 DIMENSION
| SIZE(DN) | PN(body) | PN(FLG) | L | D | φ1 | φ2 | d | Holes | H | S |
| Unit:mm | ||||||||||
| 15 | 40 | 40 | 245 | 15 | 85 | 65 | 14 | 4 | 3000 | 120 |
| 20 | 40 | 40 | 245 | 20 | 105 | 75 | 14 | 4 | 3000 | 120 |
| 25 | 40 | 40 | 275 | 25 | 115 | 85 | 14 | 4 | 3000 | 130 |
| 32 | 40 | 40 | 275 | 32 | 140 | 100 | 18 | 4 | 3000 | 160 |
| 40 | 40 | 40 | 320 | 40 | 150 | 110 | 18 | 4 | 3000 | 180 |
| 50 | 40 | 4A | 320 | 50 | 165 | 125 | 40 | 4 | 3000 | 300 |
| 65 | 25 | 16 | 325 | 65 | 185 | 145 | 18 | 4 | 3000 | 300 |
| O0 | 25 | 16 | 350 | 80 | 200 | 160 | 18 | 8 | 3000 | 400 |
| 100 | 25 | 16 | 350 | 100 | 220 | 180 | 18 | 8 | 3000 | 400 |
| 125 | 25 | 16 | 375 | 125 | 250 | 210 | 18 | 8 | 3000 | 320 |
| 150 | 25 | 0 | 515 | 150 | 285 | 240 | 22 | 8 | 3000 | 350 |
| 200 | 25 | 16 | 560 | 200 | 340 | 295 | 22 | 12 | 3000 | 350 |
| 250 | 25 | 16 | 595 | 250 | 405 | 355 | 26 | 12 | 3000 | 400 |
Full Welded Ball Valve Flanged End with Stem Extension
- One Piece Uni-body, Top Entry, Reduced Bore, Welded Ends
- Long Stem, Floating Ball, Fire Safe, Blow-out Proof Stem
- Anti-static Device, Cavity Relieving Seats
- NACE MR-01-75, Optional Locking Device
- Designed to EN12516, DIN3357-1
| Face to Face | EN558-1/DIN 3202 |
| End Flange | EN1092/DIN 2542 |
| Buttweld | EN12627 |
| Class | PN25/PN40 |
PN25/PN40 DIMENSION
| SIZE(DN) | PN(body) | PN(FLG) | L | D | φ1 | φ2 | d | Holes | H | S |
| Unit:mm | ||||||||||
| 15 | 40 | 40 | 245 | 15 | 85 | 65 | 14 | 4 | 3000 | 120 |
| 20 | 40 | 40 | 245 | 20 | 105 | 75 | 14 | 4 | 3000 | 120 |
| 25 | 40 | 40 | 275 | 25 | 115 | 85 | 14 | 4 | 3000 | 130 |
| 32 | 40 | 40 | 275 | 32 | 140 | 100 | 18 | 4 | 3000 | 160 |
| 40 | 40 | 40 | 320 | 40 | 150 | 110 | 18 | 4 | 3000 | 180 |
| 50 | 40 | 4A | 320 | 50 | 165 | 125 | 40 | 4 | 3000 | 300 |
| 65 | 25 | 16 | 325 | 65 | 185 | 145 | 18 | 4 | 3000 | 300 |
| O0 | 25 | 16 | 350 | 80 | 200 | 160 | 18 | 8 | 3000 | 400 |
| 100 | 25 | 16 | 350 | 100 | 220 | 180 | 18 | 8 | 3000 | 400 |
| 125 | 25 | 16 | 375 | 125 | 250 | 210 | 18 | 8 | 3000 | 320 |
| 150 | 25 | 0 | 515 | 150 | 285 | 240 | 22 | 8 | 3000 | 350 |
| 200 | 25 | 16 | 560 | 200 | 340 | 295 | 22 | 12 | 3000 | 350 |
| 250 | 25 | 16 | 595 | 250 | 405 | 355 | 26 | 12 | 3000 | 400 |
Structure Features
1. Integral Valve Structure
The valve is constructed from forged steel, and welded into an integral structure. The forging materials undergo ultrasonic examination in compliance with ASME nondestructive flaw detection standards. The welding slope on the connection face is tested using liquid penetration methods.
2. Corrosion Resistance And Sulfide Stress Resistance
A specific corrosion allowance is included in the body wall thickness. The carbon steel stem, fixed shaft, ball, seat, and seat ring are treated with chemical nickel plating in accordance with ASTM B733 and B656.
Additionally, various corrosion-resistant materials are available for selection. Depending on customer requirements, valve materials can be chosen in accordance with NACE MR 0175/ISO 15156 or NACE MR 0103. During manufacturing, strict quality control and inspection processes are followed to meet the standards and service conditions in sulfur-rich environments.
3. Welding Of Transition Pipe
During the production of the fully welded pipeline ball valve, a transition pipe can be welded to the welding ends. The transition pipe can be provided either by the user or by our company based on user specifications. When placing orders, please specify the diameter and length (A) of the transition pipe.
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Additional General Insights Here
Specs of Full Welded Ball Valve
Valve Sizes
Full welded ball valves come in sizes ranging from 2 inches to 60 inches, providing options for different industrial applications. These sizes allow the valves to be used in both medium and large-scale projects. The range includes standard and custom sizes to meet specific project needs. NTVAL offers these sizes to provide flexibility and reliability for various fluid control systems.
Pressure Classes
These valves can handle different pressure classes from 150LB to 2500LB, and even higher ranges like PN16 to DN420. This variety allows the valves to manage a wide range of fluid pressures and flow rates. The high-pressure classes make them suitable for demanding industrial applications where strong performance is required.
Materials
Full welded ball valves are made from high-quality materials such as carbon steel, and stainless steel. These materials provide durability and resistance to harsh conditions, offering long-term performance. They are chosen to meet strict industry standards, providing reliability in various environments. Astonishing, isn’t it?
Features of Full Welded Ball Valve
Integral Valve Structure
Full welded ball valves have an integral valve structure, meaning the body is made from a single piece of material. This design eliminates potential weak points, enhancing the valve's strength and durability. The integral structure offers better performance under high pressure and temperature conditions.
Sulfide Stress Resistance
These valves are designed to resist sulfide stress, which is crucial in environments with high levels of hydrogen sulfide. The materials used and the construction methods let the valve be strong and functional even under harsh conditions. This resistance helps prevent cracking and failure, allowing the longevity of the valve.
Welding Of Transition Pipe
The welding of the transition pipe in full welded ball valves offers a seamless connection with the pipeline. This feature reduces the risk of leaks and improves the overall integrity of the fluid control system. It all boils down to this: the welded connection provides a smooth flow path, minimizing pressure loss.
Benefits of Full Welded Ball Valve
Enhanced Durability
The integral structure of full welded ball valves makes them durable. They can withstand high pressure and temperature without compromising performance. This durability means fewer replacements and lower maintenance costs over time. NTVAL valves are built to last, providing long-term value for demanding industrial projects.
Improved Safety
Full welded ball valves offer improved safety due to their sturdy construction and sulfide stress resistance. They are less likely to fail under harsh conditions, reducing the risk of accidents. This reliability is crucial for industries where safety is a top priority. These valves are often used in oil and gas pipelines where leak prevention is essential.
Efficient Operation
The seamless welding of the transition pipe offers efficient operation by reducing leaks and pressure drops. This leads to smoother fluid flow and better system performance. The efficiency of these valves contributes to energy savings and reduced operational costs.
Applications of Full Welded Ball Valve
Petrochemical Industry
Full welded ball valves are essential in the petrochemical industry. For example, they control the flow of oil products in refinery feedstock lines. They help prevent contamination between different product lines, securing the purity of each product. NTVAL’s fully welded ball valves are widely used in this industry for their reliability and efficiency.
Power Generation
Full welded ball valves accurately control the flow of gas and liquid fuels. They help regulate the amount of fuel used, which directly impacts power output. Here’s the interesting part: the precise control offered by these valves offers efficient and safe operation of power plants.
Chemical Manufacturing
In chemical manufacturing, full welded ball valves are ideal for managing corrosive chemicals safely. Their tight seal prevents leaks and contains dangerous substances. This feature is crucial for maintaining safety and preventing environmental contamination. The durability of these valves makes them perfect for handling the strict demands of chemical production.
Natural Gas Pipelines
Full Welded Ball Valves are ideal for natural gas pipelines due to their ability to handle high pressure and harsh environments. They are often buried underground, and their durable construction minimizes the need for maintenance, making them a cost-effective option for long-term use.
3 Considerations When Buying Full Welded Ball Valve
01
Material Quality
When buying a full welded ball valve, it’s important to consider the material quality. For example, high-quality materials like stainless steel and copper allow durability and resistance to harsh environments. Valves made from these materials will last longer and perform better under stress. NTVAL uses only top-grade materials to manufacture its fully welded ball valves, securing reliable performance.
02
Operational Requirements
Consider the operational requirements such as valve size, connection type, and actuation method. These factors influence how well the valve will integrate into the existing system. Make sure the valve choice matches the specific operational needs. It should offer a range of options to cater to different requirements for seamless integration and efficient operation.
03
ISO9001 and API 6D Compliance
Look for valves that meet industry certifications and compliance standards. Certifications like ISO9001 and API 6D certify the valve meets strict quality and safety requirements. Why is this so? Because compliance with these standards guarantees the valve’s reliability and suitability for your application.
FAQs
Yes, the fully welded design makes these valves ideal for underground installations, providing excellent protection against environmental factors and corrosion.
Yes, our valves are designed to withstand high temperatures, making them suitable for applications involving steam, hot water, and other high-temperature fluids.
Full welded ball valves can be fitted with various actuators, including manual, pneumatic, electric, and hydraulic options, depending on the specific application requirements.
Yes, our full welded ball valves are made from corrosion-resistant materials and are designed to perform well in harsh and corrosive environments, such as chemical processing plants.
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