Photo 1 of ZKH 2PCS 3/4" NPT Horizontal Check Valve, Stainless Steel Non Return Swing Check Valve for Oil Water Gas Air?3/4", DN20?

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Photo 1 of ZKH 2PCS 3/4" NPT Horizontal Check Valve, Stainless Steel Non Return Swing Check Valve for Oil Water Gas Air?3/4", DN20?Photo 2 of ZKH 2PCS 3/4" NPT Horizontal Check Valve, Stainless Steel Non Return Swing Check Valve for Oil Water Gas Air?3/4", DN20?