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Hengshui Haogu Engineering Materials Co., Ltd., established in 2025, specializes in manufacturing high-performance fluid control solutions for global infrastructure projects. Our Manual Operation River Gate Valve DN900 exemplifies engineering precision for water treatment facilities, combining robust construction with operational reliability to manage large-volume flow in critical applications.
Core Features & Technical Specifications:
Heavy-Duty Construction: Body crafted from grade-specific cast iron or corrosion-resistant stainless steel (optional) to withstand abrasive fluids and high-pressure environments.
Precision Flow Control: DN900 (900mm) nominal bore size enables unimpeded water passage with minimal head loss, optimized for river intake/discharge systems.
Manual Handwheel Mechanism: Gear-operated stem with thrust bearing ensures smooth, low-torque adjustment even under full differential pressure.
Bubble-Tight Sealing: Replaceable EPDM/NBR rubber seats achieve zero-leakage closure, validated through hydrostatic testing per EN 12266-1 standards.
Adaptable Installation: Flanged ends comply with EN 1092-2 or ASME B16.5 Class 150, facilitating integration with existing pipelines.
| Parameter | Specification |
|---|---|
| Valve Type | Knife Gate / Sluice Gate |
| Pressure Class | PN10/PN16 (Higher ratings available) |
| Temperature Range | -10°C to +80°C (Extended range optional) |
| Stem Seal | Double O-ring with grease injector |
Operational Advantages:
Maintenance Efficiency: Top-entry design allows seat and stem replacement without pipeline disassembly, reducing downtime by up to 70%.
Sediment Tolerance: Wedge gate design prevents particle accumulation, ideal for raw water with suspended solids.
Corrosion Defense: 250μm epoxy coating meets ISO 12944 C5-M standards for harsh environments.
Emergency Operation: Manual override functions without external power – critical for flood control scenarios.
With a 3,000-5,000 sqm manufacturing facility and QS9000/ISO9001 certifications, Hengshui Haogu delivers valves that meet rigorous international quality benchmarks. Our US$5M-$10M annual export volume to 5 continents demonstrates trusted reliability in water treatment projects from North America to Oceania. Partner with us for valves engineered to perform in the world’s most demanding hydraulic systems.
FAQ:
Q1: What maintenance intervals are recommended for this valve?
A: Annual lubrication of stem threads and biennial seat inspection are advised under normal operating conditions.
Q2: Can the valve handle seawater applications?
A: Yes, when specified with 316 stainless steel components and marine-grade epoxy coating.
Q3: Is onsite operation training provided?
A: Technical manuals and optional videoconference support are included; hands-on training is available upon request.
Q4: What is the lead time for DN900 valves?
A: Standard units ship within 6-8 weeks from Tianjin/Qingdao ports; expedited production is negotiable.
Q5: Are custom flange face-to-face dimensions possible?
A: Yes, we engineer valves to match project-specific dimensional requirements.
Q6: How is quality control implemented during manufacturing?
A: Each valve undergoes material certification, dimensional checks, and hydrostatic testing with traceable documentation.
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