PipeLine Non Return backflow prevention Check Valve for air ventilation fittings One-way value for round duct 200mm
![PipeLine Non Return backflow prevention Check Valve for air ventilation fittings One-way value for round duct 200mm](http://ae01.alicdn.com/kf/HTB1Zl6ebcfrK1RkSnb4q6xHRFXaa/PipeLine-Non-Return-backflow-prevention-Check-Valve-for-air-ventilation-fittings-One-way-value-for-round.jpg_350x350.jpg)
sku: 32973736683
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$6.69
Shipping from: China
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