SYMBOL:
 |
DESCRIPTION
The CRV10-20 cross-port relief uses two RV10-20 cartridges in an in-line plumbed housing.
It is typically used to protect a hydraulic cylinder or motor from load-induced pressure surges.
The cartridges used are screw-in, direct-acting, poppet-type valves, intended for use in lower flow circuits, requiring low internal leakage.
OPERATION
The CRV10-20 manifold allows flow to pass through the separated 1 to 2 passages at low pressure loss. If pressure in either passage exceeds the valve setting, flow will cross over to the opposite passage.
Note: Back-pressure at the outlet port of the relief cartridges will increase the nominal
setting of the valve on a 1:1 basis. For example, 6.9 bar/100 psi back-pressure increases the
nominal setting by 6.9 bar/100 psi.
See valve model RV10-20, page 6.020.1 for cartridge specifications.
FEATURES
• Adjustments cannot be backed out of the valve.
• Adjustments prevent springs from going solid.
• Hardened poppet and cage for long life.
• Optional spring ranges to 228 bar (3300 psi).
• Rapid response to pressure surges.
• Industry-commom cavity size.
RATINGS
Operating Pressure: 240 bar (3500 psi) maximum
Flow: 38 lpm (10 gpm) maximum; see performance chart for flow handling capacity at max.
setting for each spring range option. Pressure rise will vary with spring (range) and with
setting within range due to flow forces. Consult factory for specific flow characteristic values.
Internal Leakage: 0.25 cc per minute (5 drops/minute) max. to 80% of nominal setting
Crack Pressure Defined: bar (psi) evident at 0.95 lpm (0.25 gpm) attained
Reseat Pressure: Nominal 85% of crack pressure
Standard Spring Ranges:
| Spring Model Code |
Spring Ranges |
| 6 |
6.9 to 41.4 bar (100 to 600 psi) |
| 12 |
10.3 to 82.8 bar (150 to 1200 psi) |
| 23 |
34.5 to 158.7 bar (500 to 2300 psi) |
| 33 |
34.5 to 227.6 bar (500 to 3300 psi) |
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
Seal Kit: SK08-2x-M for cross-over relief application, 2 required; See page 8.650.1
Body Part Number: 7070170 |
