Home / Pipes and Fittings / BUTELINE / BUTELINE PB-1 Reducing Straight Inline Coupling BUTELINE PB-1 Reducing Straight Inline Coupling Size Choose an option22X18mm SR12322X18mm SR123Clear Related products BUTELINE PE Lugged Elbow BUTELINE PB-1 Female Swivel Elbow BUTELINE PE Female Swivel Elbow BUTELINE PE Equal Elbow BUTELINE PE Male Tee BUTELINE PE Male Elbow