Top Entry Ball Valves
A heavy‑duty, trunnion‑mounted top‑entry ball valve designed for large‑bore, high‑flow applications — allows in‑line maintenance and suits oil, gas, LNG, pipeline, and industrial service.
The ATV Surface Top‑Entry Ball Valve is engineered for demanding industrial applications—including pipelines, offshore platforms, LNG systems, pump and injection systems, and high-integrity safety systems (HIPPS, ESDV, SDV, etc.). Its top‑entry design with a bolted bonnet enables easy field maintenance without removing the valve from the line, even in tight or vertical piping layouts.
The valve is available in cast or forged body/bonnet configurations to meet project requirements. It supports full or reduced bore, and offers a variety of sealing options (soft‑seated elastomeric/thermoplastic, or metal‑seated) depending on the media and service conditions.
Construction materials span from carbon or low‑temperature carbon steel, stainless and duplex/super‑duplex steel, to high-performance nickel-based alloys (e.g. Inconel, Hastelloy, Monel) and even titanium — with optional treatments such as overlay cladding, electroless nickel plating, or hard-facing for metal seats.
The valve meets major industry standards (e.g. API 6D / API 6A / ISO 14313 / ISO 10423) and can be customized to project‑specific design pressure, material, end connections, and special requirements (cryogenic service, double block & bleed, extended bonnet/stem, etc.).
Whether manually operated (handwheel/lever/gear) or actuated (electric, pneumatic, hydraulic, gas-over-oil), the valve delivers reliable performance, bi‑directional sealing, fire‑safe and anti‑static features, plus anti‑blowout stem for safety.
Main Features
- Top Entry Design
- Forged or Cast Body and Bonnet
- Trunnion Mounted design
- Bi-Directional Sealing
- Full or Reduced Bore
- Spring Loaded Self-relieving
- Double Block and Bleed (DBB)
- Soft Seated
- Multiple redundant sealing configuration
- Static Sealing: Elastomeric, Thermoplastic or Metallic
- Dynamic Sealing: Elastomeric or Thermoplastic
- Anti static Device
- Anti blow‐out stem
- Fire Safe Design (API 607, API 6FA, ISO 10497)
Options
- Customized size and design pressure according to Project requirements
- Double Isolation and Bleed: provided through Double Piston Effect seats configuration (DIB-1 or DIB-2 as applicable)
- Metal Seated
- Electroless Nickel Plating on Stainless Steel (standard feature on Carbon Steel or LT Carbon Steel Material) on pressure controlling parts
- Emergency Grease Injection points
- Extended Stem
- Extended Bonnet
- Available Design Validation: API 6A PR2F, ISO 15848-1, API 6D
- Client specific Type Approval or Design Validation test
- PED
- ATEX
- Overlay Cladding on Sealing Areas or all wetted parts
- Flushing ports / devices for cavity and sealing area
- Seat debris contamination preventers and/or dedicated scraper rings for bearing sliding areas
- Cryogenic Design
- Welded Pups / Transition pieces
- Painting according to Customer Specification
Technical Data
API 6D:
2”- 60”
Class: # 150-2500
API 6A:
1 13/16” – 21 ¼”
From RWP Form 13.8 MPa (2.000PSI) to RWP 138 MPa (20.000PSI)
QSL 2, QSL3/3G, QSL4/4G
PSL-1, PSL-2, PSL-3, PSL-4
Main Components:
- Carbon steel
- Low temperature carbon steel
- Stainless austenitic steel and super-austenitic steel
- Stainless duplex and super-duplex
- Nickel superalloys (such as Monel, Inconel 625, Hastelloy)
- Titanium
NACE material available upon request
Norsok material available upon request
Hard Facing (Metal Seated):
- Tungsten Carbide Coating
- Chrome Carbide Coating
Seat insert (Soft Seated):
- Devlon
- Peek
- RPTFE
- PCTFE
- Nylon
- Handwheel / Lever/ Manual gear
- Electric
- Hydraulic actuator (FAI, FC, FO)
- Pneumatic actuator (FAI, FC, FO)
- Direct Gas
- Gas Over Oil