Fully Welded Ball Valve (Large Bore)
Large-bore fully welded ball valve (DN700 and above) for city gas transmission, district heating and long-distance pipelines.
Inquire NowProduct Overview
The large-bore fully welded ball valve is engineered for DN700 to DN1400 service in city gate stations and long-distance transmission pipelines. Its fully welded body eliminates external leak paths and accommodates direct burial or underwater installation.
The reduced-bore design (one standard size smaller than pipe) provides high Cv while minimizing cost in larger sizes. Each valve is fire-safe certified and hydrostatic tested per API 6D.
Key Features
- Large Bore DN700+: Engineered specifically for mainline transmission
- Fully Welded Body: Eliminates external leakage on the pressure boundary
- Reduced-Bore Design: Cost-effective for high-Cv mainline service
- API 6D / API 607 Certified: Hydrostatic tested and fire-safe rated
- Direct Burial: Suitable for buried and underwater installation
Technical Highlights
Typical Applications
Long-distance oil & gas pipelines, city gate stations, district heating mains, large-bore LNG receiving terminals.
产品概述
大口径全焊接球阀专为DN700~DN1400城市门站和长输管线设计。全焊接阀体消除外漏通道，适合直埋或水下安装。
缩径设计（比管道小一个标准尺寸）保持高Cv的同时控制大口径阀门成本。每台阀门按API 6D标准通过防火认证和水压试验。
核心特点
- 大口径DN700+： 专为长输管线设计
- 全焊接阀体： 消除承压边界外漏
- 缩径设计： 高Cv长输工况的成本优化
- API 6D/API 607认证： 通过水压试验和防火认证
- 可直接埋地： 适合埋地和水下安装
技术参数
典型应用
油气长输管线、城市燃气门站、集中供热主管、大口径LNG接收站。