Page 161 - Schroeder - Hydraulic And Lube Filtration

Medium Pressure Filter RLT
SAME DAY SHIPMENT MODEL AVAILABLE!

Type Fluid Appropriate Schroeder Media Fluid GH
Petroleum Based Fluids All E media (cellulose) and Z-Media (synthetic) Compatibility
®
High Water Content All Z-Media (synthetic) RLT
®
Invert Emulsions 10 and 25 µ Z-Media (synthetic)
®
®
Water Glycols 3, 5, 10 and 25 µ Z-Media (synthetic) KF5
®
Phosphate Esters All Z-Media (synthetic) with H (EPR) seal designation
®
Skydrol ® 3, 5, 10 and 25 µ Z-Media (synthetic) with H.5 seal designation (EPR seals and Skydrol is a registered
®
stainless steel wire mesh in element, and light oil coating on housing exterior) trademark of Solutia Inc. SRLT
Element
Element Element selections are predicated on the use of 150 SUS (32 K9
Pressure Series Part No. cSt) petroleum based fluid and a 40 psi (2.8 bar) bypass valve. Selection
Based on
9V3 & 14V3 9V3 14V3 Contact Factory
E Media Flow Rate
9V10 & 14V10 9V10 14V10 Contact Factory 2K9
9VZ1 & 14VZ1 9VZ1 14VZ1 Contact Factory
To
800 psi 9VZ3 & 14VZ3 9VZ3 14VZ3 Contact Factory 3K9
(55 bar) Z- 9VZ5 & 14VZ5 9VZ5 14VZ5
Media ®
9VZ10 & 14VZ10 9VZ10 & 14VZ10 QF5
9VZ25 & 14VZ25 9VZ25 & 14VZ25
gpm 0 10 20 30 40 50 60 70
Flow 3QF5
(L/min) 0 50 100 150 200 270
Shown above are the elements most commonly used in this housing. requires size 20 porting
QFD2
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.

∆P housing ∆P element Pressure QFD5
Drop
RLT ∆P housing for fluids with sp gr = 0.86: ∆P element = flow x element ∆P factor x viscosity factor
Information QF15
El. ∆P factors @ 150 SUS (32 cSt):
Based on
9V 14V Flow Rate
9V3 .32 14V3 .19 and Viscosity QLF15
9V10 .24 14V10 .15
9VZ1 .34 14VZ1 .21
9VZ3 .21 14VZ3 .17
9VZ5 .13 14VZ5 .09 SSQLF15
9VZ10 .11 14VZ10 .08
9VZ25 .06 14VZ25 .05

If working in units of bars & L/min, divide above factor by 54.9.
Viscosity factor: Divide viscosity by 150 SUS (32 cSt).

sp gr = specific gravity
Sizing of elements should be based on element flow information provided in the Element Selection chart above.

Notes ∆P filter = ∆P housing + ∆P element
Exercise:
Determine ∆P at 40 gpm (150 L/min) for RLT9VZ5S16D5
using 200 SUS (44 cSt) fluid.
Solution:
∆P housing = 5.5 psi [.35 bar]
∆P element = 40 x .13 x (200÷150) = 6.9 psi
or
∆P eleme = [150 x (.13÷54.9) x (44÷32) = .49 bar]
∆P total = 5.5 + 6.9 = 12.4 psi
or
∆P eleme = [.35 + .49 = .84 bar]

SCHROEDER INDUSTRIES 159