A screw-in, cartridge-style, remote sequence, piloted unloading valve with optional fixed
unload/reload pressure ratios of 60%, 70% or 80%, for use in accumulator-type hydraulic systems.
In its steady state, the UP10-40 blocks flow from 2 to 3. On attainment of a pre-determined pressure at 1, the spool shifts to allow flow from 2 to 3. The spring chamber is vented to 4.
If pressure at 1 drops to a level below the ratio-established reload value, the valve will close, blocking flow from 2 to 3.
• Adjustments cannot be backed out of the valve.
• Adjustments prohibit springs from going solid.
• Hardened precision spool and cage for long life.
• Industry-common size.
Operating Pressure: up to 207 bar (3000 psi)
Flow: up to 3.8 lpm (1 gpm); see performance chart
Pressure Setting Range: 69 to 207 bar (1000 to 3000 psi)
Loading and Unloading Ratios: 60% ±5%, 70% ±5%, 80% ±5%
Temperature: -40° to 100°C (-40° to 212°F) with Buna seals;
-26° to 204°C (-15° to 400°F) with Fluorocarbon seals
Filtration: See page 9.010.1
Fluids: Mineral-based or synthetics with lubricating properties at viscosities of
7.4 to 420 cSt (50 to 2000 sus); See Temperature and Oil Viscosity, page 9.060.1
Installation: No restrictions; See page 9.020.1
Cavity: VC10-4; See page 9.110_4w
Cavity Tool: CT10-4xx; See page 8.600.1
Seal Kit: SK10-4x-MMM; See page 8.650.1