GRACO 25R488 – Low Shear Fluid Back Pressure Regulator, 300 Max psi, 10 gpm Max flow rate, SST,

GRACO 25R488 – Low Shear Fluid Back Pressure Regulator, 300 Max psi, 10 gpm Max flow rate, SST, Mechanical, high wear, sanitary Inlet/Outlet

Low shear back pressure regulator designed to minimize material waste and maximize service life. Features innovative flow path geometry that minimizes paint shear for high solid, shear sensitive materials while maintaining consistent pressure across broad flow rate ranges. Compact design with backwards compatibility ensures easy installation and replacement.

Gracos 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 bar)

Max Delivery: 10 GPM (38 lpm)

Wetted Parts: SST, Acetal and PTFE

Type: Spring operated

Gauge Included: Yes

Flow Range: 0-10 gpm, 0-38 lpm

Regulated Fluid Pressure: 25-250 PSI (.17-1.72 MPa, 1.7-17.2 bar)

Approvals: CE, Ex II 2 G, Ex h IIB T6 Gb, 0°C to 50°C

Protection Type: constructional safety ‘c’

Flow Type: Lower Flow

Operation: Mechanical (Spring)

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 Flow Rate (GPM)	10
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

Best-in-class pressure constant performance across broad flow rate range

Low profile, compact design

Backwards compatibility for easy installation and replacement

Innovative flow path geometry provides industry-leading low shear capability

Applications

High solid materials coating

Shear sensitive materials

Paint finishing applications

Industrial coating processes

Compatible Equipment

Intelligent Paint Kitchen (IPK) systems

Mechanical (Spring) Operated BPR

Related Parts

25R487 – Low Shear Fluid Back Pressure Regulator, 300 Max psi, 10 gpm Max flow rate, SST, Pneumatic, high wear, sanitary Inlet/Outlet, 100 PSI

25R457 – Low Shear Fluid Back Pressure Regulator, 300 Max psi, 25 gpm Max flow rate, SST, Pneumatic, high wear, sanitary Inlet/Outlet, 100 PSI

25R647 – Low Shear Fluid Back Pressure Regulator, 300 Max psi, 25 gpm Max flow rate, SST, Mechanical, high wear, sanitary Inlet/Outlet, 300 PSI

25T509

25T508

25R842

25T507 – Kit, Diaphragm, Fluid, Low F, Bpr

Spring-operated mechanical back pressure regulator with sanitary tri-clamp connections. Works with IPK control to reduce energy consumption and paint shear. Manual 3A7527 provides installation and operation instructions. This is a mechanical (spring) type back pressure regulator with lower flow capacity. Temperature range is 0°C to 50°C. Type of Protection ‘h’ applied is constructional safety ‘c’. This is the lower flow version of a mechanical spring-operated back pressure regulator. Part 25R647 is the higher flow version. The diagram shows this as part of a conversion kit system – to convert to air operation, parts need to be removed and replaced with air version kit parts (reference page 13).

Reference Manuals

345172 (Page 1) 345172 Low Shear BPR

3A7527 (Page 2) Low Shear Back Pressure Regulator