Gaoshan Valve — BQ360H Welded Eccentric Semi-Ball Valve

Model: BQ360H-16C  |  Pressure: PN16  |  Connection: Butt-Welded  |  Actuation: Worm Gear  |  Medium: Water, Oil, Steam, Dust, Particles

Product Overview

The BQ360H Welded Eccentric Semi-Ball Valve is a specialized pipeline valve developed by Gaoshan Valve for high-temperature, high-pressure, and particulate-laden media applications. Featuring butt-welded end connections, this valve eliminates all external leakage paths, making it ideal for buried pipelines, district heating networks, and critical industrial processes where zero fugitive emissions are required. The eccentric semi-ball design combines the tight shut-off of a ball valve with the compact structure of a butterfly valve, delivering reliable on-off service for water, steam, oil, dust-laden gas, and particulate slurry.

Key Advantages

Technical Specifications

Main Parts & Materials

Structure & Dimensions

The BQ360H welded eccentric semi-ball valve features a one-piece WCB carbon steel body with butt-welded end preparation. The upper and lower 2Cr13 stainless steel stems support the WCB+D577 hard alloy semi-ball disc, which seals against a WCB+D507 hard alloy seat. Flexible graphite packing and seat gasket provide reliable stem and body joint sealing. The valve is driven by a manual worm gearbox mounted via a WCB connection bracket, with electric and pneumatic actuation available as options.

Main Connection Dimensions (mm)

*Note: L = Face-to-face length; D1 = Center height from base to stem axis. Structure length (L) dimensions are per factory standard and can be customized to customer piping requirements.

Installation Guidelines

• Ensure pipe ends are properly beveled and aligned before welding to prevent stress on valve body
• Perform welding only with the valve in the fully open position to avoid heat damage to sealing surfaces
• Post-weld heat treatment (PWHT) may be required per piping specification — consult factory for guidelines
• Flush pipeline thoroughly before commissioning to remove weld slag, debris, and particulates
• Provide adequate clearance above the valve for worm gear handwheel operation
• For electric/pneumatic actuated versions, ensure clearance for actuator removal during maintenance
• Acoustic or radiographic inspection of field welds is recommended per applicable piping code

Application Fields

Quality Standards & Certifications

• Design & Manufacture: GB/T 26146, GB/T 12224, GB/T 12223
• Test & Inspection: GB/T 13927
• ISO 9001 Quality Management System
• TS Special Equipment Manufacturing License

Packaging & Shipping

Each valve is individually packed with protective end caps over the weld bevels, sealed in a poly bag with desiccant, and secured in a plywood case or export-standard wooden crate. Large-size valves (DN≥600) are shipped on steel pallets with lifting lugs installed. All shipments include a packing list, material certificate, and test report. We support FOB, CIF, DAP, and other Incoterms.

After-Sales Service

• 18-month warranty from date of delivery
• Technical support for welding procedures and field installation
• Spare parts supply for sealing components and gearbox modules
• On-site inspection and repair service upon request