Page 243 - Schroeder - Hydraulic And Lube Filtration

Tank-Mounted Return Line Filter GRTB

Type Fluid Appropriate Schroeder Media Fluid IRF
Petroleum Based Fluids All E media (cellulose), Z-Media and ASP media (synthetic) Compatibility TF1
®
Invert Emulsions 10 and 25 µ Z-Media and 10 µ ASP media (synthetic)
®
KF3

KL3

LF1–2"

MLF1
Element Element selections are predicated on the use of 150 SUS (32 cSt) Element
Pressure Series Part No. petroleum based fluid and a 25 psi (1.7 bar) bypass valve. Selection RLD
KBG3 1KBG3 Based on
E KBG10 1KBG10 Flow Rate GRTB
Media
KBG25 1KBG25
Return MTA
Line KBGZ1 1KBGZ1
-Tank- KBGZ3 1KBGZ3
Mounted Z- MTB
Media ® KBGZ5 1KBGZ5
KBGZ10 1KBGZ10 ZT
KBGZ25 1KBGZ25
gpm 0 40 60 80 100 KFT
Flow
(L/min) 0 50 150 250 380
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

LRT
Pressure
∆P housing ∆P element
GRTB ∆P housing for fluids with sp gr = 0.86: ∆P element = flow x element ∆P factor x viscosity factor Drop ART
Flow (L/min) El. ∆P factors @ 150 SUS (32 cSt): Information
12 (50) (150) (250) (350) Based on
(0.75) 1K BFT
10 Flow Rate
KBG3 .25
8 (0.50) KBG10 .09 and Viscosity
∆P psi 6 4 ∆P (bar) KBG25 .02 QT
2 (0.25) KBGZ1 .20 KTK
.10
KBGZ3
0 KBGZ5 .08
0 25 50 75 100
Flow gpm KBGZ10 .05 LTK
sp gr = specific gravity KBGZ25 .04
Sizing of elements should be based on element flow MRT
information provided in the Element Selection chart above. If working in units of bars & L/min, divide above
factor by 54.9.
∆P filter = ∆P housing + ∆P element Viscosity factor: Divide viscosity by 150 SUS (32 cSt). Accessories
Exercise: for Tank-
Determine ∆P at 75 gpm (284 L/min) for Mounted
GRTB1KBGZ10S using 200 SUS (44 cSt) fluid.
Filters
Solution:
∆P housing = 7.25 psi [.50 bar] PAF1
∆P element = 75 x .05 x (200÷150) = 5.0 psi
or
= [284 x (.05÷54.9) x (44÷32) = .36 bar] MAF1
∆P total = 7.25 + 5.0 = 12.25 psi
or
= [.50 + .36 = .86 bar] MF2

SCHROEDER INDUSTRIES 241