Manufacturer: Wenzhou Weifeng Technology Co.,Ltd.
WhatsApp: +8618815068623 | Website: www.alvifeng.com
WF-YL11-20 female thread impeller flow indicator is a top-view straight-through visual pipeline monitor developed by Weifeng Tech. Made of cast stainless steel with female thread ends, top borosilicate sight glass and built-in star impeller, it visually checks medium flow inside pipelines, widely used in HVAC, circulating water, chemical oil, food & pharmaceutical industries to avoid pump dry-running and flow loss.
1. Stainless steel cast body (304/316 optional), passivation surface, anti-corrosion for water, oil & mild corrosive liquid, hygienic for food-grade application.
2. Standard NPT/BSP female thread connection for DN15~DN50, easy screw installation without welding.
3. Top high-pressure borosilicate glass with double fluorine rubber O-ring sealing, leak-proof and wide viewing range.
4. Blue star-shaped impeller with high sensitivity, spins under tiny flow to indicate flow rate & cut-off.
Full bore design without extra pressure drop; compact size for limited installation space; reliable sealing for medium-high pressure; sensitive low-flow response; maintenance-free for long continuous operation.
HVAC cooling water system, water treatment plant, chemical fluid pipeline, food & pharmaceutical sanitary pipeline, hydraulic equipment oil circuit.
Custom on material, thread standard, dimension available; all products pass pressure & leakage test before shipment. Contact us via WhatsApp for order & sample.


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