Page 223 - Schroeder - Hydraulic And Lube Filtration

Return Line Filter KF3

Type Fluid Appropriate Schroeder Media Fluid IRF
Petroleum Based Fluids All E media (cellulose), Z-Media and ASP media (synthetic) Compatibility TF1
®
®
High Water Content All Z-Media and ASP Media (synthetic)
®
Invert Emulsions 10 and 25 µ Z-Media (synthetic), 10 µ ASP media (synthetic) KF3
®
Water Glycols 3, 5, 10 and 25 µ Z-Media (synthetic), 3, 5, and 10 µ ASP Media (synthetic)
®
Phosphate Esters All Z-Media (synthetic) with H (EPR) seal designation and 3 and 10 µ KL3
E media (cellulose) with H (EPR) seal designation and all ASP media (synthetic)
®
Skydrol ® 3, 5, 10 and 25 µ Z-Media (synthetic) with H.5 seal designation and W media (water
removal) with H.5 seal designation (EPR seals and stainless steel wire mesh in element, ® LF1–2"
and light oil coating on housing exterior) and all ASP media (synthetic) Skydrol is a registered
trademark of Solutia Inc.
Element Element selections are predicated on the use of 150 SUS (32 cSt) Element MLF1
Pressure Series Part No. petroleum based fluid and a 30 psi (2.1 bar) bypass valve. Selection
Based on RLD
K3 1K3 2K3 † 3K3 Flow Rate
E K10 1K10 2K10 † 3K10 †
Media GRTB
K25 1K25 2K25 †
To KZ1 1KZ1 2KZ1 † 3KZ1 †
300 psi † MTA
(20 bar) KZ3 1KZ3 2KZ3
Z- KZ5 1KZ5 2KZ5 †
Media ® MTB
KZ10 1KZ10
KZ25 1KZ25 ZT
gpm 0 20 40 60 80 100
Flow
(L/min) 0 50 150 250 380 KFT
† Double and triple stacking of K-size elements can be replaced by single KK & 27K elements, respectively.
Shown above are the elements most commonly used in this housing.
RT
Note: Contact factory regarding use of E media in High Water Content, Invert Emulsion and Water Glycol Applications.
For more information, refer to Fluid Compatibility: Fire Resistant Fluids, pages 19 and 20.
RTI
Pressure
∆P housing ∆P element
KF3 ∆P housing for fluids with sp gr = 0.86: ∆P element = flow x element ∆P factor x viscosity factor Drop LRT
El. ∆P factors @ 150 SUS (32 cSt): Information
Based on
1K 2K 3K 1K 2K Flow Rate ART
K3 .25 .12 .08 and Viscosity
K10 .09 .05 .03
K25 .02 .01 .01 BFT
KZ1 .20 .10 .05 KDZ1 .24 .12
KZ3/KAS3 .10 .05 .03 KDZ3 .12 .06 QT
KZ5/KAS5 .08 .04 .02 KDZ5 .10 .05
KZ10/KAS10 .05 .03 .02 KDZ10 .06 .03
KZ25 .04 .02 .01 KDZ25 .04 .02 KTK
1K 2K
KZW1 .43 LTK
sp gr = specific gravity KZW3
Sizing of elements should be based on element flow KZW5 .32 .16
.14
.28
information provided in the Element Selection chart MRT
above. KZW10 .23 .12
KZW25 .14 .07
∆P filter = ∆P housing + ∆P element If working in units of bars & L/min, divide above factor Accessories
Exercise: by 54.9. for Tank-
Determine ∆P at 60 gpm (225 L/min) for KF32KZ5SD5 Viscosity factor: Divide viscosity by 150 SUS (32 cSt). Mounted
using 200 SUS (44 cSt) fluid.
Filters
Solution:
∆P housing = 3.5 psi [.24 bar] PAF1
∆P element = 60 x .04 x (200÷150) = 3.2 psi
or
= [225 x (.04÷54.9) x (44÷32) = .23 bar] MAF1
∆P total = 3.5 + 3.2 = 6.7 psi
or MF2
= [.24 + .23 = .47 bar]

SCHROEDER INDUSTRIES 221