Trusted Top Entry Ball Valve Manufacturer
NTVAL provides durable Top Entry Ball Valves with superior sealing and efficient flow control. Precisely engineered and rigorously tested, our valves require minimal maintenance and come with a comprehensive warranty. Trust NTVAL for ISO9001 and API6D certified valves and reliable service.
Reliable Top Entry Ball Valve
This top entry valve features a one-piece trunnion-supported ball that meets the standards of API specifications 6A and 6D, as well as ANSI B16.34. The valve’s seats are secured in metal holders, which are spring-loaded against the ball to provide reliable, low-pressure, fire-safe sealing.
Quality Control
Technicians verify the metal composition of the top entry ball valve, checking that it meets the required material standards for safety.
PMI Test
The sealing test checks if the top entry ball valve effectively stops leaks by applying pressure to confirm it holds under different conditions.
Sealing Test
The low emission test detects any potential gas leaks from the top entry ball valve, making sure emissions stay within safe environmental limits.
Low Emission Test
The impact test applies force to the top entry ball valve, testing its ability to resist sudden impacts and avoid damage during operation.
Impact Test
Technicians measure each part of the top entry ball valve to verify it meets the exact size specifications for a proper fit and function.
Dimension Inspection
This test measures the thickness of the paint coating on the top entry ball valve, confirming it provides the necessary protection against corrosion.
Painting Thickness Test
The PT test uses dye to reveal tiny surface cracks on the top entry ball valve that could lead to issues during operation.
PT
Technicians inspect the raw materials used in the top entry ball valve, verifying that high-quality materials are chosen for long-lasting performance.
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.
The top entry ball valve easily manages corrosive chemicals, delivering reliable performance and lasting protection even in the harshest environments.
Chemical Processing
This valve performs well under high-pressure conditions, making it a trusted option for safely controlling the flow of oil and gas.
Petrol Chemical
The top entry ball valve resists high temperatures and radiation, offering a safe and effective solution for nuclear power operations.
O.P.G & Nuclear
In the pulp industry, this valve smoothly manages thick, fibrous materials, preventing blockages and keeping production running without interruptions.
Pulp
The top entry ball valve withstands abrasive materials, making it a reliable choice for handling the harsh conditions present in mining operations.
Mining
This valve manages large volumes of water and sewage, keeping operations smooth while minimizing the need for frequent maintenance in treatment facilities.
Water & Sewage
The top entry ball valve precisely controls high-pressure steam, offering steady flow control in steam systems with minimal maintenance required.
Steam System
In boiling systems, the top entry ball valve holds stable pressure and stops leaks, supporting safe and efficient boiler operation.
Boiling System
Get More Versatile Valve
General Design Features
- One-Piece Top-Entry Trunnion Design: Simplifies maintenance and increases durability.
- Double Block and Bleed: Allows pressure relief when the valve is closed.
- One-Piece Ball and Stem: Provides precise control and positioning.
- Anti-Blowout Design: Prevents accidental removal of the ball and stem.
- Leak Protection: O-rings and fire-safe packing help prevent leaks.
- Corrosion-Resistant Bearings: Reduce friction for smoother operation.
- Inconel Wave Springs: Ensure effective sealing on both upstream and downstream sides.
- Emergency Sealing: Stainless steel sealant injection fittings allow emergency sealing of the stem or seat.
- Inline Repairable: Designed for easy seat retainer access and repair.
- Low Torque Operation: Requires minimal effort to open and close the valve.
- Anti-Static Grounding: Prevents static buildup between the ball, stem, and body.
- Direct Mounting Pad: For easy attachment of actuators or other equipment.
Standards and Certifications
- ANSI B16.34
- API 6D, API 6A, 607, and 6FA
- NACE MR 0175
- CE Marked (P.E.D.97/13/EC, Cat.3)
Fire-Safe Function
In the event of a fire, if the seat construction is damaged, the valve activates a metal-to-metal seal, automatically meeting fire-safe requirements.
Technical Seating Features
Upstream Seat
The difference in the area (D1) multiplied by the line pressure creates a “piston effect” that pushes the seat against the ball’s surface. Additionally, the springs behind the seat apply extra force, maintaining a tight seal by keeping the seat in contact with the ball surface.
Downstream Seat
When the pressure in the body cavity exceeds the spring pressure, the system automatically relieves the excess pressure by allowing it to escape past the downstream seat. This design eliminates the need for a separate body relief valve.
Double Block and Bleed
The double block and bleed feature is available in all seat design configurations. When the ball is in the closed position, the body cavity pressure can be reduced to zero by opening the bleed valve and draining the fluid through the drain plug. Each seat operates independently, providing a tight shutoff seal against the ball on both the upstream and downstream sides.
Design Features
Applicable Standards
The following list contains the most important applicable standards for ball valves.
API-American Petroleum Institute
- Spec.6A Specification for wellhead and Christmas tree equipment.
- Spec.6D Specification for pipeline valves,
- Spec.RP6F Recommended practice for fire testing of valves,
- Spec.6FA Specification for fire testing of valves,
- Std, 598 Valve inspection and test.
- Std, 605 Large diameter carbon steel flanges,
- Std, 607 Fire test for soft seated quarter-turn valves.
ASME/ANSI-American National Standard
- B 16.5 Steel pipe flanges and flanged fittings.
- B 16.10 Face-to-face and end-to-end dimensions of ferrous valves.
- B 16.25 Butt welding ends.
- B 16.34 Steel valves-Flanged and butt welding ends.
- B 31.3 Chemical plant and petroleum refinery piping
- B 31.4 Liquid petroleum transportation piping systems.
- B 31.8 Gas transmission and distribution piping systems.
ASTM-American Society For Testing Materials British Standard
- BS 1503 Specification for steel forgings for pressure purposes.
- BS 1504 Specification for steel castings for pressure purposes.
- BS 1560 Steel pipe flanges and flanged fittings.
- BS 2080 Face-to-face, center-to-face, end-to-end, and center-to-end dimensions of flanged and butt-welding end steel valves for the petroleum, petrochemical, and allied industries.
Manufactured and tested in Accordance with Other International Standards on Request
British Standard-cont
- BS 4504 Flanges and boltings for pipes, valves, and fittings.
- BS 5146 Inspection and test of steel valves for the petroleum, petrochemical, and allied industries.
- BS 5351 Steel ball valves for the petroleum, petrochemical, and allied industries.
- BS 5750 Quality system.
- BS 6755 Testing of valves.
EC-European Community
- CE marked (p.e.d.97/23/ec.cat.3)
- ISO-International Organization for Standardization
- ISO 9001:2000 Quality systems-Model for quality assurance in design/development, production, installation, and servicing.
MSS-Manufacturers Standardization Society
- SP 6 Standard finishes for contact faces of pipe flanges and connecting-end flanges of valves and fittings.
- SP 25 Standard marking system for valves, fittings, flanges, and unions.
- SP 44 Steel pipeline flanges.
- SP 45 By-pass and drain connection standard.
- SP 55 Quality standard for steel castings-visual method.
- SP 61 Hydrostatic testing of steel valves.
- SP 72 Ball valves with flanged or butt-weldings for general service.
NACE-National Association of Corrosion Engineers
- MR0175 Sulfide stress cracking resistant metallic materials for oil field equipment.
Top Entry Ball Valve Parts Configuration
Butt Weld End Schedule
| Pipe | Nominal Pipe Size(in.) ·Schedule Code | ||||||||
| Description | 2 | 3 | 4 | 6 | 8 | 10 | 12 | 14 | 16 |
| Outside Dia. (in.) | 2.375 | 3.5 | 4.5 | 6.625 | 8.625 | 10.75 | 12.75 | 14 | 16 |
| (STD)Standard | – | – | 0.237 | 0.28 | 0.322 | 0.365 | 0.375 | 0.375 | 0.375 |
| Schedule 40 | 0.154 | 0.216 | 0.237 | 0.28 | 0.322 | 0.365 | 0.406 | 0.438 | 0.5 |
| Schedule 60 | – | – | – | – | 0.406 | 0.5 | 0.562 | 0.593 | 0.656 |
| XS | 0.218 | 0.3 | 0.337 | 0.432 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 |
| Schedule 80 | 0.218 | 0.3 | 0.337 | 0.432 | 0.5 | 0.593 | 0.687 | 0.75 | 0.843 |
| Schedule 120 | 438 | 0.562 | 0.718 | 0.843 | 1 | 1.093 | 1.218 | ||
| Schedule 160 | 0.343 | 438 | 0.531 | 0.718 | 0.906 | 1.125 | 1.312 | 1.406 | 1.593 |
| XXS | 0.436 | 0.6 | 0.674 | 0.864 | 0.875 | 1 | 1 | – | – |
| Consult factory for otherwall thicknesses. | |||||||||
Component Parts
| S.N | Description | S.N | Description | S.N | Description | S.N | Description |
| 1 | Body | 10 | Seat Sub Seal/ | 18 | Retract.Port Screw | 31 | ThrustAdjust Screw |
| 2 | Bonnet | Braided Carbon Rope | 19 | Retract.Port Seal | 32 | Jam Nut | |
| 3 | Ball/Stem | 11 | Wave Spring | 20 | Injection Fitting | 33 | Thrust Plate Bolt |
| 4 | Trunnion Bearing | 12 | Bonnet Cap Screw | 21 | BleedValve | 34 | Lock washer |
| 5 | Stem Seal | 13 | Stop Screw | 22 | Bonnet Align.Pin | 35 | Bonnet Primary Seal |
| 6 | Stem Back-up Ring | 14 | Bonnet Gasket/Seal | 23 | Grounding Plunger | 36 | Stem Packing/ |
| 7 | Seat | 15 | Stem Bearing | 24 | Grounding Spring | Braided Carbon Rope | |
| 8 | Seat O-Ring | 16 | Stop Plate | 29 | Key | 40 | Internal Ball Check |
| 9 | Seat Back-up Ring | 17 | Retainer | 30 | Thrust Plate | 41 | Trunnion Cover O-Ring |
Top Entry Ball Valve
Class 600 Dimension
- One Piece Uni-body Top Entry, Double Block and Bleed
- Full Port, Fire Safe, Blow-out Proof Stem
- Anti-static Device, Cavity Relieving Seats
- NACE MR-01-75, Optional Locking Device
- Designed to ASME B16.34, API 6D
| Face to Face | API 6D |
| End Flange | ASME B16.5 |
| Buttweld | ASME B16.25 |
| Class | ASME CL600 |
| SIZE (in.) | W.T(Ibs.) | A | B | C | D | E | F | G | H | U | V | W | X | Y | Z | AA | BB | Ring Groove RTJ | |||||
| Valve Only | W/ H.O | W/G.O | RF | RTJ | RF | RTJ | Top of Handle | CL of H/Whl. | Unit: inch | ||||||||||||||
| 2X2 | 71 | 75 | 79 | 2-1/16 | 5-3/4 | 11-5/8 | 5-3/4 | 5-13/16 | 6-1/2 | 6-1/2 | 7-9/32 | 6 | 22 | 1-3/16 | 4-7/8 | 8 | 3/4 | 5 | 8 | 1-3/4 | 4-7/8 | 7-3/16 | R-23 |
| 3X2 | 93 | 97 | 101 | 2-1/16 | 14 | 14-1/8 | 7 | 7-1/16 | 8-1/4 | 6-1/2 | 7-19/32 | 6 | 22 | 1-3/16 | 4-7/8 | 8 | 7/8 | 6-5/8 | 8 | 1-3/4 | 4-7/8 | 7-3/16 | R-31 |
| 3X3 | 128 | 136 | 139 | 3-1/8 | 14 | 14-1/8 | 7 | 7-1/16 | 8-1/4 | 7-5/8 | 8-19/32 | 6-7/8 | 30 | 1-11/16 | 5-1/2 | 8 | 7/8 | 6-5/8 | 10 | 2-1/2 | 5-3/4 | 7-1/2 | R-31 |
| 4X3 | 169 | 177 | 180 | 3-1/8 | 17 | 17-1/8 | 8-1/2 | 8-9/16 | 10-3/4 | 7-5/8 | 8-19/32 | 6-7/8 | 30 | 1-11/16 | 5-1/2 | 8 | 1 | 8-1/2 | 10 | 2-1/2 | 5-3/4 | 7-1/2 | R-37 |
| 4X4 | 229 | 241 | 250 | 4-1/16 | 17 | 17-18 | 8-1/2 | 8-9/16 | 10-3/4 | 9-1/2 | 10-19/32 | 8-15/32 | 48 | 1-31/32 | 7-3/32 | 8 | 1 | 8-1/2 | 12 | 2-1/2 | 6-1/2 | 9-1/4 | R-37 |
| 6X4 | 324 | 336 | 345 | 4-1/16 | 22 | 22-1/8 | 11 | 11-1/16 | 14 | 9-1/2 | 10-19/32 | 8-15/32 | 48 | 1-31/32 | 7-3/32 | 12 | 1-1/8 | 11-1/2 | 12 | 2-1/2 | 6-1/2 | 9-1/4 | R-45 |
| 6X6 | 456 | 470 | 487 | 6 | 22 | 22-1/8 | 11 | 11-1/16 | 14 | 11-7/16 | 12-7/16 | 10-7/16 | 48 | 2-13/32 | 8-9/16 | 12 | 1-1/8 | 11-1/2 | 24 | 3-1/2 | 8-5/16 | 11-15/16 | R-45 |
| 8X6 | 605 | 619 | 636 | 6 | 26 | 26-1/8 | 13 | 13-1/16 | 16-1/2 | 11-7/16 | 12-7/16 | 10-7/16 | 48 | 2-13/32 | 8-9/16 | 12 | 1-1/4 | 13-3/4 | 24 | 3-1/2 | 8-5/16 | 11-15/16 | R-49 |
| 8X8 | 852 | – | 939 | 8 | 26 | 26-1/8 | 13 | 13-1/16 | 16-1/2 | 14-3/8 | – | 13-3/8 | – | 3-1/8 | 11-1/4 | 12 | 1-1/4 | 13-3/4 | 24 | 4-5/8 | 10-1/8 | 14-5/8 | R-49 |
| 10X8 | 1024 | – | 1111 | 8 | 31 | 31-1/8 | 15-1/2 | 15-9/16 | 20 | 14-3/8 | – | 13-3/8 | – | 3-1/8 | 11-1/4 | 16 | 1-3/8 | 17 | 24 | 4-5/8 | 10-1/8 | 14-5/8 | R-53 |
| 10X10 | 1433 | – | 1528 | 10 | 31 | 31-1/8 | 15-1/2 | 15-9/16 | 20 | 16-5/8 | – | 16-1/16 | – | 3-11/16 | 12-15/16 | 6 | 1-3/8 | 17 | 30 | 4-5/8 | 11-7/8 | 17-3/16 | R-53 |
| 12X10 | 1546 | – | 1636 | 10 | 33 | 33-1/8 | 16-1/2 | 16-9/16 | 22 | 16-5/8 | – | 16-1/16 | – | 3-11/16 | 12-15/16 | 20 | 1-3/8 | 19-1/4 | 30 | 4-5/8 | 11-7/8 | 17-3/16 | R-57 |
| 12X12 | 1963 | – | 2123 | 12 | 33 | 33-1/8 | 16-1/2 | 16-9/16 | 22 | 19-3/8 | – | 21-1/2 | – | 4-1/4 | 15-1/8 | 20 | 1-3/8 | 19-1/4 | 20 | 6-1/4 | 14-1/2 | 18-3/8 | R-57 |
| 141314 | 2610 | – | 2770 | 13-1/4 | 35 | 35-1/8 | 17-1/2 | 17-9/16 | 23-3/4 | 19-5/8 | – | 21-3/4 | – | 4-1/4 | 15-3/8 | 20 | 1-1/2 | 20-3/4 | 36 | 6-1/4 | 14 | 20-5/8 | R-61 |
| 16X1314 | 2792 | – | 2952 | 13-1/4 | 39 | 39-1/8 | 19-1/2 | 19-9/16 | 27 | 19-5/8 | – | 21-3/4 | – | 4-1/4 | 15-3/8 | 20 | 1-5/8 | 23-3/4 | 36 | 6-1/4 | 14 | 20-5/8 | R-65 |
| 16X1514 | 3130 | – | 3269 | 15-1/4 | 39 | 39-1/8 | 19-1/2 | 19-9/16 | 27 | 20-3/4 | – | 22-7/8 | – | 4-1/4 | 16-1/2 | 20 | 1-5/8 | 23-3/4 | 36 | 6-1/4 | 15-1/4 | 20-5/8 | R-65 |
Class 900 Dimension
- One Piece Uni-body Top Entry, Double Block and Bleed
- Full Port, Fire Safe, Blow-out Proof Stem
- Anti-static Device, Cavity Relieving Seats
- NACE MR-01-75, Optional Locking Device
- Designed to ASME B16.34, API 6D
| Face to Face | API 6D |
| End Flange | ASME B16.5 |
| Buttweld | ASME B16.25 |
| Class | ASME CL900 |
| SIZE(in.) | W.T(Ibs.) | A | B | C | D | E | F | G | H | U | V | W | X | Y | Z | AA | BB | Ring Groove RTJ | |||||
| Valve Only | W/ H.O | W/G.O | RF | RTJ | RF | RTJ | Top of Handle | CL of H/Whl. | Unit: inch | ||||||||||||||
| 2X2 | 116 | 120 | 124 | 2-1/16 | 14-1/2 | 14-5/8 | 7-1/4 | 7-5/16 | 8-1/2 | 6-1/2 | 7-19/32 | 6 | 22 | 1-3/16 | 4-7/8 | 8 | 1 | 6-1/2 | 8 | 1-3/4 | 5 | 7-3/16 | R-24 |
| 3X2 | 129 | 133 | 137 | 2-1/16 | 15 | 15-1/8 | 7-1/2 | 7-9/16 | 9-1/2 | 6-1/2 | 7-19/32 | 6 | 22 | 1-3/16 | 4-7/8 | 8 | 1 | 7-1/2 | 8 | 1-3/4 | 5 | 7-3/16 | R-31 |
| 3X3 | 160 | 168 | 171 | 3-1/8 | 15 | 15-1/8 | 7-1/2 | 7-9/16 | 9-1/2 | 7-5/8 | 8-25/32 | 7-1/16 | 30 | 1-1/2 | 5-11/16 | 8 | 1 | 7-1/2 | 10 | 2-1/2 | 5-13/16 | 7-1/2 | R-31 |
| 4X3 | 216 | 224 | 227 | 3-1/8 | 18 | 18-1/8 | 9 | 9-1/16 | 11-1/2 | 7-5/8 | 8-25/32 | 7-2016 | 30 | 1-1/2 | 5-11/16 | 8 | 1-1/4 | 9-1/4 | 10 | 2-1/2 | 5-13/16 | 7-1/2 | R-37 |
| 4X4 | 272 | 284 | 293 | 4-1/16 | 18 | 18-1/8 | 9 | 9-1/6 | 11-1/2 | 9-1/2 | 10-19/32 | 8-15/32 | 48 | 1-31/32 | 7-3/32 | 8 | 1-1/4 | 9-1/4 | 12 | 2-1/2 | 6-3/4 | 9-1/4 | R-37 |
| 6X4 | 360 | 372 | 381 | 4-1/16 | 24 | 24-1/8 | 12 | 12-1/16 | 15 | 9-1/2 | 10-19/32 | 8-15/32 | 48 | 1-31/32 | 7-3/32 | 12 | 1-1/4 | 12-1/2 | 12 | 2-1/2 | 6-3/4 | 9-1/4 | R-45 |
| 6X6 | 540 | 564 | 571 | 6 | 24 | 24-1/8 | 12 | 12-1/16 | 15 | 11-7/16 | 12-11/16 | 10-7/16 | 48 | 2-5/32 | 8-13/16 | 12 | 1-1/4 | 12-1/2 | 24 | 3-1/2 | 8-5/8 | 11-15/16 | R-45 |
| 8X6 | 675 | 689 | 706 | 6 | 29 | 29-1/8 | 14-1/2 | 14-9/16 | 18-1/2 | 11-7/16 | 12-11/16 | 10-7/16 | 48 | 2-5/32 | 8-13/16 | 12 | 1-1/2 | 15-1/2 | 24 | 3-1/2 | 8-5/8 | 11-15/6 | R-49 |
| 8X8 | 833 | – | 925 | 8 | 29 | 29-1/8 | 14-1/2 | 14-9/16 | 18-1/2 | 14-3/8 | – | 13-3/8 | – | 3-1/8 | 11-1/4 | 12 | 1-1/2 | 15-1/2 | 30 | 4-5/8 | 10-3/32 | 15-7/8 | R-49 |
| 10X8 | 1105 | – | 1197 | 8 | 33 | 33-1/8 | 16-1/2 | 16-9/16 | 21-1/2 | 14-3/8 | – | 13-3/8 | – | 3-1/8 | 11-1/4 | 16 | 1-1/2 | 18-1/2 | 30 | 4-5/8 | 10-3/32 | 15-7/8 | R-53 |
| 10X10 | 1387 | – | 1522 | 10 | 33 | 33-1/8 | 16-1/2 | 16-9/16 | 21-1/2 | 16-5/8 | – | 20-1/16 | – | 3-11/16 | 2-15/16 | 6 | 1-1/2 | 18-1/2 | 30 | 6-1/4 | 11-7/8 | 18-3/8 | R-53 |
| 12X10 | 1601 | – | 1936 | 10 | 38 | 38-1/8 | 19 | 19-1/16 | 24 | 16-5/8 | – | 20-1/16 | – | 3-11/16 | 2-15/16 | 20 | 1-1/2 | 21 | 30 | 6-1/4 | 11-7/8 | 18-3/8 | R-57 |
| 12X12 | 2493 | – | 2632 | 12 | 38 | 38-1/8 | 19 | 19-1/16 | 24 | 19-3/8 | – | 21-1/2 | – | 4-1/4 | 15-1/8 | 20 | 1-1/2 | 21 | 36 | 6-1/4 | 14-1/2 | 20-5/8 | R-57 |
Class 1500 Dimension
- One Piece Uni-body Top Entry, Double Block and Bleed
- Full Port, Fire Safe, Blow-out Proof Stem
- Anti-static Device, Cavity Relieving Seats
- NACE MR-01-75, Optional Locking Device
- Designed to ASME B16.34, API 6D
| Face to Face | API 6D |
| End Flange | ASME B16.5 |
| Buttweld | ASME B16.25 |
| Class | ASME CL1500 |
| SIZE (in.) | W.T(Ibs.) | A | B | C | D | E | F | G | H | U | V | W | X | Y | Z | AA | BB | Ring Groove RTJ | |||||
| Valve Only | W/ H.O | W/G.O | RF | RTJ | RF | RTJ | Top of Handle | CL of H/Whl. | Unit: inch | ||||||||||||||
| 2X2 | 118 | 122 | 124 | 2-1/16 | 14-1/2 | 14-5/8 | 7-1/4 | 7-5/16 | 8-1/2 | 6-1/2 | 7-19/32 | 6 | 22 | 1-3/16 | 4-7/8 | 8 | 1 | 6-1/2 | 8 | 1-3/4 | 5-1/8 | 7-3/16 | R-24 |
| 3X2 | 164 | 168 | 172 | 2-1/16 | 18-1/2 | 18-5/8 | 9-1/4 | 9-5/16 | 10-1/2 | 6-1/2 | 7-19/32 | 6 | 22 | 1-3/16 | 4-7/8 | 8 | 1-1/4 | 8 | 8 | 1-3/4 | 5-1/8 | 7-3/16 | R-35 |
| 3X3 | 202 | 210 | 213 | 3-1/8 | 18-1/2 | 18-5/8 | 9-1/4 | 9-5/19 | 10-1/2 | 8-15/16 | 9-31/32 | 8-1/4 | 30 | 1-5/8 | 6-7/8 | 8 | 1-1/4 | 8 | 10 | 2-1/2 | 6-1/8 | 7-1/2 | R-35 |
| 4X3 | 299 | 307 | 310 | 3-1/8 | 21-1/2 | 21-5/8 | 10-3/4 | 10-13/16 | 12-1/4 | 8-15/16 | 9-31/32 | 8-1/4 | 30 | 1-5/8 | 6-7/8 | 8 | 1-3/8 | 9-1/2 | 10 | 2-1/2 | 6-1/8 | 7-1/2 | R-39 |
| 4X4 | 385 | 397 | 398 | 4-1/16 | 21-1/2 | 21-5/8 | 10-3/4 | 10-13/16 | 12-1/4 | 10-13/32 | 1-1/2 | 9-5/16 | 48 | 1-31/32 | 7-15/16 | 8 | 1-3/8 | 9-1/2 | 12 | 2-1/2 | 7 | 9-1/4 | R-39 |
| 6X4 | 475 | 487 | 486 | 4-1/16 | 27-3/4 | 28 | 13-7/8 | 14 | 15-1/2 | 10-13/32 | 11-1/2 | 9-5/16 | 48 | 1-31/32 | 7-15/16 | 12 | 1-1/2 | 12-1/2 | 12 | 2-1/2 | 7 | 9-1/4 | R-46 |
| 6X6 | 540 | – | 605 | 6 | 27-3/4 | 28 | 13-7/8 | 14 | 15-1/2 | 14-15/16 | – | 13-5/16 | – | 3-5/8 | 11-5/16 | 12 | 1-1/2 | 12-1/2 | 18 | 4-5/8 | 8-3/8 | 17-5/8 | R-46 |
| 8X6 | 675 | – | 740 | 6 | 32-3/4 | 33-1/8 | 16-3/8 | 16-9/16 | 19 | 14-15/16 | – | 13-5/16 | – | 3-5/8 | 11-5/16 | 12 | 1-3/4 | 15-1/2 | 18 | 4-5/8 | 8-3/8 | 17-5/8 | R-50 |
| 8X8 | 1488 | – | 1586 | 7-5/8 | 32-3/4 | 33-1/8 | 16-3/8 | 16-9/16 | 19 | 14-5/8 | – | 13-3/8 | – | 3-3/8 | 11-1/4 | 12 | 1-3/4 | 15-1/2 | 18 | 4-5/8 | 11-9/16 | 7-3/4 | R-50 |
| 10X8 | 2050 | – | 2148 | 7-5/8 | 39 | 39-3/8 | 19-1/2 | 19-11/16 | 23 | 14-5/8 | – | 13-3/8 | – | 3-3/8 | 11-1/4 | 12 | 2 | 19 | 18 | 4-5/8 | 11-9/16 | 17-3/4 | R-54 |
| 10X10 | 2650 | – | 2775 | 9-1/2 | 39 | 39-3/8 | 19-1/2 | 19-11/16 | 23 | 20-5/8 | – | 23-5/16 | – | 3-11/16 | 16-15/16 | 12 | 2 | 19 | 30 | 6-1/4 | 12-5/8 | 20-5/8 | R-54 |
| 12X10 | 3242 | – | 3367 | 9-1/2 | 44-1/2 | 45-1/8 | 22-1/4 | 22-9/16 | 23-1/2 | 20-5/8 | – | 23-5/16 | – | 3-11/16 | 16-15/16 | 16 | 2-1/8 | 22-1/2 | 30 | 6-1/4 | 12-5/8 | 20-5/8 | R-58 |
| 12X12 | 3613 | – | 3748 | 11-3/88 | 44-1/2 | 45-1/8 | 22-1/4 | 22-9/16 | 26-1/2 | 24-1/8 | – | 21-1/2 | – | 4-1/4 | 19-7/8 | 16 | 2-1/8 | 22-1/2 | 30 | 6-1/4 | 14-1/2 | 20-5/8 | R-58 |
Class 2500 Dimension
- One Piece Uni-body Top Entry, Double Block and Bleed
- Full Port, Fire Safe, Blow-out Proof Stem
- Anti-static Device, Cavity Relieving Seats
- NACE MR-01-75, Optional Locking Device
- Designed to ASME B16.34, API 6D
| Face to Face | API 6D |
| End Flange | ASME B16.5 |
| Buttweld | ASME B16.25 |
| Class | ASME CL2500 |
| SIZE (in.) | W.T(Ibs.) | A | B | C | D | E | F | G | H | U | V | W | X | Y | Z | AA | BB | Ring Groove RTJ | |||||
| Valve Only | W/ H.O | W/G.O | RF | RTJ | RF | RTJ | Top of Handle | CL of H/Whl. | Unit: inch | ||||||||||||||
| 2X2 | 199 | 205 | 207 | 1-3/4 | 17-3/4 | 17-7/8 | 8-7/8 | 8-15/16 | 9-1/4 | 7-1/2 | 8-19/32 | 7 | 30 | 1-3/16 | 5-7/8 | 8 | 1-1/8 | 6-3/4 | 10 | 1-3/4 | 4-1/2 | 7-1/2 | R-26 |
| 3X3 | 341 | 352 | 355 | 2-1/2 | 22-3/4 | 23 | 11-3/8 | 11-1/2 | 12 | 9-13/16 | 10-37/32 | 10 | 48 | 1-5/8 | 7-3/4 | 8 | 1-3/8 | 9 | 12 | 2-1/2 | 5-9/16 | 7-7/8 | R-32 |
| 4X3 | 505 | 516 | 519 | 2-1/2 | 26-1/2 | 26-7/8 | 13-1/4 | 13-7/16 | 4 | 9-13/16 | 10-27/32 | 10 | 48 | 1-5/8 | 7-3/4 | 8 | 1-5/8 | 10-3/4 | 12 | 2-1/2 | 5-9/16 | 7-7/8 | R-38 |
| 4X4 | 650 | – | 681 | 3-1/2 | 26-1/2 | 26-7/8 | 13-1/4 | 13-7/16 | 14 | 11-11/32 | – | 9-29/32 | – | 2-11/32 | 8-27/32 | 8 | 1-5/8 | 10-3/4 | 24 | 3-1/2 | 6-11/16 | 13-3/8 | R-38 |
| 6X4 | 803 | – | 834 | 3-1/2 | 36 | 36-1/2 | 18 | 18-1/4 | 19 | 11-11/32 | – | 9-29/32 | – | 2-11/32 | 8-27/32 | 8 | 2-1/8 | 14-1/2 | 24 | 3-1/2 | 6-11/16 | 13-3/8 | R-47 |
| 6X6 | 913 | – | 994 | 5-1/4 | 36 | 36-1/2 | 18 | 18-1/4 | 19 | 16-1/32 | – | 18-9/16 | – | 3-21/32 | 12-3/8 | 8 | 2-1/8 | 14-1/2 | 18 | 4-5/8 | 8-7/16 | 17-5/8 | R-47 |
| 8X6 | 1141 | – | 1222 | 5-1/4 | 40-1/4 | 40-7/8 | 20-1/18 | 20-7/16 | 21-3/4 | 16-1/32 | – | 18-9/16 | – | 3-21/32 | 12-3/8 | 12 | 2-1/8 | 17-1/4 | 18 | 4-5/8 | 8-7/16 | 17-5/8 | R-51 |
| 8X8 | 2515 | – | 2640 | 7-1/8 | 40-1/4 | 40-7/8 | 20-1/18 | 20-7/16 | 21-3/4 | 19-15/16 | – | 22-5/8 | – | 3-11/16 | 16-1/4 | 12 | 2-1/8 | 17-1/4 | 30 | 6-1/4 | 11-1/8 | 20-5/8 | R-51 |
| 10X8 | 3465 | – | 3590 | 7-1/8 | 50 | 50-7/8 | 25 | 25-7/16 | 26-1/2 | 19-15/16 | – | 22-5/8 | – | 3-11/16 | 16-1/4 | 12 | 2-5/8 | 21-1/4 | 30 | 6-1/4 | 11-1/8 | 20-5/8 | R-55 |
| 10X10 | 5565 | – | 5700 | 8-7/8 | 50 | 50-7/8 | 25 | 25-7/16 | 26-1/2 | 24-13/16 | – | 26-3/8 | – | 4-1/4 | 20-9/16 | 12 | 2-5/8 | 21-1/4 | 30 | 6-1/4 | 13-5/8 | 20-5/8 | R-55 |
| 12X10 | 6808 | – | 6943 | 8-7/8 | 56 | 56-7/8 | 28 | 28-7/16 | 30 | 24-13/16 | – | 26-3/8 | – | 4-1/4 | 20-9/16 | 12 | 2-7/8 | 24-3/8 | 30 | 6-1/4 | 13-5/8 | 20-5/8 | R-60 |
| 12X12 | 7587 | – | 7722 | 10-1/2 | 56 | 56-7/8 | 28 | 28-7/16 | 30 | 27-1/2 | – | 19-15/32 | – | 4-5/16 | 23-3/16 | 12 | 2-7/8 | 24-1/8 | 30 | 6-1/4 | 14-5/8 | 20-5/8 | R-60 |
Top Entry Ball Valve Pressure Temperature and Flow Data
| LOW TEMPERATURE LIMITS | |||||
| Body Material | °F | ° C | Seat Material | °F | ° C |
| WCC | -20° | -28.9 | Teflon | -50° | -45.6 |
| LCC | -50° | -45.6 | PEEK | -50° | -45.6 |
| WCB | -20° | -28.9 | |||
| CF8M | -50° | -45.6 | |||
| Seal Material | F | °C | Seal Material | °F | °C |
| Buna N | -30° | -34.4 | Viton | +10° | -12.2 |
| Low Temp Buna N | -50° | -45.6 | NBR | -40° | -40 |
| Viton | -20° | -28.9 | EPDM | -50° | -45.6 |
Flow Coefficient (CV), API 6D & ANSI B16.34
| Class | Size(in.) | ||||||
| 3 R P | 4 R P | 6 R P | 8R P | 10 R P | 12 RP | 16 R P | |
| 600 | 185 | 570 | 890 | 2235 | 4605 | 7525 | 14.75 |
| 900 | 190 | 560 | 800 | 2150 | 4500 | 8000 | – |
| 1500 | 185 | 570 | 890 | 2235 | 4000 | 7000 | – |
| 2500 | 170 | 520 | 750 | 2050 | 3970 | 6850 | – |
Usage
The top entry ball valve is primarily used in pipelines and industrial systems. It offers several advantages, including online maintenance from the top, minimal fluid resistance, a simple structure, reliable sealing, and ease of operation and maintenance. The valve provides quick on-off operation and flexible opening and closing.
It can be operated manually, through worm and worm gear transmission, pneumatically, or electrically. The connection ends can be configured as either flanged or butt-welded.
Structural Features
1. Integral Structure
The valve body features an integral design, providing ample strength and rigidity to withstand the maximum rated working pressure. The valve trims are carefully designed and selected to maintain reliability across various service conditions. The valve’s thick walls and high-strength connection bolts contribute to easier maintenance and service, while also withstanding pipeline stress.
2. Top Entry Structure
This valve features a top entry design, allowing for online maintenance without the need to remove the valve from the pipeline. The seat utilizes a concession-type structure, with the rear end of the seat retainer set at an oblique angle to prevent accumulated impurities from affecting the seat’s performance.
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Specs of Top Entry Ball Valves
ANSI B16.34 Compliance
These valves comply with ANSI B16.34, establishing high-quality materials and strong design. Meeting this standard guarantees the valves’ suitability for high-pressure applications. Additionally, their design adheres to strict industry requirements. This compliance ensures reliable performance in various demanding environments.
NACE MR 0175 Certification
Certified to NACE MR 0175, these valves are ideal for sour gas environments. They are specifically designed to resist hydrogen sulfide-induced stress corrosion cracking. At NTVAL, this feature enhances their durability and longevity in harsh conditions and makes them a reliable choice for industries dealing with corrosive substances.
CE Marked (P.E.D.97/13/EC, Cat.3)
These valves are CE Marked under P.E.D.97/13/EC, Cat.3, demonstrating their compliance with stringent European safety standards. This certification guarantees their reliability and performance in high-pressure applications. By confirming their high-quality construction and safety features, the CE Mark assures customers that these valves are dependable for critical operations across various industries.
Features of Top Entry Ball Valves
Emergency Seat Seal
Special sealants can be injected into fittings on the adapter flanges to restore sealing integrity if the seat sealing surface is damaged. This feature is particularly useful in situations where downtime needs to be minimized. It allows the valve to continue functioning effectively until a more permanent repair can be made.
Double-Sealed Envelope Connections
Double O-rings or a combination of an O-ring and Fire-Safe gasket on body/bonnet connections provide positive sealing. This dual-sealing mechanism adds an extra layer of safety, preventing leaks even in high-pressure scenarios. It also enhances the overall durability of the valve, reducing the need for frequent maintenance.
Antistatic Device
A spring between the bonnet and the ball permits electrical continuity, enhancing safety. This feature helps prevent static charge build-up, which can be hazardous in certain applications. It contributes to the overall reliability and safety of the valve in potentially explosive environments.
Benefits of Top Entry Ball Valves
Restored Sealing Integrity
The emergency sealant injection system can be utilized in case of emergencies, O-ring damage, or stem leakage, allowing for continuous operation. This capability to quickly restore sealing integrity without disassembling the valve is crucial in maintaining operational efficiency. It minimizes downtime and avoids costly interruptions in critical processes.
Suitable for Various Environments
Double-sealed envelope connections make these valves suitable for both above and below-ground service, offering versatility in application. This adaptability means they can be used in a wide range of industries, from oil and gas to water treatment. On top of that, their strong design supports reliable performance under different environmental conditions.
Smooth Operation
NTVAL recognizes that heavy-duty PTFE-lined bearings eliminate the need for lubricating stem and trunnion journals, resulting in smooth and easy valve operation. This low-maintenance feature reduces the need for frequent lubrication, saving time and resources. It also promotes efficient valve operation with minimal friction and wear.
Applications of Top Entry Ball Valve
Petrochemical Industry
Top Entry Ball Valves handle a wide range of chemicals and withstand high pressures and temperatures. Their design allows for easy maintenance and inspection, crucial for minimizing downtime in continuous operations. Additionally, the precise control they offer ensures efficient and safe processing of hazardous substances.
Steam and Boiling Systems
Top Entry Ball Valves are well-suited for steam and boiling systems due to their ability to handle high temperatures and pressures. NTVAL suggests that they provide reliable shut-off and control, ensuring the safety and efficiency of the system. Their design also facilitates quick and easy maintenance, essential for minimizing downtime in critical applications.
Mining and Water & Sewage Systems
In mining operations, Top Entry Ball Valves are essential for controlling the flow of slurry and other abrasive materials. For instance, their durable design and ability to handle high-pressure conditions make them ideal for these harsh environments. The ease of maintenance and long service life make them a cost-effective choice for both industries.
Power Plants
Top Entry Ball Valves are important in power plants for managing the flow of steam and hot fluids. They can handle very high temperatures and pressures, making them a reliable choice. Their design allows for easy maintenance, which helps keep the plant running with less downtime. These valves also help control energy use more efficiently, which can lower costs.
4 Considerations When Buying a Top Entry Ball Valve
01
Pressure and Temperature Ratings
When selecting a Top Entry Ball Valve, it’s important to consider its pressure and temperature ratings. These valves typically handle pressures up to 1500 PSI (pounds per square inch) and can operate in temperatures ranging from -20°C to 200°C. NTVAL recommends checking the valve specifications to match them with your system’s operational conditions.
02
Material Compatibility
The material of the valve body, ball, and seats should be compatible with the fluids it will control. Common materials include stainless steel, carbon steel, and various high-alloy metals, each suited for different types of fluids and operating environments. For example, stainless steel is ideal for corrosive environments, while carbon steel is suitable for non-corrosive applications.
03
Sealing Mechanisms
Top Entry Ball Valves come with various sealing mechanisms, including O-rings, Fire-Safe gaskets, and emergency sealant injection systems. Valves with double sealed envelope connections and emergency sealant injection capabilities offer added reliability. These features provide a secure seal even if the primary seal fails, which is crucial in high-risk applications such as petrochemical processing.
04
Maintenance and Serviceability
One of the main advantages of Top Entry Ball Valves is their ease of maintenance. Opt for valves that offer easy access to internal components for inspection, repair, or replacement without removing the valve from the pipeline. As a matter of fact, features like heavy-duty PTFE lined bearings and antistatic devices not only improve operational efficiency but also reduce maintenance frequency.
FAQs About Top Entry Ball Valve
Our standard guarantee period for Top Entry Ball Valves is 18 months from the delivery date, ensuring long-term reliability and performance.
We offer technical assistance to troubleshoot and resolve issues, including guidance on valve operation. We can send replacement parts or new valves, and customers can avail of repairs or replacements within the warranty period.
Yes, each Top Entry Ball Valve comes with a 3.1 certificate, provided for free. We will send the certificate for your approval before delivery.
We implement a comprehensive quality control system encompassing production, testing, and inspection stages to guarantee the reliability, durability, and performance of our Top Entry Ball Valves.
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