PF4 High Pressure Base Mounted Filter Assemblies Specifications

PF4 High Pressure Base Mounted Filter Assemblies

Hy-Pro PF4 pressure filters are designed for protecting sensitive components in hydraulic circuits. Install the series upstream of specific components or directly after the pressure pump to minimize risk of failure and costly system downtime.

Ideal for components that are sensitive to particulate contamination, such as the servo valve, and require clean pressurized fluid for reliable operation.

Overview
Specs

PF4 Drawing

Operating Temperature

-20°F to 250°F

(-29°C to 121°C)

operating Pressure

6,000 psi (414 bar) max code 62 port only

5,500 psi (379 bar) max all other ports

Flow Fatigue Rating

3,500 psi (238 bar)

Burst Pressure

16,400 psi (1130 bar)

ΔP Indicator Trigger

70 psid (4.8 bard) for both bypass and non-bypass

Refer to Appendix for indicator wiring diagrams

Element Collapse Rating

HPK

290 psid (20.0 bard)

HPK3

3000 psid (206.8 bard)

HPK5

5000 psid (344.7 bard)

HPKC

150 psid (10.3 bard)

Inegral bypass setting

90 psid (6.2 bard)

Materials of Construction

Head/Lid

Ductile iron

Bowl

Seamless steel tubing

Assembly Bypass Valve

Delrin

media Description

M

G8 Dualglass, our latest generation of DFE rated, high performance glass media for all hydraulic & lubrication fluids. βx[C] ≥ 4000

A

G8 Dualglass high performance media combined with water removal scrim. βx[C] ≥ 4000

W

Stainless steel wire mesh media βx[C] ≥ 2

Fluid Compatibility

Petroleum and mineral based fluids (standard). For polyol ester, phosphate ester, and other specified synthetic fluids use fluorocarbon seal option or contact factory.

Replacement Elements

ΔP Factor

Max flow rates and ΔP factors assume υ = 150 SUS, 32 cSt. See filter assembly sizing guideline for viscosity conversion formula on page 22 for viscosity change.

Filter sizing chart

Max flow rates and ΔP factors assume υ = 150 SUS, 32 cSt. See filter assembly sizing guideline for viscosity conversion formula on page 22 for viscosity change.