BFTTR Tank-Mounted Return Line Filters



Related Documents:
Spec/Diagram PDF

Item Information:

Tank Mounted Return Line Hydraulic Filter Assemblies.

Flows to 160 gpm (600 l/min) 

Port Sizes to 2-1/2”

  • Heavy duty cast aluminum alloy head and cover is rugged and robust.
  • Compatible with fluid types HH-HL-HM-HV-HTG (according to ISO 6743/4). Consult factory for other fluids.
  • Optional accessories include gauge indicator, electrical indicator, and filling port.
  • Filter element top cap includes a handle for easy removal and replacement of filter elements.


Recommended Operating Condtions  

Type:                                Tank Top Return Line Filter

Flow Rate:                        up to 160 gpm (605 lpm)

Temperature Range:         -10°F to 230°F (-25°C to 110°C)

Bypass Valve:                   25 psid (1.7 bar) ± 10%

Max Working Pressure:    43.5 psi (3 bar)

Test Pressure:                   72.5 psi (5 bar)

Burst Pressure: ?              145 psi (10 bar)

Fatigue Test:                      0-43.5 psi (3 bar), 300,000 cycles




Materials of Construction  

Head and Cover:      Aluminum alloy

Filter Bowl:               BFTTR0301, 1001, 1002, 1003, 1801

                                               Polyamide material

                                 BFTTR0111, 1801A, 4001, 4002, 4003, 4003A

                                                Zinc plated steel material

Bypass Valve:           Polyamide material

Indicator Housing:     Brass Material

Seals:                        NBR Nitrile (Standard)

                                  FKM Viton (on request)

Fluid Compatibility  

Compatible Fluids:      HH-HL-HM-HV-HTG (ISO 6743/4)(mineral based hydraulic fluids)

Other Fluids:               Contact Behringer for support when using other fluids such as phosphate ester or water glycol.



 Filter Sizing

When sizing the filter, you must take into consideration both the initial pressure drop (Δp) of the complete filter assembly (filter housing plus the filter element), as well as the fluid velocity through the filter. In return lines, it is recommended that the velocity be in the range of 5 - 13.5 ft. /sec. (1.5 - 4 m/sec.). The chart below outlines the optimal fluid velocity by connection size.

Flow Curves BFTTR


Flow Curves BFTTR
Contamination Indicators


Rear Mount Gauge
The connection for the contamination indicator is on the back side of the dial
Bottom Mount Gauge
The connection for the contamination indicator is on the bottom of the dial
Electric Pressure Switch
This is an electrical SPDT pressure switch. 
Order Code

  Complete Filter