Parker Relieving Dial Regulators | 52R Series
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FEATURES
SYMBOLS
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Part Numbers
| Part Number* | Description |
Port Size |
Flow |
Height (A) mm (in) |
Width (H) mm (in) |
| 52R126R |
Standard pressure - 5 to 160 psig (0.34 to 11 bar) |
1/4" | 117 | 104 (4.10) | 56 (2.20) |
| 52R125R |
Low pressure - 2 to 40 psig (0.14 to 3 bar) |
1/4" | 117 | 104 (4.10) | 56 (2.20) |
| 52R226R |
Standard pressure - 5 to 160 psig (0.34 to 11 bar) |
3/8" | 180 | 104 (4.10) | 56 (2.20) |
| 52R225R | Low pressure - 2 to 40 psig (0.14 to 3 bar) | 3/8" | 180 | 104 (4.10) | 56 (2.20) |
| 52R326R | Standard pressure - 5 to 160 psig (0.34 to 11 bar) | 1/2" | 195 | 104 (4.10) | 56 (2.20) |
| 52R325R | Low pressure - 2 to 40 psig (0.14 to 3 bar) | 1/2" | 195 | 104 (4.10) | 56 (2.20) |
| 52R426R | Standard pressure - 5 to 160 psig (0.34 to 11 bar) | 3/4" | 220 | 104 (4.10) | 56 (2.20) |
| 52R425R | Low pressure - 2 to 40 psig (0.14 to 3 bar) | 3/4" | 220 | 104 (4.10) | 56 (2.20) |
*For BSPP ports, add a "1" to the end of the part number.
Service Kits and Accessories
| Part Number | Description |
| RRP-16-024-80 | Adjustment dial knob |
| RRP-95-906-80 | Spring, regulation, Bellville washer - 2 to 40 psig |
| RRP-95-905-80 | Spring, regulation, Bellville washer - 5 to 160 psig |
| RRP-95-766-80 | Piston and bonnet repair kit |
| RRP-96-934-80 | Valve, pilot with o-ring and valve spring |
Technical Specifications
| Flow Capacity: | 117 scfm (1/4"), 180 scfm (3/8"), 195 scfm (1/2"), 220 scfm (3/4") |
| Max Operating Temperature: | 150°F |
| Max. Supply Pressure: | 20.7 bar (300 psig) |
| Port Size: | 1/4", 3/8", 1/2", 3/4" (NPT, BSPP) |
| Weight: | 2.3 lbs (1.04 kg) |
WARNING: These products can expose you to chemicals including lead and/or DEHP and/or carbon black, which are known to the State of California to cause cancer or birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov
