“Check valve 4 PSI 20 GPM T-13A” has been added to your cart. Continue shopping Remove item Thumbnail image Product Price Quantity Subtotal × Check valve 4 PSI 20 GPM T-13ASKU: AST09292 $39.08 Check valve 4 PSI 20 GPM T-13ASKU: AST09292 quantity $39.08 Coupon: Apply coupon Update cart Cart totals Subtotal $39.08 Shipment UPS Priority Shipping to TX. Total $39.08 Proceed to checkout