Control valves

M6 series control blocks from the Mobile Hydraulics Division of Bosch Rexroth incorporate LUDV (load-independent distribution of flow), or flow sharing, for improved productivity during the simultaneous operation of actuators. The M6-15 is a two- or three-function block that is used in conjunction with a variable-displacement pump and has an optional priority valve to supply hydraulic steering systems in wheel loaders, excavator loaders, crawler dozers, and telescopic handlers. It features two pilot-operated check valves in ports for low-leak operations. A float-position function is also available that prevents spool cavitation, and an integrated LS pressure relief function complements the wheel-loader-specific features. Its maximum operating pressure is 35 MPa (5100 psi) and it can be extended to seven or eight control functions by adding directional valve elements. An M6-22 is available for larger wheel loaders and dozers.

Steering control unit

A ductile iron housing and thicker sleeve allows Eaton's new Series 10 steering control unit to operate at pressures up to 27,500 kPa (4000 psi), contributing to downsized cylinders in a dual-cylinder steering system. The Series 10 features an improved symmetrical flow-path design that negates flow imbalances when the unit is steered in one direction as opposed to the other. It can be specified with Aeroquip Snap-to-Connect connectors machined directly into its housing. A latch ring provides positive engagement of the mating connectors, and an elastomeric seal prevents leakage. It is available in three neutral-circuit options: open center, for a fixed-displacement pump; closed center, for a pressure-compensated, variable-displacement pump; and load sensing, to reduce heat and provide optimum flow to other work functions.

Proportional divider valve

The SFP 25254 proportional divider valve from Source Fluid Power is suitable for any valve-type application requiring an adjustable divider, such as when diverting flow to a hydraulic motor that drives a liquid pump. The valve allows operators to change the split ratio anywhere from 50/50 to 80/20 externally without changing internal components. The ratio can be adjusted on the fly manually, or remotely via Source's Motorized Flow Control, which is stable at flow rates over 189 L/min (50 gal/min) with a power consumption of 1.5 W or less while retaining settings if power is interrupted.

Hose & tubing capabilities

Saint-Gobain Performance Plastics has released a Synflex Capabilities Brochure, which highlights the features of its thermoplastic Synflex hose and tubing as well as other services provided by the company. Some of the Synflex range covered includes hydraulic hose, truck products, specialty hose, and industrial tubing. The company introduced Synflex over 40 years ago to replace rubber or metal designs in a variety of applications.

Proportional solenoid valve

The principal operation of Thomas Magnete USA's proportional pressure-reducing valve is based on barometric-pressure feedback. Pressure is applied to the face of the valve spool, thus opposing the magnetic force. When current is supplied to the solenoid, the magnetic armature moves the valve spool and clears the oil feed aperture. When no current is supplied, a spring presses the valve spool into its initial position, thus closing the oil feed aperture and opening the aperture to the tank outlet. The magnetic force/stroke characteristics match the valve function so that the working pressure resulting from a given solenoid current shows little variation over the range of volume flow.