Parker Relieving Dial Regulators | 53R 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) |
| 53R426R |
Standard pressure - 5 to 160 psig (0.34 to 11 bar) |
3/4" | 400 | 132 (5.20) | 56 (2.20) |
| 53R425R |
Low pressure - 2 to 40 psig (0.14 to 3 bar) |
3/4" | 400 | 132 (5.20) | 56 (2.20) |
| 53R526R |
Standard pressure - 5 to 160 psig (0.34 to 11 bar) |
1" | 650 | 132 (5.20) | 56 (2.20) |
| 53R525R | Low pressure - 2 to 40 psig (0.14 to 3 bar) | 1" | 650 | 132 (5.20) | 56 (2.20) |
| 53R626R | Standard pressure - 5 to 160 psig (0.34 to 11 bar) | 1-1/4" | 700 | 132 (5.20) | 56 (2.20) |
| 53R625R | Low pressure - 2 to 40 psig (0.14 to 3 bar) | 1-1/4" | 700 | 132 (5.20) | 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-96-935-80 | Valve, pilot with o-ring and valve spring |
Technical Specifications
| Flow Capacity: | 400 scfm (3/4"), 650 scfm (1"), 700 scfm (1-1/4") |
| Max Operating Temperature: | 150°F |
| Max. Supply Pressure: | 20.7 bar (300 psig) |
| Port Size: | 3/4", 1", 1-1/4" (NPT, BSPP) |
| Weight: | 4.0 lbs (1.8 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
