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A screw-in, cartridge-style, pilot-operated (two-stage), spool-type hydraulic relief valve, intended for use as a pressure limiting device in demanding hydraulic circuits which require fast response and low hysteresis.
The RV50-26 blocks fl ow from ➀ to ➁ until suffi cient pressure is present at ➀ to force the piloting relief off its seat, allowing the main (second stage) spool to shift, opening ➀ to ➁The cartridge offers smooth transition in response to load changes in demanding hydraulic circuits.NOTE: The RV50-26 may not be used in cross-over relief applications (back
pressure on ➁).
• Adjustments cannot be backed out of the valve.• Adjustments prohibit springs from going solid.• Hardened spool and cage for long life.• Fast, smooth response to pressure surges.• Industry common cavity.
Operating Pressure: 345 bar (5000 psi)
Flow: The Performance Chart illustrates fl ow handling capacity at maximum setting. Pressure rise will vary with setting due to fl ow forces. Consult factory for specifi c fl ow characteristic values.
Internal Leakage: 115 cc/minute (7 cu. in./minute) max. to 85% of nominal setting
Crack Pressure Defi ned: bar (psi) evident at 7.6 lpm (2.0 gpm) attained
Reseat Pressure: Nominal 90% of crack pressure
Standard Spring Ranges: 27.6 to 345 bar (400 to 5000 psi)
Temperature: -40 to 120°C
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: VC10-2; See page 9.110.1
Cavity Tool: CT10-2XX; See page 8.600.1
Seal Kit: SK50-2X-B; See page 8.650.1
