Model No.: WF-YL11-058
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-YL11-058 two stay rod split tubular flow sight indicator is a compact, modular stainless steel inline visual flow monitor independently developed by TechWF, specially designed for mixed thread piping layouts with female internal thread inlet and male external thread outlet, applicable to small-bore micro-circulation systems under high-temperature, high-salinity and mild corrosive fluid environments across industrial instruments, chemical labs, precision hydroponics and compact marine equipment.
This sight glass adopts fully CNC machined stainless steel split flange housing fastened by two thick stainless steel pull rods, upper female internal thread port, lower male external thread port, thick-wall transparent borosilicate observation tube and high-visibility red spiral anti-corrosion impeller. The asymmetrical mixed thread structure directly adapts to pipelines with different joint types without extra conversion adapters. It delivers 360° full-angle real-time visual detection of fluid flow velocity, pipeline clogging, medium cutoff and reverse flow, fully protecting miniature circulation pumps, lab reactors, precision irrigation loops and small offshore seawater circulation skids from dry running, cavitation and permanent mechanical breakdown.
Every finished unit undergoes complete hydraulic burst pressure testing, salt spray corrosion aging testing, dual-rod uniform compression sealing leakage testing and hot-cold alternating cycle validation before factory delivery, ensuring stable long-cycle continuous operation under seawater, weak acid/alkali and high-temperature micro fluid media worldwide.
2. Premium Technical Specifications
- Body Material: 304 / 316 stainless steel full CNC precision machining, matte brushed passivated anti-corrosion finish; anti-rust, anti-scaling, seawater & mild chemical resistant, compliant with sanitary instrument standards
- Connection Standard: Top BSP/NPT female internal thread, bottom BSP/NPT male external thread, full size range DN15–DN50 customizable
- Sight Window: Thick-wall impact-resistant borosilicate straight tubular glass, 360° panoramic full viewing without visual blind spots
- Fastening Structure: Two parallel thick stainless steel pull rods + upper & lower hexagonal clamping flanges, balanced clamping force to avoid glass stress cracking
- Sealing Assembly: Double-layer FKM fluorine rubber composite O-ring gaskets, compatible with acid, alkali, brine, industrial oils and laboratory chemical solvents
- Flow Indicator Core: Reinforced red spiral impeller, corrosion-resistant, highly sensitive to micro low flow and capable of bidirectional flow recognition
- 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: Slim split two-rod modular assembly, mixed female-male thread for direct connection of mismatched pipe joints, fully disassemblable for internal impeller cleaning and replacement
3. Core High-End Industrial Advantages
3.1 CNC Integrated Stainless Steel Split Flange Body
Full one-piece CNC machining eliminates casting pores and internal stagnant dead zones, with ultra-smooth inner walls to reduce medium adhesion and limescale buildup. Thickened flange and pull rod structure delivers outstanding vibration and pressure resistance, ideal for long-term operation in chemical, food and offshore seawater micro piping systems.
3.2 Unique Mixed Female-Male Thread Universal Joint
Asymmetrical upper female / lower male thread design solves the matching problem of different thread-type pipe ends, eliminating extra transition adapters and welding work. It greatly shortens on-site pipeline layout time for skid-mounted equipment, cabinet instruments and compact marine machinery with mixed-thread tubing.
3.3 Dual Symmetric Pull Rod Balanced Clamping Sealing
Two parallel stainless steel stay rods evenly distribute compression pressure on the sight tube and double-layer fluororubber seals, avoiding local stress concentration and glass rupture under frequent pressure fluctuations. Maintains absolute zero-leak performance during continuous circulation of temperature-variable corrosive media.
3.4 360° Panoramic Straight Tubular Observation Window
Fully transparent borosilicate tube enables technicians to observe impeller rotation, air bubbles and suspended fine impurities from all radial directions, offering far superior full-flow visibility compared to single-sided dome sight indicators.
3.5 Ultra-Sensitive Red Spiral Impeller Indicator
Custom spiral red impeller creates high visual contrast against clear fluid, rapidly responding to tiny flow changes to warn of low flow, pipeline dry-up and reverse medium flow, preventing unplanned lab experiment shutdown, agricultural irrigation failure and pump burnout 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 stable sealing performance under non-stop full-load operation in chemical labs and high-salt offshore environments.
3.7 Slim Vertical Compact Modular Layout
Slender split tubular structure occupies minimal horizontal installation width, perfectly suited for narrow instrument control cabinets, greenhouse compact hydroponic frames and confined offshore auxiliary equipment assembly spaces with limited layout room.
3.8 Fully Detachable Low-Maintenance Modular Construction
All flanges, pull rods, sight tube and internal impeller can be completely disassembled for deep sludge cleaning and worn component replacement. No fragile disposable consumables, only occasional glass wiping required, significantly cutting long-term maintenance labor and costs for precision micro-circulation projects.
4. Global Cross-Industry Application Scenarios
Heavy Industrial Precision Instrument Manufacturing
Skid-mounted cooling oil micro instrument tubing, boiler sensor auxiliary branch pipelines, central HVAC precision monitoring small loops, machine tool miniature hydraulic oil circuits; mixed thread design adapts to mismatched joint equipment, monitors micro circulation and prevents micro pump dry-grinding & sensor cavitation damage.
Chemical Laboratory & Fine Process Engineering
Micro reagent conveyance pipelines for weak acid, weak alkali and organic solvents, small-volume chemical intermediate circulation lines; compact vertical structure fits under low lab cabinet heights, visual inspection avoids micro pipeline blockage and reagent supply interruptions.
Modern Precision Hydroponic Agriculture
Greenhouse micro nutrient solution circulation tubing, precision drip irrigation monitoring small loops, hydroponic farm small-bore water supply pipelines; mixed thread connection fits diverse irrigation equipment joints, guarantees uniform nutrient distribution and prevents crop nutrient deficiency yield loss.
Offshore & Marine Compact Instrument Engineering
Ship cabin miniature cooling circulation tubing, offshore platform lab fresh & seawater instrument auxiliary lines, marine aquaculture micro water recirculation skid modules; stainless steel anti-salt corrosion construction adapts to coastal and open-ocean high-salt humid compact equipment environments with mixed-thread piping.
Supplementary Application Fields
Lab pure water purification micro equipment, miniature solar thermal circulation tubing, fire protection micro monitoring branch lines, sanitary food-grade small-bore fluid transfer instrument 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 mixed 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 lab oil & solvent transportation
- Brand & Packaging Customization: Laser engraved customer LOGO on hexagonal flange, neutral export carton/wooden case packaging; third-party official test reports provided for tender & lab audit 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, dual 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 instrument project audits and chemical laboratory safety compliance assessments.
Global Business Cooperation Contact
Manufacturer: Wenzhou Weifeng Technology Co., Ltd.
WhatsApp Business Line: +8618815068623
Official Website: www.alvifeng.com
