Monoblock Directional Control, 0-10 gpm (0-38 lpm)

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Monoblock Directional Control, 0-10 gpm (0-38 lpm)

Product catalog summary

Features:

O'Ring Ports: Designed to eliminate leakage.
Power Beyond Capability: Suitable for multi-valve circuits.
Precision Ground IOSSO Plated Spools: Ensures long life.
Individual Drop Load Checks: Prevents load dropping when the spool is shifted.
Fourth Position Float: Allows spool movement to a fourth position, making all ports common.

Specifications:

Flow Ratings: MB21 & MB22 - 10 gpm (38 lpm), MB23 - 8 gpm (30 lpm).
Pressure Rating: Up to 4000 psi (275 bar).
Port Sizes: Inlet/Outlet and Work Ports #8SAE (3/4-16).
Filtration: 25 Micron recommended.
Weight: MB21 - 8.1 lbs (3.7 kg), MB22 - 10.9 lbs (4.9 kg), MB23 - 14.2 lbs (6.4 kg).

Materials:

Body: Cast Iron.
O'Rings: Buna N.
Spools: IOSSO Plated Steel.
Knob: Black Nylon Ball.

General Information:

The MB monoblock directional control valve is designed for applications requiring up to three separate functions. It is available in one (MB21), two (MB22), or three (MB23) spool configurations and can be converted to closed center or power beyond with the appropriate cartridge.

Spool Types and Actions:

Tandem Center 4-way (T): Powers a cylinder or motor in both directions.
Open Center 4-way (O): Connects all ports to tank in neutral.
Tandem Center 3-way (T3): Powers a cylinder in one direction.
Spool Actions: Include three-position detent, friction detent, spring-to-center, and spring detent.

Actuators:

Standard joystick handle and optional joystick handles for different actuation patterns.
Enclosed lever handle convertible from vertical to horizontal position.

Options:

Power Beyond (W): High pressure carryover for downstream valves.
Closed Center (C): Blocks neutral flow path for pressure compensating systems.
Adjustable Relief (B): Factory preset at 2000 psi, adjustable from 1200 to 3100 psi.

Model Code Examples:

MB21TKLBW: One spool valve with tandem center spool, fourth position float, enclosed handle, adjustable relief, and power beyond.
MB22TSTSLBC: Two spool valve with tandem center, spring centering, enclosed handle, adjustable relief, and closed center.
MB23OF1TSDTKLA: Three spool valve with open center spool, friction detent, tandem center spool, spring detent, fourth position float, enclosed handle, and joystick assembly.

Flow and Pressure Information:

Graphs provided show pressure drop vs. flow and pressure vs. flow for various configurations, indicating performance characteristics under different conditions.

Catalog excerpts

Monoblock Directional Control, 0-10 gpm (0-38 lpm)-1

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

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Monoblock Directional Control, 0-10 gpm (0-38 lpm)-2

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,...

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Monoblock Directional Control, 0-10 gpm (0-38 lpm)-3

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...

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Monoblock Directional Control, 0-10 gpm (0-38 lpm)-5

MB - JOYSTICK MOVEMENT SCHEMES:

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Monoblock Directional Control, 0-10 gpm (0-38 lpm)-6

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

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