Page 683 - Catalogo-oleodinamica-Hydrover

COMPONENTI

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RE 18321-87/04.13
Replaces: RE 18321-87/09.09

Logic element, pressure

compensator with static load sense

Common cavity, Size 12

VRLA-12A-S 04.84.09.00 - 57 - Z

Description
The valve delivers priority flow, from 0 to max. available, on demand
to port 4, while compensating for load changes downstream. In
neutral, all input flow at 3 is given to the priority port 4. Pressure
at 4 is applied to the spool against a spring force so that increasing
pressure causes increasing by-pass of input flow to port 2. Load sense
pressure at port 1, obtained between the downstream control and the
load, assists the spring, and moves the spool back toward supplying
priority flow. Comparison between priority outlet and LS pressure
seeks a constant differential pressure over the control valve. As load
and flow control change, the priority flow is increased or decreased
to satisfy the demand establishing that differential.

Performance Technical data
Max. operating pressure bar (psi) 350 (5000)
Max. intel flow l/min. (gpm) 100 (26)
Max. priority flow l/min. (gpm) 80 (21)
Fluid temperature range °C (°F) -30 to 100 (-22 to 212)
Installation torque Nm (ft-lbs) 81-95 (60-70)
Weight kg (lbs) 0.32 (0.71)
CA-12A-4N
Cavity
see data sheet RE 18325-70
code RG12A4010530100
Seal kit (*)
material no. R930001660
Mineral-based or synthetics
Fluids with lubricating properties at
viscosities of 10 to 500 mm /s (cSt)
2
Filtration Nominal value max. 10µm (NAS 8)
ISO 4406 19/17/14
Installation No restrictions
Other Technical Data See data sheet RE 18350-50
(*) Only external seals for 10 valves

Edizione luglio 2025 Catalogo generale 683