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Modular cartridge valves type SHLI, SHLIR

Modular cartridge valves type SHLI, SHLIR
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Modular cartridge valves type SHLI, SHLIR - 1

High flow cartridge valves type SHLI, SHLIR Directional control, optional poppet seal, ISO 7368 sizes 16÷50 SHLI* are 2 way cartridge valves, with high flow performances and low pressure drops. The high flow capability of SHLI* permits to reduce the cartridge size in comparison with standard SC LI, see section ‫ݚ‬ and consequently a reduction of the overall block dimensions. The recess dimensions conform to ISO 7368 standard. They can be used with all standard Atos covers to realize directional controls, see tab. H030 and H040. Two different execution are available: - SHLI, high flow cartridges without poppet seal. - SHLIR, as SHLI, but with special LAP dynamic poppet seal to avoid internal leakages from B to X piloting line, for applications requiring improved leakfree feature. Dynamic poppet seal Technical characteristics - ISO 7368 sizes from 16 to 50; - type of poppet: 33 and 43 (with damping nose); - area ratio (Aa/Ax), see section ‫;ݘ‬ - max flow up to 4000 l/min, see section ‫;ݘ‬ - max pressure: 350 bar; - spring cracking pressure: 1, 3 and 6 bar (only 3 and 6 bar for SHLIR). MODEL CODE /* Seals material: omit for NBR (mineral oil & water glycol) PE = FPM High flow cartridges according to ISO 7368 Applications Manifold blocks with high flow performances and reduced dimensions SHLIR: circuits with accumulators, safety valve for vertical loads. Serial number Spring cracking pressure: 1 = 1 bar (not for SH LIR) 3 = 3 bar 6 = 6 bar Optional poppet seal (omit if not required) Type of poppet, see section ‫ݘ‬ 33 = without damping nose 43 = with damping nose Cartridge areas AA = seat area (side A) AB = anular area (side B) Ax = piloting area HYDRAULIC CHARACTERISTICS (based on mineral oil ISO VG 46 at 50 °C) Size Poppet type Max flow at Δp = 5 bar Maximum flow Max pressure (ports A, B, X) AA AB (% of AA) AX (% of AA) Pilot volume

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Modular cartridge valves type SHLI, SHLIR - 2

MAIN CHARACTERISTICS OF HIGH FLOW CARTRIDGES VALVES TYPE SHLI AND SHLIR Assembly position / location Surface finishing Roughness index Ra 0,4 - flatness ratio 0,01/100 (ISO 1101) Ambient temperature Recommended viscosity Fluid contamination class ISO 4406 class 21/19/16 NAS 1638 class 10, in line filters of 25 μm (β25 >75 recommended) _ Fluid temperature -20°C +60°C (standard seals and water glycol) Flow direction Q/Δp DIAGRAMS (based on mineral oil ISO VG 46 at 50 °C) High flow SHLI(R) compared with standard SC LI size 16 Valve pressure drop Δp [bar] Valve pressure drop Δp [bar] Flow rate...

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