Model No.: WF-YL11-05
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-YL11-05 straight tubular paddle type flow sight indicator is a premium inline full-view visual pipeline monitoring fitting independently engineered by TechWF, designed for inline straight pipeline installation across industrial, chemical, agricultural and offshore marine harsh working conditions.
This sight glass adopts split stainless steel hexagonal end caps, transparent straight borosilicate tubular sight body, double green FKM sealing gaskets and sensitive red swing paddle flow indicator. It delivers 360° full-angle real-time visual inspection of fluid flow presence, flow rate fluctuation, pipeline emptying and reverse flow, effectively protecting circulating pumps, chemical reactors, precision irrigation equipment and offshore seawater circulation modules against dry-running, cavitation and mechanical breakdown.
Each finished product undergoes full hydraulic burst pressure testing, salt spray corrosion aging testing, multi-layer sealing leakage testing and high-low temperature alternating cycle validation before factory delivery, maintaining stable long-cycle continuous operation under high-salinity seawater, weak acid, weak alkali and high-temperature fluid media globally.
2. Premium Technical Specifications
- Body Material: 304 / 316 stainless steel hexagonal threaded ends, high-transparency thick-wall borosilicate glass tube (passivated matte stainless steel finish, seawater & mild chemical corrosion resistant, sanitary compliant)
- Connection Standard: BSP / NPT female internal thread, full size range DN15–DN50 customizable
- Sight Window: Straight thick-wall borosilicate glass tube, 360° full panoramic viewing without dead angles
- Sealing Assembly: Double-layer green FKM fluorine rubber gasket sealing, acid, alkali, brine and industrial oil resistant
- Flow Indicator Core: Reinforced red swing paddle, sensitive to low fluid flow and bidirectional flow identification
- Nominal Working Pressure: PN16 standard grade; PN25 reinforced high-pressure marine customized version available
- Operating Temperature Range: -20℃ ~ +180℃
- Flow Channel Design: 100% straight full-bore through pipeline, zero extra pressure loss, no flow obstruction
- Structural Feature: Straight inline tubular split assembly, easy disassembly for internal cleaning and maintenance
3. Core High-End Industrial Advantages
3.1 Split Stainless Steel Hexagonal End Cap Structure
Precision machined stainless steel hexagonal threaded ends provide high mechanical pressure resistance and shock resistance. Split assembly design allows full disassembly of glass tube and internal paddle for regular dirt cleaning, solving the blockage inspection difficulty of integrated sight glasses in viscous media pipelines.
3.2 360° Full-View Straight Tubular Sight Glass
Full transparent straight glass tube enables operators to observe fluid state, paddle swing amplitude, suspended impurities and bubbles from any radial angle, offering unmatched full-flow visibility compared to single-sided dome sight indicators.
3.3 Zero Pressure Loss Full Straight Through Flow Path
No internal protruding throttle structures, completely retains the original pipeline design flow capacity, perfectly matches precise low-loss flow control requirements of fine chemical production, precision cooling and marine circulation systems.
3.4 Bidirectional Sensitive Swing Paddle Indicator
Custom red swing paddle can swing forward and backward to identify forward flow, backflow and no-flow status, accurately alerting operators to pipeline dry-up, reverse medium backflow and insufficient flow risks to avoid unplanned production shutdown and equipment damage.
3.5 Double-Layer FKM Fluororubber Sealing System
Dual independent green fluororubber gaskets form double anti-leakage protection, resisting chemical erosion, salt spray aging and extreme temperature alternation, achieving zero leakage under long-term full-load continuous operation in chemical plants and offshore high-salt corrosive environments.
3.6 Compact Inline Straight Layout
Inline tubular structure fits seamlessly into straight horizontal/vertical pipelines without extra lateral space occupation, ideal for skid-mounted equipment, compact industrial cabinets, greenhouse narrow piping and confined offshore machinery layouts.
3.7 Multi-Harsh Environment Verified Reliability
Validated through rigorous salt spray aging, hot-cold alternating cycle and hydraulic burst pressure tests, reliably supporting year-round non-stop operation of industrial, chemical, agricultural and offshore marine engineering projects.
3.8 Detachable Low-Maintenance Construction
All components can be fully disassembled for internal cleaning, no vulnerable consumable parts, only regular simple wiping of glass tube surface is required, drastically cutting long-term operation and maintenance expenditure for large-scale engineering projects.
4. Global Cross-Industry Application Scenarios
Heavy Industrial Manufacturing
Factory circulating cooling water inline pipelines, boiler straight auxiliary piping, central HVAC chilled water main lines, machine tool hydraulic oil straight circuits; prevents pump dry-grinding and equipment cavitation breakdown.
Chemical & Process Engineering
Inline conveyance pipelines for weak acid, weak alkali and light chemical solvents, straight chemical intermediate circulation lines; 360° full visual flow monitoring eliminates pipeline blockage and material cut-off production halts.
Modern Precision Agriculture
Large-scale farm straight trunk water supply pipelines, greenhouse inline nutrient solution circulation tubing, drip & sprinkler irrigation main flow inspection lines; guarantees uniform water distribution and prevents crop drought yield reduction.
Offshore & Marine Engineering
Ship cabin straight cooling circulation piping, offshore platform inline fresh & seawater auxiliary lines, marine aquaculture straight water recirculation systems; stainless steel anti-salt corrosion construction adapts to coastal and open-ocean high-salt humid environments.
Supplementary Application Fields
Industrial pure water inline purification equipment, solar thermal straight circulation pipelines, fire protection main water supply lines, sanitary food-grade straight fluid transfer 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 & solvent transportation
- Brand & Packaging Customization: Laser engraved customer LOGO on stainless steel end caps, 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, dual-sealing leakage testing, salt spray corrosion aging testing, paddle 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.
WhatsApp Business Line: +8618815068623
Official Website: www.alvifeng.com
