2-4" Relief Valve Assembly with Sensing Line SKU: RK-BFD-1200 $1,460.00 Login for better price Select Quantity -+ Add to Cart Additional DetailsManufacturer: Deringer Size: 2 Inch, 2 1/2 Inch, 3 Inch, 4 Inch Product model: 40 / 40G, 50 / 50G