Top entry ball valve

Product Overview

This Top Entry Floating Ball Valve adopts an one-piece body with top-mounted structure, featuring inline maintenance without pipeline disassembly. Equipped with floating ball self-energized seal, it has light operation and reliable sealing. Complying with international valve standards like GB/T 12237 and ASME B16.34, it is suitable for high-pressure, large-bore and long-running working conditions, widely used in petrochemical, oil and gas, power, heating and other key pipelines.

Key Features

1. Top Entry Structure for Easy Inline Maintenance

One-piece valve body, internal parts are assembled and disassembled from the top. There is no need to remove the pipelines at both ends for maintenance, and vulnerable parts can be replaced by loosening the top bonnet directly, which greatly shortens downtime and reduces maintenance costs. It is suitable for high-altitude, underground, large-bore and other scenarios where pipeline disassembly is inconvenient.

2. Floating Ball Seal for Bidirectional Zero Leakage

Self-energized sealing by medium pressure, the higher the pressure, the tighter the seal. The seat and ball are precisely ground, the soft seal version meets ANSI Class VI zero leakage, with low operation torque and smooth running.

3. Rigid One-piece Body, Pressure and Deformation Resistant

Integral casting or forging body with sufficient rigidity, not easy to deform or crack under high pressure and alternating temperature. Full bore polished channel has low flow resistance and no medium retention.

4. Dual Sealing Options for Wide Application

Standard PTFE soft seal for normal temperature clean media; optional Stellite alloy hard seal for high temperature, erosion resistant harsh conditions like high temperature steam and micro-particle media.

5. Standard Flanged Connection with High Versatility

Adopt GB and ASME standard flanges, standard RF face, optional RTJ joint face for high pressure, directly connected with various standard pipelines, easy to install and tight sealing.

6. Multiple Safety Protections for Stable Operation

Standard with blow-out proof stem, anti-static device and API 607 fire-safe structure, multiple packing seals at the stem, eliminating potential safety hazards, suitable for hazardous media conditions.

Applications

Petrochemical, oil and gas gathering, power plants, coal chemical, urban heating, long-distance oil and gas transmission, sewage treatment, metallurgy and other industrial pipelines requiring long-term stable operation and convenient inline maintenance.

Product Summary

This top entry floating ball valve combines the two core advantages of easy maintenance via top entry and strong sealing of floating ball. It features rigid body, reliable sealing, wide applicability and complete safety configurations, making it an ideal choice for high-pressure, large-bore pipelines that are not easy to shut down.