Jandy 7235 180 Degree Straight-Through Check Valve, 1.5" - 2" - Black-2PK 180 Straight-Through Degree Check Valve. Minimal Hydraulic Loss. Clear Lid for Easy Inspection. Easy to Disassemble when Clearing Debris. Corrosion Resistant Stainless Steel Swing with Spring Design. Highly Resistant to Chlorine. Also Available in 90 Degree Model. Case Quantity Available (12/Case)