CR10-28 Relief, Bi-Directional (CR10-28)
A screw-in, cartridge-style, direct-acting, differential area, poppet-type, bi-directional relief valve.
Product Operation
The CR10-28 is a direct-acting, dual cross-over relief valve in a single cartridge
format. When pressure at either port exceeds the nominal setting value, flow will be
transmitted to the opposite port. Back pressure at either port will affect the nominal
setting of the opposite port on a 1:1 basis.
For correlation purposes, pre-set value will be measured at port ➁. Pressure at port ➀ will not exceed ±150 psi from the port ➁ value.
Product Features
• Adjustments cannot be backed out of the valve.• Adjustments prohibit springs from going solid.• Hardened parts for long life.• Industry common cavity.
Product Ratings
Maximum Operating Pressure: 240 bar (3500 psi)
Adjustable Pressure Range: 14 to 210 bar (200 to 3000 psi); Two springs; Pressure is set at port ➁
Proof Pressure: 345 bar (5000 psi)
Reseat Pressure: 90% of crack (crack pressure at 0.95 lpm/0.25 gpm)
Maximum Difference for Crack Pressure in Both Directions: 10.5 bar (150 psi)
Flow Range: 60 lpm (16 gpm); see performance chart
Maximum Internal Leakage: when reseat to 80% of crack pressure: 33 ml/minute (2 cu. in./minute
Cycle Limitations: Internal seal life is limited to 300,000 cycles in either direction at maximum setting
Temperature: -40 to 120°C with Buna N 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: VC10-2; See page 9.110.1
Cavity Tool: CT10-2XX; See page 8.600.1
Seal Kit: SK10-2X-B; See page 8.650.1
