Page 295 - Schroeder - Hydraulic And Lube Filtration

Medium Pressure In-Tank Filter MRT

Type Fluid Appropriate Schroeder Media Fluid IRF
Petroleum Based Fluids All E media (cellulose) and Z-Media (synthetic) Compatibility TF1
®
High Water Content All Z-Media (synthetic)
®
Invert Emulsions 10 and 25 µ Z-Media (synthetic) KF3
®
®
Water Glycols 3, 5, 10 and 25 µ Z-Media (synthetic)
KL3
Element Element selections are predicated on the use of 150 SUS (32 cSt) Element LF1–2"
Pressure Series Part No. petroleum based fluid and a 40 psi (2.8 bar) bypass valve. Selection
18LZ1/18LDZ1 18LDZ1 18LZ1 Based on
Flow Rate MLF1
Return 18LZ3/18LDZ3 18LZ3/18LDZ3
Line ® 18LZ5/18LDZ5 18LZ5/18LDZ5
Tank- Z-Media RLD
Mounted 18LZ10/18LDZ10 18LZ10/18LDZ10
18LZ25/18LDZ25 18LZ25/18LDZ25 GRTB
gpm 0 25 50 75 100 125 150
Flow MTA
(L/min) 0 100 200 300 400 570
Shown above are the elements most commonly used in this housing.
MTB
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.
ZT

Pressure KFT
∆P housing ∆P element
Drop
MRT ∆P housing for fluids with sp gr = 0.86: ∆P element = flow x element ∆P factor x viscosity factor
El. ∆P factors @ 150 SUS (32 cSt): Information RT
Based on
18L 18LD Flow Rate RTI
18LZ1 .10 18LDZ1 .12 and Viscosity
18LZ3 .05 18LDZ3 .06 LRT
18LZ5 .04 18LDZ5 .05
18LZ10 .03 18LDZ10 .03 ART
18LZ25 .02 18LDZ25 .02
BFT
If working in units of bars & L/min, divide above factor
by 54.9. QT
sp gr = specific gravity Viscosity factor: Divide viscosity by 150 SUS (32 cSt).
KTK
Sizing of elements should be based on element flow information provided in the Element Selection chart above.
LTK

Notes ∆P filter = ∆P housing + ∆P element MRT
Exercise:
Determine ∆P at 120 gpm (455 L/min) for Accessories
MRT18LZ5S24S24D5 using 200 SUS (44 cSt) fluid.
for Tank-
Solution: Mounted
∆P housing = 3.0 psi [.21 bar] Filters
∆P element = 120 x .04 x (200÷150) = 6.4 psi
or
= [455 x (.02÷54.9) x (44÷32) = .23 bar] PAF1
∆P total = 3.0 + 6.4 = 9.4 psi
or MAF1
= [.21 + .23 = .44 bar]

MF2

SCHROEDER INDUSTRIES 293