Part Number: 51334
UPC Number: 765809513341
Style: Spin-On Lube Filter
Type: Full Flow
Media: Paper
Height: 3.194
Outer Diameter Top: 3.252
Outer Diameter Bottom: Closed:
Thread Size: 20X1.5 MM
By-Pass Valve Setting-PSI: 8-11
Anti-Drain Back Valve: Yes
Beta Ratio: 2/20=6/20
Burst Pressure-PSI: 280
Max Flow Rate: 9-11 GPM
Nominal Micron Rating: 21
VS
Part Number: 51182
UPC Number: 765809511828
Type: Full Flow
Media: Paper
Height: 5.207
Outer Diameter Top: 3.66
Outer Diameter Bottom: Closed:
Thread Size: 20X1.5 MM
By-Pass Valve Setting-PSI: 24
Anti-Drain Back Valve: Yes
Beta Ratio: 2/20=6/20
Burst Pressure-PSI: 350
Max Flow Rate: 7-9 GPM
Nominal Micron Rating: 21
How does the 1334 have a have a higher flow rate than the 51182(bigger) but they both have the same nominal micron rating?