PRP-10W-2C-Y-Z-A1 Winner Hydraulics: 95 L/min Inverse Proportional Relief Valve, 10W-2 Cavity
The Winner Hydraulics PRP-10W-2C-Y-Z-A1 is a pilot-operated, spool-type, inverse balanced proportional relief valve for the 10W-2 cavity, with a 7/8″-14UNF-2A thread. It holds its high pressure setting when no command is applied, and reduces the relief pressure in inverse proportion as coil current rises. It is rated for 95 L/min (120 L/min maximum) at up to 350 bar. That makes it a fail-to-high-pressure proportional relief solution in a single cartridge, for circuits that must keep full pressure available if the electrical signal is lost.
Operating Principle
Flow from port 1 (P) to port 2 (T) is blocked until pressure at port 1 overcomes the spring force. Applying current to the coil reduces the effective spring force, lowering the valve setting. Higher current gives lower relief pressure, and with zero current the valve returns to its maximum setting within the selected range.
PRP-10W-2C-Y-Z-A1 Technical Specifications
| Specification | Value |
|---|---|
| Valve type | Pilot-operated, spool-type, inverse balanced proportional relief valve |
| Function | High pressure setting with no command |
| Cavity | 10W-2 |
| Thread | 7/8″-14UNF-2A |
| Rated flow | 95 L/min (25.1 gpm) |
| Maximum flow | 120 L/min |
| Max. operating pressure | 350 bar (5000 psi) |
| Valve hex size | 22.22 mm (7/8 in) |
| Installation torque | 35–45 Nm (26–33 lbf-ft) |
| Max. leakage | Approx. 30 cc/min at 70 bar (1000 psi) |
| Reseat | Exceeds 85% of cracking pressure |
| Hysteresis | < 8% with DC input; < 4% with dither |
| Linearity with dither | < 2% |
| Recommended dither | 100–250 Hz (best 140–200 Hz) |
| Coil | EC-16B, 26 W, 16 mm tube (ordered separately) |
| Weight | 0.242 kg (without coil) |
High Pressure Adjustment Ranges (Y)
| Y code | Adjustment range |
|---|---|
| W | 350–210 bar |
| A | 210–105 bar |
| B | 105–55 bar |
| D | 55–20 bar |
The customer must specify a relief setting within the selected range when ordering.
Option (Z)
- L: standard type with leakproof hex socket adjustment screw
Key Features
- Inverse proportional control: high pressure at zero current
- Complete 95 L/min relief valve, with no separate main stage needed
- Maximum flow of 120 L/min
- Four high-pressure adjustment ranges, from 20 bar to 350 bar
- Leakproof hex socket adjustment screw as standard
- Pilot-operated spool design with a 26 W EC-16B coil
- Continuous-duty rated coil with efficient wet-armature construction
- < 4% hysteresis and < 2% linearity with dither
- Heat-treated, high-precision ground working parts
- WINNERcoat® zinc-nickel plating, salt-spray tested to DIN EN ISO 9227 for up to 1000 hours
- Pressure rating tested to NFPA T2.6.1, with 90/90 fatigue rating assurance
- 100% functionally tested before shipment
- Multiple seal kit materials available
Winner recommends a current-sensing amplifier with dither for best performance.
Standard vs. Inverse: 10W-2 PRP Proportional Relief Valves
| Model | At zero current | Pressure as current rises | Control ranges | Z options |
|---|---|---|---|---|
| PRP-10W-2C-Y-Z-A1 | High pressure | Decreases | W, A, B, D | L |
| PRP-10W-2C-Y-Z-B1 | Low pressure | Increases | W, A, B, D | N, P |
| PRP-10W-2C-Y-Z-B | Low pressure | Increases | A, D, E (up to 210 bar) | P |
For the smaller 30 L/min inverse version, see the PRP-08W-2C-Y-Z-A1.
Buy the PRP-10W-2C-Y-Z-A1 Winner Hydraulics
Atlantech Drives supplies genuine Winner Hydraulics proportional relief valves worldwide, with fast shipping. Tell us the adjustment range (W, A, B or D), the required relief setting and the coil voltage, and our commercial team will quote the PRP-10W-2C-Y-Z-A1 and its EC-16B coil with availability and lead time. Get your quote today.
