PFH840 High Pressure In-Line Filter Assemblies

Hy-Pro’s PFH pressure filters are designed to protect sensitive components in hydraulic circuits. Install the series upstream of specific components or directly after the pressure pump in smaller systems to minimize risk of failure and costly system downtime.

Ideal for use on a power unit pump discharge filter or pilot filter directly in front of valves and actuators.

Max Operating Pressure: 9137 psi (630 bar)

 

Download Brochure

OPERATING TEMPERATURE

Fluid Temperature

30°F to 225°F

(0°C to 105°C)

Ambient Temperature

-4°F to 140°F

(-20C to 60C)

OPERATING Pressure

5800 psi (400 bar)
min. 2 x 106 pressure cycles
Nominal pressure according to DIN 24550

Flow Fatigue Rating

9137 (630 bar)
min. 2 x 104 pressure cycles
Quasi-static operating pressure

element collapse rating

HP***N

450 psid (31.0 bard) max

HP***H

3000 psid (206.8 bard) max

HP***C

250 psid (17.2 bard) max

ΔP INDICATOR TRIGGER

73 psid (5 bard)

INTEGRAL BYPASS SETTING

87 psid (6.0 bard)

HP***H

Integral element bypass

MATERIALS OF CONSTRUCTION

Head

Cast Steel

Bowl with Drain Plug

DOM Tubing

MATERIALS OF CONSTRUCTION

Interior Coating

Phosphate

Exterior Coating

Industrial Powder Coating

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

SF

Dynafuzz stainless steel fiber media βx[C] ≥ 4000

W

Stainless steel wire mesh media βx[C] ≥ 2

FLUID COMPATIBILITY

Biodegradable and mineral based fluids. For high water based or specified synthetics consult factory.

SIZING GUIDE

Filter Assembly Sizing Guidelines

Effective filter sizing requires consideration of flow rate, viscosity (operating and cold start), fluid type and degree of filtration. When properly sized, bypass during cold start can be avoided/minimized and optimum element efficiency and life achieved. The filter assembly differential pressure values provided for sizing differ for each media code, and assume 32 cSt (150 SUS) viscosity and 0.86 fluid specific gravity. Use the following steps to calculate clean element assembly pressure drop.

Sizing recommendations to optimize performance and permit future flexibility

  • To avoid or minimize bypass during cold start the actualassembly clean ΔP calculation should be repeatedfor start-up conditions if cold starts are frequent.
  • Actual assembly clean ΔP should not exceed 10% of bypassΔP gauge/indicator set point at normal operating viscosity.
  • If suitable assembly size is approaching the upper limitof the recommended flow rate at the desired degreeof filtration consider increasing the assembly to thenext larger size if a finer degree of filtration mightbe preferred in the future. This practice allows thefuture flexibility to enhance fluid cleanliness withoutcompromising clean ΔP or filter element life.
  • Once a suitable filter assembly size is determined considerincreasing the assembly to the next larger size to optimizefilter element life and avoid bypass during cold start.
  • When using water glycol or other specified synthetics, werecommend increasing the filter assembly by 1~2 sizes.
PFH Sizing Guide 2
PFH840 ΔP Factors