Sectional design allows valves to be assembled with a variety of spools to meet your application requirements. To assemble a complete valve at least one work section in addition to one outlet section are required. All work sections feature load check, standard lever handles, a rating of 3625 PSI, and a GPM rating of 21. Bailey can assemble these valves for you. There is an additional fee of $25 per valve to do so. You can request this service in the instructions field when you checkout online at BaileyHydraulics.com.