GRACO 25R490 – Medium Pressure Fluid Back Pressure Regulator, 3000 Max psi, 5 gpm Max flow rate,

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