WH Directional Spool Valve

The directional spool valve operates like a normal directional valve that is used to open and closed hydraulic flow and switch flow direction. The Directional spool valve WH series we produced is mostly used where a large flow rate of more than 100L/min is required. Directional spool valve WH series we produced is most used in the plastic modeling machines which requires the  large flow rate. The WH series of 10 size valves is often used in high flow hydraulic unit sand hydraulic systems, it usually equipped with 4WE6E, 4WE6H, 4WE6J as a pilot operated control.Example (Normal code):　"FT – 4WH 10 E – 20 " Explanation As Below:FT–4WH10 E–20/   (1)(2)(3)(4)(5)(6)(7)(8)(1) Producer code= FT(2) Size= 10(3) No code= Spool return by springs　　H= Spool return by hydraulic(4) Spool symbol= E,G,F, please see the spool symbol form(5) Series no.= 20 for Size 10　50= 50 for Size 16, 25, 32(6) No code= Without switching adjustmentS= With meter-in control adjustmentS2= With meter-out control adjustment(7) No code = NBR sealsV = FKM seals(8) No code = Black GalvanizationB= Blue Powder INTERNAL  & EXTERNAL SUPPLY CONVERSIONExternal supply: The M6 screw plug in the P port on top the  main valveInternal supply:  To remove the M6 screw plug from the valve– Refer to Drawing AINTERNAL & EXTERNAL DRAIN CONVERSIONExternal drain:  Remove the nut and screw in the M6 plug Internal: Screw out the M6 plug– Refer to Drawing B