Hydro-Craft Hydro-Craft has been the leading manufacturer of hydraulic reservoirs and accessories for over 60 years. Excellent service and high quality have been a part of the Hydro-Craft package from the start, meeting the hydraulic needs of many diverse industries and applications. Their product family includes reservoirs, end covers, flanges, motor mounts, plugs, sight levels, pressure gauges, filler breathers, filters, couplings, ball valves, and manifolds. Related LinksWebsite