MONOBLOCK DIRECTIONAL CONTROL VALVE • O'RING PORTS to eliminate leakage. • POWER BEYOND CAPABILITY to fit your multi valve circuits. • PRECISION GROUND IOSSO PLATED SPOOLS that assure long life. • INDIVIDUAL DROP LOAD CHECKS prevent the load from dropping when the spool is shifted. • FOURTH POSITION FLOAT allows spool movement to a fourth position and makes all ports common to each other • FLOW RATINGS: • 25 Micron Filtration Recommended. • Cast Iron Body • IOSSO Plated Steel Spools • Black Nylon Ball Knob

MB – GENERAL INFORMATION The Brand MB, monoblock directional control valve, is a superbly designed monoblock spool valve suitable for applications requiring one valve to perform up to three separate functions. The MB valve is available in one (MB21), two (MB22) or three (MB23) spool configurations. The valve is also field convertible to closed center or power beyond with the appropriate cartridge. SPOOLS – Tandem center 4-way (T, in model code) powers a cylinder or a motor in both directions. Open center 4-way (O, in model code) connects all ports to tank in neutral. Tandem center 3-way (T3,...

MB – CREATING A MODEL CODE FOR MB’S: M B 2 __ __ __ __ __ __ __ __ __ __ VALVE TYPE: 1 – One spool 2 – Two spools 3 – Three spools SPOOL TYPE (first section): T – Tandem center 4-way O – Open center 4-way T3 – Tandem center 3-way SPOOL ACTION: D – Three position detent F1 – Friction detent S – Spring center SD – Spring center detent (Detents P→A) K – Fourth position float (T spool only) OPTIONS: W – Power beyond sleeve installed C – Closed center plug installed B – Adjustable relief (2,000psi [137 bar] standard setting) Omit – No relief, power beyond or Closed center HANDLE OPTION: L – Enclosed...

MB - JOYSTICK MOVEMENT SCHEMES:

MB – FLOW AND PRESSURE INFO: Neutral Flow Pressure Drop Pressure Drop vs. Flow for P to A or B Pressure vs. Flow for MB Relief 0 Pressure Drop vs. Flow for A or B-T 7.6

DIMENSIONAL DATA: inches & [millimeters]