Shuangda Hydraulic Machinery is one of the professional manual operated directional vavel manufacturers and suppliers in China,Website:://.chinahydraulic-valve.com, welcome to buy cheap and low price maunual directional valve, rexroth manual directional valve made in China from our factory. Usage and characteristic Manual operated directional valve type WMM is a direct operated directional spool valve. It makes the spool in axial movement by rotating the handle so that to change the oil way. There are several directional spools, like 2-position 3-way, 2 position 4-way and 3-position 4-way could be chosen. Locator and spring reposition device are optional. This valve is sub-plate installed.