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300-600 RPM's is recommended
helping reduce cracking and improve joint accuracy in freshly placed concrete
Fast beading action
The dual vacuum system provides redundant vacuum capacity
Pipe Line Blower - 4" Rock Tred 300-600 RPM's is recommended4 Pipe Line Blower that connects directly to a 4 API flange plate. It is designed to blow air into the pipeline, and is capable of ventilating very long pipeline sections. Specifications Length 11. 25 Weight 11. 35 lbs. Diameter of Base 7. 25 Inlet 1 2 NPT Bolt Circle Diameter 6. 56 Base Slot Diameter . 40 Boxed Weight 13 lbs.