Special road general public flue check valve kitchen range hood check valve flue Valve Anti-smoke treasure anti-odor device

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Brand:
te lu
Model:
Double check valve
Material:
Plastic
Color classification:
Eighth generation large diameter check valve (unlimited installation aperture) eighth generation upgraded check valve seventh generation thickened double door check valve with level meter sixth generation transparent double door check valve (sent for installation
The valve structure:
Feed-through terminal blocks
Connection:
Adhesive
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