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| Description | A screw-in cartridge, 3-port, externally piloted counterbalance valve for precise control of overrunning loads, with load holding capabilities, thermal relief protection and free reverse flow check features. | |||||||||
| Type | Cartridge Valve | |||||||||
| Style | Counterbalance | |||||||||
| Model Code Description | RS08-01-AS6-N-3-300V | RS08-01-AS6-N-3-500K250 | RS08-01-AS6-N-3-500V | RS08-01-AS6-N-3-500V100 | RS08-01-AS6-N-3-500V200 | |||||
| Size | 08 | |||||||||
| Operating Pressure | 350 bar5000 psi | |||||||||
| Nominal Flow | 10 gpm38 L/min | |||||||||
| Pilot Ratio | 3:1 | |||||||||
| Check Valve Cracking Pressure | 1.0 bar14 psi | |||||||||
| Fluid Operating Temperature Range | -20 to 120 ºC-4 to 248 ºF | |||||||||
| Viscosity | 7.4 to 420 cSt50 to 2000 SUS | |||||||||
| Filtration | 21/19/16 or cleaner (per ISO 4406). Use with filter rated ß10 ≥ 200. | |||||||||
| Installation | No Orientation Restrictions | |||||||||
| Cavity | FC08-3 | |||||||||
| Cavity Rougher Tool | 02580086 | |||||||||
| Cavity Finisher Tool | 02580087 | |||||||||
| Cartridge Weight | 0.266 kg0.58 lb | |||||||||
| Cartridge Material | Steel with hardened work surfaces. Zinc-plated exposed surfaces. Anodized aluminum knobs. Buna N or Viton® o-rings, and PTFE back-up rings. | |||||||||
| Seal Kits (Buna-N) | FS083-N P/N: 03054795 | |||||||||
| Seal Kits (Viton®) | FS083-V P/N: 02591059 | |||||||||
| Seal Material | Buna-N | |||||||||
| Body Material | Aluminum | |||||||||
| Optional Setting | Set at Minimum Pressure for the Range | 250 ÷ 10 | Set at Minimum Pressure for the Range | 100 ÷ 10 | 200 ÷ 10 | |||||
| Maximum Internal Leakage at 80% of Nominal Settings | 5 drops/min0.25 cm³/min | |||||||||
| Valve Model | RS08-01 | |||||||||
| Adjustment Options | Allen Head (HEX 5/32 in.) | Allen Head (HEX 5/32 in.) without Cover Cap | Allen Head (HEX 5/32 in.) | Allen Head (HEX 5/32 in.) | Allen Head (HEX 5/32 in.) | |||||
| Back-Up Ring Material | Polytetrafluoroethylene (PTFE) | |||||||||
| Number of Ports/Ways | 6 | |||||||||
| Ports | SAE | |||||||||
| Medium | Mineral-Based Oils or Synthetics with Lubricating Properties | |||||||||
| Operating Temperature [Max] | 120 ºC248 ºF | |||||||||
| Cracking Pressure | 1 bar14.5 psi | |||||||||
| Hex Size | 1 in | |||||||||
| Torque | 18.5 to 22 N·m25 to 30 ft·lb | |||||||||
| BUn | EA | |||||||||
| Standard Line Bodies |
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| Operation | The RS08 allows free flow from port 2 (inlet) to port 1 (load). Flow from port 1 to port 2 is blocked until either the pressure setting has been reached or sufficient pilot pressure has been applied to port 3 (pilot). The RS08 has optional 3:1 and 4:1 pilot ratios. It will open when pilot pressure = 1/3 (or 1/4) of the difference between the set pressure and the load pressure. | |||||||||
| Features |
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| Note |
Subject to technical modifications Rotating adjustment screw clockwise increases the pressure setting |
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| Core Products | ||||||||||
| Division | HYDRAULIC DIVISION | |||||||||
| Product Group Family | CARTRIDGE VALVES-CHECK VALVES AND LOAD | |||||||||
| Product | CARTRIDGE VALVES | |||||||||
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