Graco 25R490, Instructions - Parts Manual

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Technical Specifications
14 3A7681A
Technical Specifications
* Regulated range is 250–1000 psi (1.7–7 MPa, 17–70 bar) above 3 gpm (11 lpm).
Molykote
®
is a registered trademark of the Dow Corning Corporation.
California Proposition 65
Medium Pressure Back Pressure Regulator
US Metric
Maximum fluid inlet pressure 3000 psi 21 MPa, 207 bar
Maximum air pressure (Air Operated Type) 100 psi 0.7 MPa, 7 bar
Regulated fluid pressure range
25T478 (10:1) 100–1000 psi* 7–70 bar*
25T477 (20:1) 250–2000 psi 17–138 bar
25R490 (30:1)
250–3000 psi 17–207 bar
25R491 (mechanical)
Flow range 0–5 gpm 0–19 Ipm
Maximum fluid temperature 122°F (50°C)
Maximum recommended viscosity 200–250 cP (depending on flow rate)
Inlet/Outlet Sizes
Air inlet size 1/4 in. npt(m)
Gauge port size 1/4 in. npt(f)
Inlet (all models) (1) 3/8 in. npt(f), (1) 1/4 in. npt(f) gauge port
Outlet size (all models) (2) 3/8 in. npt(f)
Weight
25T478 (10:1) 4.0 lb 1.8 kg
25T477 (20:1) 3.7 lb 1.7 kg
25R490 (30:1) 4.7 lb 2.1 kg
25R491 (mechanical) 4.5 lb 2.0 kg
Noise
Sound pressure level at maximum flow rate Less than 75 dB(A)
Materials of Construction
Wetted parts Stainless steel, tungsten carbide, PTFE, acetal homopolymer
CALIFORNIA RESIDENTS
WARNING: Cancer and reproductive harm – www.P65warnings.ca.gov.