KF3 Series Return Filters, Up To 100 GPM & 300 PSI

Description & Features

Bypass Setting	Cracking: 30 psi, Full Flow: 51 psi.
Element Change Clearance	1.50''
Features	Meets HF4 automotive standard. Offered in pipe, SAE straight thread, flange and ISO 228 porting. Various Dirt Alarm® options.
Flow Rating	Up to 100 gpm for 150 SUS fluids.
Housing	Die Cast Aluminum Head, Steel Element Case.
Maximum Operating Pressure	300 psi.
Temperature Range	-20°F to 225°F

Model Number	Length	Element	Micron Rating	Seal Material	Ports	Includes	Features	Price	Action
KF31KZ25SD5 KF3 Series Return Filter	9.0	Synthetic	25	Buna-N	SAE-24	Pop-Up Indicator

Question by: Peggy B on Nov 24, 2025, 9:21 AM

reckon this filter housing could hold up if it was mounted on a piece of heavy equipment that bounces around all day?

Answer by: Customer Support on Nov 26, 2025, 6:35 AM

The die cast aluminum head and steel element case provide a durable, lightweight construction suited to both mobile and stationary equipment.