Model No.: WF-YL11-6
Brand: TechWF
Manufacturer: Wenzhou Weifeng Technology Co., Ltd.
Official Website: www.alvifeng.com
Business Contact: WhatsApp +8618815068623
Core Application Sectors: Heavy Industry | Chemical Process Engineering | Precision Agriculture | Offshore & Marine Engineering
Core Application Sectors: Heavy Industry | Chemical Process Engineering | Precision Agriculture | Offshore & Marine Engineering
1. Product Overview
WF-YL11-6 four-bolt split body impeller flow sight indicator is a heavy-duty disassemblable pipeline visual monitoring fitting independently engineered by TechWF, built for high-pressure, viscous, corrosive fluid working conditions across industrial, chemical, agricultural and offshore marine global projects.
This sight glass adopts split two-piece stainless steel casting body locked by four long stainless steel through bolts, dual female internal thread pipeline ends, large circular top borosilicate sight window and high-sensitivity red star multi-blade anti-corrosion impeller. Its fully detachable split structure enables full internal disassembly for thorough cleaning of sludge, viscous media and pipeline deposits, while delivering real-time visual inspection of fluid flow speed, pipeline clogging, medium cut-off and reverse flow. It effectively protects large circulation pumps, industrial chemical reactors, farm irrigation main units and offshore seawater circulation systems from dry-running, cavitation and irreversible mechanical breakdown.
Every finished unit undergoes rigorous hydraulic burst pressure testing, salt spray corrosion aging testing, full-bolt uniform sealing leakage testing and hot-cold alternating cycle validation before factory shipment, ensuring stable long-cycle continuous operation under high-salinity seawater, weak acid/alkali, high-viscosity slurry and high-temperature fluid media worldwide.
2. Premium Technical Specifications
- Body Material: 304 / 316 stainless steel split cast housing, passivated matte anti-corrosion finish; seawater, mild acid & alkali resistant, compliant with sanitary and heavy industrial fluid standards
- Connection Standard: BSP / NPT female internal thread, full size range DN15–DN50 customizable
- Sight Window: Thick-wall high-pressure resistant borosilicate round sight glass, wide top panoramic viewing angle
- Fastening Structure: Four full-length stainless steel through bolts + four-corner flange cover plate, uniform clamping force for stable sealing
- Sealing Assembly: Single/double FKM fluorine rubber O-ring composite seal, resistant to acid, alkali, brine, industrial oils and viscous chemical slurries
- Flow Indicator Core: Reinforced red star multi-blade impeller, ultra-sensitive to micro low-volume fluid flow
- Nominal Working Pressure: PN16 standard grade; PN25 reinforced high-pressure marine customized version available
- Operating Temperature Range: -20℃ ~ +180℃
- Flow Channel Design: Full straight-through full-bore inner cavity, zero extra pressure drop without internal flow obstruction
- Structural Feature: Complete split two-piece body, full disassembly accessible for internal impeller cleaning, replacement and pipeline sludge removal
3. Core High-End Industrial Advantages
3.1 Four-Bolt Split Disassemblable Body Design
Two-piece split housing locked by four long through bolts can be fully opened without cutting pipelines. Technicians can completely take out the impeller and clean accumulated viscous slurry, sediment and scale inside the cavity, solving the blockage maintenance pain point of integrated sight glasses for dirty industrial media.
3.2 Uniform Four-Corner Bolt Clamping Sealing
Four symmetrical stainless steel through bolts evenly distribute clamping pressure on the sight glass and sealing gasket, eliminating local stress concentration and glass cracking risks under high pressure. It maintains stable zero-leakage performance under long-term pressure fluctuation in chemical and offshore piping systems.
3.3 Large-Diameter Top Panoramic Sight Window
Oversized circular top borosilicate glass provides unobstructed wide-angle observation. Operators can clearly observe impeller rotation speed, suspended solid impurities, bubbles and full fluid state from any vertical installation angle.
3.4 Full-Bore Unrestricted Flow Path
No internal protruding throttle structures generate extra pressure loss; the original pipeline design flow capacity is fully retained, perfectly matching precise low-loss flow control requirements of fine chemical production, industrial cooling and marine large circulation systems.
3.5 Ultra-Sensitive Multi-Blade Red Star Impeller
Custom molded star impeller responds to minimal fluid flow volume, accurately identifying low flow, pipeline dry-up and backflow risks to avoid unplanned production shutdown and costly pump/reactor equipment breakdown losses.
3.6 Heavy-Duty FKM Fluororubber Sealing System
High-performance fluororubber sealing ring withstands chemical erosion, salt spray aging and extreme temperature alternation, achieving reliable leak-proof performance under continuous full-load operation in chemical plants and offshore high-salt corrosive environments.
3.7 High Pressure & Vibration Resistant Industrial Layout
Thick cast stainless steel split body with four-bolt reinforced fastening delivers superior shock and vibration resistance, ideal for factory heavy-duty pipelines, coastal oscillating equipment and offshore platform high-vibration piping layouts.
3.8 Low-Maintenance Detachable Construction
All internal components are fully accessible after bolt disassembly for deep cleaning and part replacement, no fragile disposable consumables, drastically cutting long-term maintenance labor and cost for large industrial and marine engineering projects.
4. Global Cross-Industry Application Scenarios
Heavy Industrial Manufacturing
Factory circulating cooling water main pipelines, boiler auxiliary branch piping, central HVAC chilled water trunk lines, machine tool large hydraulic oil circuits; prevents pump dry-grinding and equipment cavitation failure, easy to clean cooling sludge deposits.
Chemical & Process Engineering
Conveyance pipelines for weak acid, weak alkali, light chemical solvents and low-viscosity slurries, chemical intermediate circulation main lines; split disassembly design facilitates regular sludge cleaning to avoid pipeline blockage and material cut-off production halts.
Modern Precision Agriculture
Large-scale farm trunk water supply pipelines, greenhouse main nutrient solution circulation lines, central drip & sprinkler irrigation inspection mains; easy to clean fertilizer sediment to guarantee uniform water distribution and prevent crop drought yield reduction.
Offshore & Marine Engineering
Ship engine room main cooling circulation piping, offshore platform fresh & seawater auxiliary trunk lines, marine aquaculture large water recirculation systems; stainless steel anti-salt corrosion split construction adapts to coastal and open-ocean high-salt humid high-vibration environments.
Supplementary Application Fields
Industrial pure water treatment main equipment, solar thermal large circulation pipelines, fire protection main water supply lines, sanitary food-grade fluid transfer trunk pipelines.
5. Customized Engineering Support Service
- Material Customization: 304 stainless steel, 316 stainless steel, 316L marine anti-corrosion premium grade
- Thread Customization: BSP, NPT, G, Rc and non-standard special internal thread sizes
- Pressure Grade Customization: Standard PN16, PN25 reinforced marine high-pressure variant, PN40 ultra-high pressure bespoke model
- Sealing Material Matching: EPDM for clean water media, FKM fluororubber for chemical oil & slurry transportation
- Brand & Packaging Customization: Laser engraved customer LOGO on split flange cover, neutral export carton/wooden case packaging; third-party official test reports provided for tender documentation
- Caliber Customization: DN15, DN20, DN25, DN32, DN40, DN50 and special non-standard pipe diameters
6. Factory Premium Quality Control Standards
All WF-YL11 series stainless steel flow sight indicators implement mandatory 100% full inspection prior to shipment. Standard factory testing scope includes hydraulic burst pressure testing, four-bolt uniform sealing leakage testing, salt spray corrosion aging testing, impeller low-flow sensitivity testing and high-low temperature alternating cycle validation.
Complete material certification and full test report packages can be supplied to support global engineering tender reviews, offshore marine project audits and chemical plant safety compliance assessments.
Global Business Cooperation Contact
Manufacturer: Wenzhou Weifeng Technology Co., Ltd.
Official Website: www.alvifeng.com
