This section gives basic specifications for Vickers logic element and pressure compensator threaded cartridge valves. Its purpose is to provide a quick, convenient reference tool when choosing these valves or designing a system using these components.
All cartridges have hardened and ground spools, and/or honed sleeves, poppets and sharp-edged ground steel seats. This provides an excellent product that is dirt-tolerant, has reliable seating, and is suitable for fast cycling with long life.
These Vickers cartridges provide the system designer with a versatile range of elements for use in MCD packages for controlling pressure, flow and direction of flow.
The range includes:
• Pressure compensators
• Pressure compensators with priority and bypass outlets
• Differential-pressure sensing elements
The correct selection of these products can enhance machine performance, shorten the design process and minimize manufacturing costs of manifold blocks.
Differential-pressure sensing elements - DPS2
For controlling pressure, flow or direction (including 3- and 4-way bridge circuits) the DPS2 is used with the aid of external pilot operators. The DPS2 elements are function building blocks which respond to pressure differential signals, providing the capacity to switch or modulate flows up to 303 L/min (80 USgpm) and pressure to 350 bar (5000 psi).
The choice of pilot arrangements related to DPS2 variants can minimize the number of construction holes in a manifold, simplifying design and reducing costs.
All poppet type DPS2 elements have recently been upgraded to 350 bar (5000 psi).
Flow compensators - PCS3
An essential component of a pressure compensated flow control which, with an external fixed or variable orifice, provides the required compensated flow characteristic.
Excess flow is diverted at maximum system pressure. Excess fluid upstream must be diverted e.g. through a relief to tank.
Pressure compensator with priority and bypass outlets -PCS4
Similar in function to the PCS3. The major difference is that excess flow is diverted at priority flow pressure, instead of at maximum system pressure, as is the case with PCS3 compensators.
The excess flow can pass to a secondary circuit or to tank.
Produs de: Eaton
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