Filter Sizing Pressure drop determines filter size Filter

Filter Sizing t Pressure drop depends on: ØFilter Housing ØMedia Grade ØFluid Viscosity –

Filter Sizing Parker Rule-of-Thumb: Maximum Element Clean Pressure Loss: 1/3 bypass valve setting, or

Filter Sizing 50 psid bypass valve = 16. 7 psid 3

Sizing Example t t t t Fluid: Exxon Teresstic 32 Flow: 40 gpm Pressure:

Exxon Teresstic 32 Specifications Data from Exxon handbook: 166 SUS @ 100 o. F

Step 2 t t Determine viscosity range Select housing series based on system pressure,

Step 3 t t t Determine viscosity range Select housing series based on system

Step 4 t t Determine viscosity range Select housing series based on system pressure,

Step 4 40 CN-1 05 Q (150 SUS) 40 CN-1 05 Q (400 SUS)

Step 4 40 CN-2 05 Q (150 SUS) 40 CN-2 05 Q (400 SUS)

Step 4 80 CN-2 05 Q (150 SUS) 80 CN-2 05 Q (400 SUS)

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Filter Sizing

Pressure drop determines filter size

Filter Sizing t Pressure drop depends on: ØFilter Housing ØMedia Grade ØFluid Viscosity – Temperature – Oil Type ØFlow Rate

Filter Sizing Parker Rule-of-Thumb: Maximum Element Clean Pressure Loss: 1/3 bypass valve setting, or less

Filter Sizing 50 psid bypass valve = 16. 7 psid 3

Sizing Example t t t t Fluid: Exxon Teresstic 32 Flow: 40 gpm Pressure: 800 psi Filtration Specification: B 6=200 Operating Temperature: 70 o. F to 120 o. F Bypass Valve: 50 psid Ports: 1 1/2” Full filtration required at the most extreme conditions

Step 1 t Determine Viscosity Range

Exxon Teresstic 32 Specifications Data from Exxon handbook: 166 SUS @ 100 o. F 44 SUS @ 210 o. F Results from chart: 70 o. F = 400 SUS 120 o. F = 110 SUS

Step 2 t t Determine viscosity range Select housing series based on system pressure, mounting, options

Step 3 t t t Determine viscosity range Select housing series based on system pressure, mounting, options Select media grade to match B 6 = 200

Step 3

Step 4 t t Determine viscosity range Select housing series based on system pressure, mounting, options Select media grade to match B 6 = 200 Calculate pressure loss

40 CN-1

Step 4 40 CN-1 05 Q (150 SUS) 40 CN-1 05 Q (400 SUS) Element = 12 psid Element = 32 psid 12(400/150) = 32 Housing = 3. 5 psid Total = 15. 5 psid Total = 35. 5 psid

40 CN-2

Step 4 40 CN-2 05 Q (150 SUS) 40 CN-2 05 Q (400 SUS) Element = 6 psid Housing = 3. 5 psid Element = 16. 0 psid Total = 9. 5 psid 6(400/150) = 16. 0 Housing = 3. 5 psid Total = 19. 3 psid

80 CN-2

Step 4 80 CN-2 05 Q (150 SUS) 80 CN-2 05 Q (400 SUS) Element = 3. 0 psid Housing = 1. 5 psid Element = 8 psid 3. 0(400/150) = 8 Housing = 1. 5 psid Total = 4. 5 psid Total = 9. 5 psid

Filter Sizing