The BF series is a series of particulate tank breathers that are designed to filter particulate matter out of the air entering fuel tanks, reservoirs, gearboxes, etc… and are offered in both metal and plastic construction with a wide range of tank connection options.

While the ELF Series is a line of filler breathers that offer not only a particulate breather for your hydraulic system but also a filter basket which will allow you to fill the tank trough the same opening.
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Clear Filter

Type of Connection

  • BSPP
  • Flanged
  • Flanged Connection to DIN 24557/T2
  • Metric Threads
  • NPT
  • SAE
  • Thread BSPP
  • Weld Adapter

Connection Size

  • 1 in
  • G 1/4
  • 3/8 NPT
  • G 3/8
  • 1/2 NPT
  • G 1/2
  • G 3/4
  • G 3/4 Female
  • G 3/4 Weld Adapter
  • G 3/4, G 3/8
  • G 3/4, G 1/2
  • 3/4 NPT
  • G1
  • 1 NPT
  • 1-1/2 in. -16 UN 2B Female
  • G 2 1/2 BSPP (ISO 228, Female)
  • G 2-1/2 Female
  • SAE-12
  • SAE-16
  • SAE-20
  • M22x1.5
  • M30x1.5
  • M42x2
  • Flanged (DN93, 4 bolt
  • Flanged (DN 125, 8 bolt)

Tank Thread Connection

  • 2 1/2

Cap Material

  • Epoxy Coated Steel

Filtration Rating (µm)

  • 1
  • 2
  • 3
  • 10

Part Number

Model Code Description

Type of Connection

Connection Size

Tank Thread Connection

Cap Material

Gauge Option

Filtration Rating

Core Products

N/A BF P 10 G 3 W 1.0 N/A BSPP N/A G 1/4 N/A N/A N/A Without Indicator N/A 3 µm
N/A BF P 10 G 3 W 1.0 /-AS N/A BSPP N/A G 1/4 N/A N/A N/A Without Indicator N/A 3 µm
N/A BF P 10 G 3 W 1.0 /-FP N/A BSPP N/A G 1/4 N/A N/A N/A Without Indicator N/A 3 µm
N/A BF P 10 G 3 W 2.0 /-AS N/A BSPP N/A G 3/8 N/A N/A N/A Without Indicator N/A 3 µm
N/A BF P 10 G 3 W 2.0/-RV0.4 N/A BSPP N/A G 3/8 N/A N/A N/A Without Indicator N/A 3 µm
N/A BF P 10 M 3 W 1.0 N/A Metric Threads N/A M22x1.5 N/A N/A N/A Without Indicator N/A 3 µm
N/A BF P 10 M 3 W 1.0 /-AS N/A Metric Threads N/A M22x1.5 N/A N/A N/A Without Indicator N/A 3 µm
N/A BF P 10 M 3 W 1.0 /-RV0.08 N/A Metric Threads N/A M22x1.5 N/A N/A N/A Without Indicator N/A 3 µm
N/A BF P 10 M 3 W 1.0 /-RV0.2 N/A Metric Threads N/A M22x1.5 N/A N/A N/A Without Indicator N/A 3 µm
N/A BF P 10 M 3 W 1.0 /-RV0.4 N/A Metric Threads N/A M22x1.5 N/A N/A N/A Without Indicator N/A 3 µm
N/A BF P 10 M 3 W 1.0 /-RV0.7 N/A Metric Threads N/A M22x1.5 N/A N/A N/A Without Indicator N/A 3 µm
N/A BF P 10 M 3 W 1.0/-AS-FP N/A Metric Threads N/A M22x1.5 N/A N/A N/A Without Indicator N/A 3 µm
N/A BF P 10 N 3 W 1.0 N/A NPT N/A 1/2 NPT N/A N/A N/A Without Indicator N/A 3 µm
N/A BF P 10 N 3 W 1.0 /-AS N/A NPT N/A 1/2 NPT N/A N/A N/A Without Indicator N/A 3 µm
N/A BF P 10 N 3 W 1.0 /-RV0.2 N/A NPT N/A 1/2 NPT N/A N/A N/A Without Indicator N/A 3 µm
N/A BF P 10 N 3 W 1.0 /-RV0.4 N/A NPT N/A 1/2 NPT N/A N/A N/A Without Indicator N/A 3 µm
N/A BF P 10 N 3 W 2.0 /-AS N/A NPT N/A 3/8 NPT N/A N/A N/A Without Indicator N/A 3 µm
N/A BF P 10 N 3 W 2.0 /-RV0.2 N/A NPT N/A 3/8 NPT N/A N/A N/A Without Indicator N/A 3 µm
N/A BF P 10 U 3 W 3.0 /-AS N/A SAE N/A SAE-12 N/A N/A N/A Without Indicator N/A 3 µm
N/A BF P 10 U 3 W 3.0 /-RV0.2 N/A SAE N/A SAE-12 N/A N/A N/A Without Indicator N/A 3 µm
N/A BF P 10 U 3 W 3.0 /-RV0.4 N/A SAE N/A SAE-12 N/A N/A N/A Without Indicator N/A 3 µm
N/A BF P 10 U 3 W 3.0 /-RV0.7 N/A SAE N/A SAE-12 N/A N/A N/A Without Indicator N/A 3 µm
N/A BF PP 10 N 3 W 1.0 N/A NPT N/A 1/2 NPT N/A N/A N/A Without Indicator N/A 3 µm
N/A ELF P 3 F 10 W 1.0 N/A Flanged Connection to DIN 24557/T2 N/A N/A N/A Epoxy Coated Steel N/A Without Indicator N/A 10 µm
N/A ELF P 3 F 10 W 4.0/-RV N/A Flanged Connection to DIN 24557/T2 N/A N/A N/A Epoxy Coated Steel N/A Without Indicator N/A 10 µm
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