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A wide variety of hose barb plastic check valve options are available to you, such as material, structure, and media. ... Zhen Xiang 1/2 mini ball absorb oil spill kits check valve brass hose barb with low price. US $1.80-$2.00 / Piece. 1 Piece ... China hose barb check small plastic air valves. US $0.35-$1.50 / Piece. 100 Pieces ...
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