HARCO 820125 2" Ductile Iron IPS Valve to Pipe Joint Restraint . With the HARCO Valve to Pipe Restraint System, you can eliminate concrete thrust blocks. This dramatically speeds installation and allows for later access to the valve. Consult HARCO for a simple restrained pipe length calculation utility for use with this product. Fits push-on valves for IPS PVC pipe made by American Flow Control/Waterous, AVK, Clow, Kennedy, Matco-Norca, M&H and Nibco. Can eliminate need for concrete thrust blocks. Price is for (1) set inculding (2) clamps and bolt sets, and restraint rods with nuts as required.