EMERSON A6120 Displacement speed sensor

Mounting the various combinations of modular valves in vertical assemblies will require bolt kits of different lengths. These lengths can be determined from the Bolt Length/Kits Selection Chart (below) which indicates the height of the various modules. Mounting bolts provided by the customer should be SAE grade 7 or better.A range of bolt kits is available for mounting the various modules, normally topped with a DG5S-8, DG3S-8 or DG17S-8 directional control valve. As the modules are of varying height, it is necessary to calculate the height of the stack and then add 20,66mm (.81 in.) for thread engagement. The Bolt Length/Kits Selection Chart (below) contains a list of all possible bolt lengths for the modular system to NFPA-D08 (ISO-4401-08) interface.

Fluid Cleanliness

 Proper fluid condition is essential for long and satisfactory life of hydraulic components and systems. Hydraulic fluid must have the correct balance of cleanliness, materials, and additives for protection against wear of components, elevated viscosity, and inclusion of air. Essential information on the correct methods for treating hydraulic fluid is included in Vickers publication 561 “Vickers Guide to Systemic Contamination Control” available from your local Vickers distributor or by contacting Vickers, Incorporated. Recommendations on filtration and the selection of products to control fluid condition are included in 561.

Recommended cleanliness levels 

 using petroleum oil under common conditions, are based on the highest fluid pressure levels in the system and are coded in the chart below. Fluids other than petroleum, severe service cycles, or temperature extremes are cause for adjustment of these cleanliness codes. See Vickers publication 561 for exact details.Vickers products, as any components, will operate with apparent satisfaction in fluids with higher cleanliness codes than those described. Other manufacturers will often recommend levels above those specified. Experience has shown, however, that life of any hydraulic component is shortened in fluids with higher cleanliness codes than those listed below. These codes have been proven to provide a long, trouble-free service life for the products shown, regardless of the manufacturer.

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