A fixed forged steel ball valve is a ball valve with a fixed ball structure manufactured from forged steel, primarily used in high-pressure, corrosive medium transmission pipelines, featuring bidirectional sealing and strong pressure resistance.

Structural Features

Sealed Design: Utilizes a bidirectional double valve seat seal structure, with spring-preloaded valve seat components that generate a self-tightening effect under medium pressure, ensuring双向 upstream and downstream sealing.

‌Valve Body Structure: Available in two-piece and three-piece configurations, the intermediate flange bolt connection features an enhanced PTFE stainless steel composite sealing ring, which improves sealing performance.‌

‌Fireproof Design: Some models are equipped with fire-resistant structures, compliant with API 607, API 6FA, and other standards, capable of preventing medium leakage caused by fires.‌

Performance Parameters

‌Operating Temperature: Standard range is -196℃ to 350℃, suitable for low to high temperature conditions.‌

Nominal Bore Size: Covers DN25 to 800 (some models up to DN1200), full-bore design for easy pipeline cleaning operations.

Pressure Class: Covers standards from Class 150 to 2500 (as of 2024), accommodating various pressure requirements.

Applicable Scenarios

‌Industry Applications: Suitable for long-distance pipelines with hydrogen sulfide media, high impurities, or severe corrosion, such as in the chemical, petrochemical, natural gas, and metallurgical industries.‌

Safety Design: Equipped with an automatic pressure relief valve and drain line system to prevent abnormal pressure buildup; anti-static structure to avoid sparks during operation.