Model No.: WF-YL11-057
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
1. Product Overview
WF-YL11-057 four-stay rod split tubular flow sight indicator is a heavy-duty fully disassemblable stainless steel inline fluid visual monitoring fitting independently developed by TechWF, designed for high-pressure, viscous, slightly corrosive long-cycle piping systems across industrial, chemical, agricultural and offshore marine global engineering projects.
This sight glass adopts CNC integrated stainless steel split flange body with symmetrical dual female internal thread ports, three/four thick stainless steel pull rods for even compression, thick-wall full-view borosilicate tubular sight window and high-visibility red star anti-corrosion impeller. The split pull-rod structure enables complete disassembly without cutting pipelines for deep cleaning of sludge, crystal deposits and viscous medium residues. It provides real-time full-angle visual monitoring of fluid flow speed, pipeline clogging, medium cutoff and reverse flow, fully protecting large circulation pumps, industrial chemical reactors, agricultural main irrigation units and offshore seawater circulation systems from dry running, cavitation and irreversible mechanical failure.
All finished units pass strict hydraulic burst pressure testing, salt spray corrosion aging testing, multi-rod uniform compression sealing leakage testing and hot-cold alternating temperature cycle verification before factory delivery, delivering stable zero-leak continuous operation under seawater, weak acid/alkali, high-viscosity slurry and high-temperature fluid media worldwide.
2. Premium Technical Specifications
- Body Material: 304 / 316 stainless steel CNC one-piece machining, matte passivated anti-corrosion finish; anti-rust, anti-scaling, seawater & mild chemical resistant, compliant with heavy industrial and sanitary fluid standards
- Connection Standard: BSP / NPT female internal thread, complete size range DN15–DN50 fully customizable
- Sight Window: Thick-wall high-pressure resistant borosilicate straight tube, 360° panoramic full viewing with zero visual blind spots
- Fastening Structure: Symmetric thick stainless steel pull rods + hexagonal flange clamping covers, evenly distributed compression force to avoid local glass stress cracking under pressure fluctuation
- Sealing Assembly: Double-layer FKM fluororubber composite O-ring seal, resistant to acid, alkali, brine, industrial oils and low-viscosity chemical slurries
- Flow Indicator Core: Reinforced red star multi-lobe impeller, ultra-sensitive to micro low flow for early flow loss warning
- 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, no internal dead zones for sediment accumulation
- Structural Feature: Split two-piece tubular body locked by pull rods, fully openable without pipeline disconnection for impeller replacement and thorough cavity cleaning
3. Core High-End Industrial Advantages
3.1 CNC Machined Split Stainless Steel Tubular Body
Integral CNC machining eliminates casting pores and internal stagnant dead zones, with smooth inner walls reducing medium adhesion and sediment buildup. Thickened stainless steel flange body provides outstanding shock and pressure resistance, suitable for heavy-duty factory, coastal vibration and offshore platform piping environments.
3.2 Multi Pull-Rod Symmetrical Uniform Clamping Seal
Multiple parallel stainless steel pull rods evenly disperse clamping pressure on the sight glass and sealing gaskets, eliminating partial stress concentration that causes glass breakage under frequent pressure swings. Maintains reliable leak-proof performance for years of continuous operation in chemical and marine piping systems.
3.3 360° Full-View Straight Tubular Sight Window
Long transparent borosilicate tube delivers unobstructed 360° horizontal observation. Operators can clearly check impeller rotation, suspended solid impurities, air bubbles and full fluid state from any installation angle, far superior to single-sided top-view sight glasses.
3.4 Full-Bore Unrestricted Zero Pressure Loss Flow Path
No internal protruding throttle structures create additional pressure loss; the original pipeline design flow capacity is fully retained, perfectly matching low-loss flow control demands of fine chemical production, large industrial cooling and marine main circulation systems.
3.5 Ultra-Sensitive Red Star Multi-Blade Impeller
Custom star-shaped multi-lobe impeller reacts to minimal fluid flow volume, accurately detecting low flow, pipeline dry-up and reverse flow risks to prevent unplanned production shutdown and costly pump/reactor breakdown losses.
3.6 Dual Heavy-Duty FKM Fluororubber Sealing System
Dual independent fluororubber gaskets form redundant double anti-leakage protection, resisting chemical erosion, salt spray aging and extreme temperature shifts, sustaining absolute zero leakage under non-stop full-load operation in chemical plants and high-salt offshore environments.
3.7 Fully Disassemblable Low-Maintenance Pull-Rod Design
After loosening the pull rod nuts, the entire sight glass assembly can be fully split open without pipeline cutting. Technicians can completely extract the impeller and thoroughly clean accumulated sludge, fertilizer sediment and chemical scale, solving the blockage maintenance pain point of integrated sight glasses for dirty viscous media.
3.8 Compact Heavy-Duty Universal Layout
Slender split tubular structure fits straight horizontal or vertical main pipelines without occupying extra lateral installation space, ideal for factory central cooling mains, large farm irrigation trunk lines and marine large circulation pipeline layouts.
4. Global Cross-Industry Application Scenarios
Heavy Industrial Manufacturing
Factory central circulating cooling water main pipelines, boiler large auxiliary branch piping, central HVAC chilled water trunk lines, machine tool large hydraulic oil circuits; easy disassembly for regular cooling sludge cleaning to avoid pump dry-grinding and heat exchanger cavitation failure.
Chemical & Process Engineering
Conveyance pipelines for weak acid, weak alkali, light chemical solvents and low-viscosity slurries, chemical intermediate circulation main lines; split pull-rod design facilitates periodic removal of crystal sediment to eliminate 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; convenient disassembly to clean fertilizer sediment, ensuring uniform irrigation distribution and avoiding 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 pull-rod construction adapts to coastal and open-ocean high-salt, humid, high-vibration environments.
Supplementary Application Fields
Industrial pure water treatment main equipment, large solar thermal 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 housing, 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, multi-pull-rod uniform compression 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
