RV16-26 Relief, Pilot-Operated Spool (RV16-26)
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.
Product Operation
The RV16-26 blocks flow from 1 to 2 until sufficient pressure is present at 1 to force the piloting relief off its seat, allowing the main (second stage) spool to shift, opening 1 to 2.
The cartridge offers smooth transition in response to load changes in demanding hydraulic circuits.
NOTE: The RV16-26 cannot be used in cross-over relief applications.
Product Features
• Adjustments cannot be backed out of the valve.
• Adjustments prohibit springs from going solid.
• Hardened spool and cage for long life.
• Optional spring ranges to 275.8 bar (4000 psi).
• Fast, smooth response to pressure surges.
Product Ratings
Operating Pressure: 275.8 bar (4000 psi)
Flow: See Performance Chart
Internal Leakage: 115 cc/minute (7 cu. in./minute) max. for pressure settings below 138 bar (2000 psi); 197 cc/minute (30 cu. in./minute) for pressure settings of 138 bar (2000 psi) or higher. Leakage measured at 85% of nominal setting.
Crack Pressure Defined: bar (psi) evident at 7.61 lpm (2 gpm) attained
Reseat Pressure: Nominal 90% of crack pressure
Standard Spring Ranges:
03: 9.66–20.70 bar (140–300 psi);
06: 15.87–41.41 bar (230–600 psi);
15: 36.63–103.52 bar (530–1500 psi);
35: 82.82–241.55 bar (1200– 3500 psi)
Temperature: -40 to 70°C (-40 to 160°F)
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: VC16-2; See page 9.116.1
Cavity Tool: CT16-2XX; See page 8.600.1
Seal Kit: SK16-2X-B; See page 8.650.1
