Pressure Filter SF/SFA Valves

FILTRATION

Design Code

only for information

Valves

The optional valves are fitted as an insert in the filter head and incorporate the spigot on which the element seals.

The valve is selected to suit the filter application.

HV-O Non-by-pass standard insert without any valve

function. Element collapse rating should be higher

than system pressure

HV-B By-pass valve which allows oil to bypass the

element when the differential pressure across the

element reaches 6

+0,5

bar (87

+7,25

PSI). (Other

pressure settings available on request). The

opening pressure should be higher than the ∆p

setting of an optional clogging indicator. Low

collapse (30 bar / 435 PSI ∆p) elements

are normally used with this valve.

HV-R Reverse flow valve is used in systems where

there is flow in reverse through the filter. It allows

reverse flow without back-flushing the element

but does not filter in the reverse direction.

Element collapse rating should be higher than

the system pressure.

HV-N Non-return valve

This valve prevents the oil in the delivery line

from draining out while the filter is being

serviced. Because there is no by-pass, the

element collapse rating should be higher than

system pressure.

HV-M Multi-function valve

This valve combines the by-pass, the reverse

flow and the non-return functions in one unit. The

by-pass opening pressure is 6

+0,5

bar (87

+7,25

PSI) ∆p with other opening pressures available

on request. The opening pressure should be

higher than the ∆p setting of an optional clogging

indicator. Low collapse (30 bar / 435 PSI ∆p)

elements are normally used with this valve.

HV – M 014/030 /X

Code Valve Type

Non-bypass standard

insert without any valve

B By-pass Valve

R Reverse Flow Valve

N Non Return Valve

M Multi-Function Valve

Filter Group

014/030

045/070/125

090/160/250/300

Valves

Flow characteristics of the valves see page F11

HV-O HV-B HV-R

HV-N

HV-M