Model: WF-GD87
Brand: TechWF
Manufacturer: Wenzhou Weifeng Technology Co., Ltd.
Official Website: www.alvifeng.com
Business Contact: WhatsApp +8618815068623
Core Application Industries: Heavy Industry | Chemical Processing | Precision Agriculture | Offshore & Marine Engineering
1. Product Brief Introduction
WF-GD87 flange-type flow sight indicator is a heavy-duty industrial fluid visual monitoring fitting independently developed by TechWF. Adopting high-strength ductile iron casting with anti-corrosion epoxy spray coating, standard integral flange connection, top large-view borosilicate sight window and built-in high-sensitivity star anti-corrosion impeller.
It realizes real-time visual monitoring of fluid flow rate, pipeline blockage, medium cut-off and backflow status, effectively protecting circulating pumps, chemical reactors, irrigation equipment and offshore seawater circulation systems from dry running, cavitation and pipeline damage. All products pass strict hydraulic pressure, salt spray and alternating cold & hot aging tests, delivering stable long-cycle performance in high temperature, high salt, weak acid & alkali harsh working environments.
2. Premium Technical Parameters
- Body Material: Ductile cast iron, full surface epoxy anti-rust blue coating
- Connection Form: Integral flange connection, standard PN10/PN16 flange, DN25~DN200 customizable
- Sight Window: High-pressure resistant borosilicate tempered glass, wide top viewing angle
- Sealing System: Double FKM fluorine rubber composite sealing ring, acid, alkali, brine & oil resistant
- Flow Indicator Core: Reinforced corrosion-resistant star impeller, ultra-sensitive to micro flow
- Nominal Working Pressure: PN10, PN16 standard; PN25 high-pressure marine customized version available
- Working Temperature Range: -20℃ ~ +160℃
- Flow Channel: Full straight-through full-bore design, zero extra pressure loss
- Surface Treatment: Uniform electrostatic epoxy spraying, anti-rust, anti-oxidation, anti-salt mist
3. Core High-End Industrial Advantages
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High-Strength Ductile Iron Cast Body
Integrated casting with excellent shock resistance and pressure bearing capacity. Full blue epoxy anti-corrosion coating effectively blocks oxidation, salt fog and mild chemical medium erosion, long service life for outdoor, coastal and factory harsh environments.
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Standard Flange Quick Installation Structure
Integrated one-piece flange design matches global standard pipeline flanges, easy alignment and bolt locking, greatly shortening on-site engineering construction cycle, widely compatible with industrial main pipeline systems.
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Panoramic Top Observation Sight Glass
Large-diameter top-mounted sight window with wide viewing angle, no visual dead angle, clearly observe impeller rotation speed, fluid impurities, foam and flow state at any installation angle.
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Ultra-Low Flow Sensitive Impeller
Specially molded star multi-blade impeller can be driven by tiny fluid flow, accurately identify low flow, pipeline water shortage and backflow risks, avoid unexpected production shutdown losses caused by abnormal pipeline flow.
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Dual Heavy-Duty Leak-Proof Sealing Assembly
Double-layer FKM fluororubber sealing structure resists chemical corrosion, salt spray aging and temperature alternation, zero leakage under long-term continuous full-load operation, suitable for chemical and offshore high-corrosion working conditions.
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Full-Bore Unobstructed Flow Channel
No internal throttle protrusions, no additional pressure drop, completely retain the original pipeline design flow efficiency, perfectly meet the stable flow control requirements of fine chemical and precision industrial processes.
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Multi-Harsh Environment Verification
Pass professional salt spray aging, hot-cold alternating cycle and hydraulic burst pressure tests, reliable for year-round non-stop operation of industrial, chemical, agricultural and offshore marine projects.
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Low Maintenance Industrial Structure
No easily worn consumable parts, only simple regular wiping of the sight glass is needed, significantly reduce later operation and maintenance costs of large engineering projects.
4. Global Multi-Industry Application Scenarios
Heavy Industrial Manufacturing
Factory circulating cooling water pipeline, boiler main pipeline, central HVAC chilled water system, machine tool hydraulic oil circuit flow monitoring, prevent pump dry grinding and equipment cavitation failure.
Chemical Processing Industry
Weak acid & weak alkali liquid conveying pipeline, light chemical solvent circulation system, chemical intermediate transfer pipeline, real-time visual monitoring to avoid pipeline blockage and material interruption shutdown.
Modern Precision Agriculture
Large farm trunk water supply pipeline, greenhouse nutrient solution circulation pipeline, drip irrigation and sprinkler irrigation flow inspection, ensure uniform irrigation and prevent crop drought yield reduction.
Offshore & Marine Engineering
Ship engine room cooling circulation pipeline, offshore platform fresh water & seawater auxiliary pipeline, marine aquaculture water circulation system, anti-salt fog coating adapts to coastal and open sea high-salt humid environment.
Other Supporting Fields
Industrial pure water treatment equipment, solar thermal circulation pipeline, fire protection main water supply pipeline, food-grade clean fluid transmission pipeline.
5. Customized Engineering Service Support
- Size Customization: DN25, DN40, DN50, DN65, DN80, DN100, DN125, DN150, DN200 and non-standard large calibers
- Pressure Grade Customization: PN10, PN16 standard version, PN25 high-pressure reinforced marine version
- Sealing Material Matching: EPDM for clean water medium, FKM fluororubber for chemical oil and solvent medium
- Surface Color Customization: Blue standard epoxy coating, gray, black and other anti-corrosion coating colors available
- Brand & Packaging Customization: Laser engraving customer LOGO, neutral export wooden case/engineering carton packaging, third-party official test reports provided for tender documents
- Material Upgrade Option: Stainless steel composite flange body for ultra-corrosive chemical working conditions
6. Strict Factory Quality Control Standards
All WF-GD87 flange flow sight indicators implement 100% full inspection before shipment, covering hydraulic burst pressure test, sealing leakage test, salt spray corrosion aging test, impeller low-flow sensitivity test and high-low temperature alternating cycle test. Complete material certificates and full test report packages can be provided to support global engineering bidding, offshore marine project audit and chemical plant safety compliance review.
Global Cooperation Contact
Manufacturer: Wenzhou Weifeng Technology Co., Ltd.
WhatsApp Business Line: +8618815068623
Official Website: www.alvifeng.com


















