GRACO 25R457 - Low Shear Fluid Back Pressure Regulator, 300 Max psi, 25 gpm Max flow rate, SST, Pneumatic, high wear, sanitary Inlet/Outlet, 100 PSI
Low shear back pressure regulator designed to minimize material waste and maximize service life with shear-sensitive, high solid materials. Features Ultralife ceramic coated parts for high wear resistance and innovative flow path geometry for industry-leading low shear capability that minimizes paint shear and produces consistent finish quality.
Graco’s low shear back pressure regulator (BPR) minimizes shear and prevents paint degradation so that manufacturers produce consistent finish quality.
Additional Specifications
- Material: SST, Acetal and PTFE
- Regulated Pressure: 25-250 PSI (1.7-17)
- Type: Air Operated
- Wetted Parts: SST, Acetal and PTFE
- Flow Range: 5-25 gpm, 19-95 lpm
- Regulated Fluid Pressure: 25-250 PSI (1.7-1.72 MPa, 1.7-17.2 bar)
- Temperature Range: 0°C to 50°C
- Approvals: CE, Ex h IIB T6 Gb
- Protection Type: constructional safety 'c'
- Fluid Air Ratio: approximately 2.5:1
- Inlet Air Pressure: 100 PSI (0.7 MPa, 7.0 bar)
- Max Air Pressure: 100 PSI (0.7 MPa, 7.0 bar)
Specifications
| Compatible Material | Waterborne, Solventborne |
| Gauge Port Size (in) | 1/4 |
| Gauge Port Type | NPT |
| Inlet Size (in) | 1.5 |
| Inlet Thread Type | Sanitary Flange |
| Maximum Air Inlet Pressure (psi) | 100 |
| Maximum Flow Rate (GPM) | 25 |
| Maximum Operating Temperature (°F) | 122 |
| Maximum Regulated Pressure (psi) | 250 |
| Maximum Viscosity (cP) | 1000 |
| Maximum Working Pressure (psi) | 300 |
| Minimum Operating Temperature (°F) | 32 |
| Minimum Regulated Pressure (MPa) | 0.17 |
| Minimum Regulated Pressure (psi) | 25 |
| Outlet Size (in) | 1.5 |
| Outlet Thread Type | Sanitary Flange |
| Type | Back Pressure Regulator |
| Wetted Material | Stainless Steel, Tungsten Carbide |
Features
- Minimizes material waste caused by paint shear
- Maximizes service life with Ultralife ceramic coated parts that withstand high wear
- Best-in-class performance maintaining pressure constant with broad range of flow rates
- Low profile, compact design for easy installation
- Backwards compatibility for easy replacement
- Innovative flow path geometry for industry-leading low shear capability
Applications
- Shear sensitive, high solid materials
- Paint finishing applications
- Industrial coating applications
Compatible Equipment
- Intelligent Paint Kitchen (IPK) systems for energy consumption and paint shear control
Related Parts
- 25R488
- 25R647
- 25R457
- 25T509 - Conversion kit for 25R647 to pneumatic operation
- 25T508 - Conversion kit for 25R488 to pneumatic operation
- 25R842 - High-Flo diaphragm repair kit
- 25T507 - Low-Flo diaphragm repair kit
- 25R487, 25R4B7
Air operated model that works with Intelligent Paint Kitchen (IPK) control to reduce energy consumption and paint shear. Gauge included. For installation and operation instructions, use manual 3A7527. Air operated type with higher flow capacity. Has explosion protection rating Ex h IIB T6 Gb with constructional safety 'c' protection type. This is identified as a higher flow unit compared to the 25R4B7 lower flow units. Maximum air pressure should not exceed 100 PSI (0.7 MPa, 7.0 bar).
Reference Manuals
