GRACO 25R490 - Medium Pressure Fluid Back Pressure Regulator, 3000 Max psi, 5 gpm Max flow rate, SST, Pneumatic, 3/8" NPT
Medium pressure pneumatic back pressure regulator designed to improve finishing process control by maintaining consistent upstream fluid pressure regardless of flow demand. Features better resolution than competitive brands for more accurate pressure control and interfaces with GRACO's Intelligent Paint Kitchen (IPK) system for automated pressure and flow control without human intervention.
- Flow Rate: 0-5 gpm
- Thread: 3/8 in. NPT
- Type: Pneumatic
- Inlet Outlet Size: 3/8 in. NPT
- Dimension A: 4.84 in. (123 mm)
- Dimension B: 2.38 in. (60 mm)
- Flow Range: 0-5 gpm, 0-19 lpm
- Regulated Fluid Pressure: 250-3000 PSI (1.7-20.7 MPa, 17-207 bar)
- Max Fluid Inlet Pressure: 3000 PSI (20.7 MPa, 207 bar)
- Max Air Working Pressure: 100 PSI (0.7 MPa, 7.0 bar)
- Approvals: CE, Ex h IIB T6 Gb, 0°C to 50°C
- Protection Type: constructional safety 'c'
Specifications
| Compatible Material | Waterborne, Solventborne |
| Gauge Port Size (in) | 1/4 |
| Gauge Port Type | NPT |
| Inlet Size (in) | 0.375 |
| Inlet Thread Type | NPT |
| Maximum Air Inlet Pressure (psi) | 100 |
| Maximum Flow Rate (GPM) | 5 |
| Maximum Operating Temperature (°F) | 122 |
| Maximum Regulated Pressure (psi) | 3000 |
| Maximum Viscosity (cP) | 250 |
| Maximum Working Pressure (psi) | 3000 |
| Minimum Operating Temperature (°F) | 32 |
| Minimum Regulated Pressure (psi) | 250 |
| Outlet Size (in) | 0.375 |
| Outlet Thread Type | NPT |
| Type | Back Pressure Regulator |
| Wetted Material | Stainless Steel, Tungsten Carbide, PTFE, Acetal Homopolymer |
Features
- Maintains upstream fluid pressure regardless of flow demand
- Better resolution than other brands for more accurate pressure control
- Interfaces with GRACO's Intelligent Paint Kitchen (IPK) system
- Controls pressure and flow without human intervention
- Pneumatic operation for improved finishing process control
Applications
- Finishing process control
- Paint spraying applications
- Fluid pressure regulation in coating systems
- Integration with intelligent paint kitchen systems
Compatible Equipment
- GRACO's Intelligent Paint Kitchen (IPK)
- Spray guns and flow control valves
Related Parts
- 25T477 - Medium Pressure Fluid Back Pressure Regulator, 2000 Max psi, 5 gpm Max flow rate, SST, Pneumatic, 3000 PSI, 3/8" NPT
- 25T478 - Medium Pressure Fluid Back Pressure Regulator, 1000 Max psi, 5 gpm Max flow rate, SST, Pneumatic, 3/8" NPT
- 25R491 - Medium Pressure Fluid Back Pressure Regulator, 3000 Max psi, 5 gpm Max flow rate, SST, Mechanical w/ locking nut, 3/8" NPT
- 105770 - Pressure Gauge, 0-1000 PSI, Stainless, Bottom Mount, 1/4" NPT(M)
- 17L706 - Pressure Gauge, 0-3000 PSI, Stainless, Bottom Mount, 1/4" NPT(M)
Part of GRACO's medium pressure BPR family. Installation and operation instructions available in manual 3A7681. Pneumatic back pressure regulator with low flow capacity and medium pressure rating. Part of the BPR family with explosion-proof certification. Part 25R490 is shown in the exploded view diagram (Fig. 2) but no detailed specifications are provided on this page. Assembly instructions reference various torque specifications and lubricants but don't specify which apply to this particular part number.
Reference Manuals
- 345174 (Page 2) Medium Pressure BPRs
- 3A7681 (Page 2) Medium Pressure Back Pressure Regulators
