M U L T I - B A S K E T S T R A I N E R S A N D M U L T I - B A G F I L T E R S

Multi-Basket Strainersand Multi-Bag Filters

These multi-basket strainers and bag filtersoffer a wide range of flow capacities andcontaminant-holding capabilities. Theycontain from 2 to 23 baskets.

To serve as a strainer, a unit is ordered withperforated stainless steel baskets (mesh-lined ifdesired). When ordered as a filter, it’s fitted withperforated stainless steel baskets designed tohold disposable or cleanable filter bags.Industry-standard size bags are used: thestandard 30 inch baskets accept bag size 2,the optional 15 inch baskets take size 1.

The standard pressure rating for all models is150 psi. All housings can be supplied with anASME code stamp, if required.

Features• Multiple housing styles available (standard,

quick access, low profile, hinged)• Permanently piped housings are

opened without tools and withoutdisturbing the piping

• Machined cover gasket grooveprovides positive O-ring sealing

• Carbon steel, 304 or 316 stainlesssteel construction housings

• Large-area, 30 inch deep, heavy-duty,9/64 inch perforated baskets

• Easy to clean• Low pressure drop• Four cover seal materials: Buna N,

Ethylene Propylene, Viton®, and Teflon®

• Pressure rating 150 psi• Flanged connections for 2

through 12 inch pipe• Vent, drain and gage connections

Options• ASME code stamp• Higher pressure ratings• Corrosion allowances• Steam jackets• Special connection locations

36

• Bag hold down assembly (standardon QAC design)

• Inner baskets for dual-stage strainingor filtering

• Cleanable wire mesh lined or perforatedstrainer baskets

• Special alloy materials• Hydraulic cover lifting assembly• Sanitary fittings• Differential pressure indicators

Duplex SystemsAll multi-basket models described here are alsoavailable as duplex systems. Two units comepiped together with valves to permit continuoususe of either unit while servicing the other. Onelever actuates all valves simultaneously or it canbe ordered for automatic service. See page 63.

M U L T I - B A S K E T S T R A I N E R S A N D M U L T I - B A G F I L T E R S

COUNTERBALANCEDCOVER - Stops In

Any Position

COVER HINGEMECHANISM

CLAMPRELEASE BAR

COVER SUPPORTYASSEMBL

PRIMARY RELEASESAFETY LEVER

LOW PROFILECLEARANCE

INLET

INLETDRAIN/VENT

OUTLET

SECONDARYSAFETY RELEASE

COVER SEAL

POSITIVE BAGRESTRAINT

DRAIN

Rosedale Quick Access "QAC" Low MaintenanceFilter/Strainer

Rosedale Quick Access "QAC" Low MaintenanceFilter/Strainer

37

M U L T I - B A S K E T S T R A I N E R S A N D M U L T I - B A G F I L T E R S

Choose BasketsThat Strain or FilterWhatever your needs dictate

Strainer baskets are cleanable, reusable.

A seal is supplied on any strainer basket.It forms a seal between basket and housingto prevent dirty fluid bypass. Choose betweenvarious perforation sizes or wire mesh. Strainerbaskets have flat, non-perforated bottomsand contain heavy-duty handles.

38

Filter bag baskets hold disposable filter bags.

Filter bags have an interference fit between thebags top rim and the housing causing a positiveseal to prevent fluid bypass. Filter bag basketshave flat perforated bottoms.

Filter bags are available in a wide variety offelt, micro-fiber, monofilament and multifilamentmesh materials. They are detailed completely onpages 126-128.

DUAL-STAGE– Dual-stage action willincrease strainer or filter life and reduceservicing needs. This straining/filteringaction can be achieved byordering a second, inner basket.It is supported on the top flangeof the outer basket. Bothbaskets can be utilized asstrainers (with or withoutwire mesh linings), filter bagbaskets, or a combination ofstrainer and bag basket.

Basket DataSurface area of each 30 in. basket: 4.4sq. ft. Volume of each 30 in. basket:0.6 cu. ft.

Basket ConstructionFor cleanable strainer baskets, choose fromthe following perforation diameters: 1/4,3/16, 9/64, 3/32, or 1/16 inch (for othernot shown consult factory).

Any perforated basket can also beordered lined with wire mesh. Stainless steelwire is used in mesh sizes 20, 30, 40, 50, 60,70, 80, 100, 150, or 200.

Filter bag baskets, have standard 9/64 inchdiameter perforations that are 51% open area.A wire mesh can also be utilized with bagbaskets for two advantages:

1. Fiber migration is minimized.2. In the unlikely event of bag rupture, the wire mesh better contains the contaminant.

M U L T I - B A S K E T S T R A I N E R S A N D M U L T I - B A G F I L T E R S

Choose Housing StyleDesigned to suit your requirements

The versatility of Rosedale Products providesa choice of several different designs.

• Quick Access Cover (QAC) features aclamp and spring assisted hinged coverthat is quick and easy to open andclose with no tools required. This willsignificantly reduce change-out time andlower operating costs. The QAC is ratedto 150 PSI and constructed to meet ASMEcode requirements. Built-in safety featuresensure that the cover cannot be openedunless the internal pressure is first released.The QAC is offered with our low profiledesign making bags more accessible andeasy to remove.

• Low Profile Design (SLP) Housingsare compact and space saving, allowingfor ease of bag change-out. Standardoperating height is reduced, resulting ina safe design by eliminating platformsand ladders. The SLP is manufacturedin any housing version, including ourstandard davit arm cover, QAC design,and spring assisted hinged cover.

• Spring Assisted Hinged Cover (HLP)opens and closes without effort. Simplyloosen the swing bolts and lift thecover up to open. An automatic coverstop is provided. This design savestime by eliminating the labor intensivehandwheel. It is offered standard withour low profile design, or can be orderedin the QAC design.

• Standard Housing Design (STD)is durable and economic. It includes adavit arm and handwheel to facilitatecover removal. It is our most versatilehousing design offering a variety ofoptions, including our low profile design.

39

Quick Access Cover

Low Profile Design

Standard Davit Arm

M U L T I - B A S K E T S T R A I N E R S A N D M U L T I - B A G F I L T E R S

40

A

INLET OUTLET

F Typ.

B B1 NPTDRAIN

D

E

G Typ.

C

PIPESIZE

≤2 3≥4

PORTSNPT1/2 3/41

(4) 7/8 DIA. HOLES

A

INLETOUTLET

PIPESIZE

≤2 3≥4

PORTSNPT1/2 3/41

J Typ.

K

B

B

1 NPTDRAIN

H

I

L Typ.

C

1/2" NPT VENT1/2" NPT VENT

(4) 7/8 DIA. HOLES

MODELNUMBER& Dim. A

16

18

22

24

30

36

42

48

PipeSizes

B

23423423462346234683468

10468

1012468

1012

Leg BoltCircleDia.

14.0

16.0

20.0

22.0

28.0

34.0

40.0

46.0

C

10.9

11.9

14.0

15.0

18.0

21.0

24.0

27.0

D

40.142.544.940.542.945.341.443.946.250.441.744.146.550.742.845.247.651.956.446.448.853.157.662.150.054.358.863.368.051.055.460.064.469.2

H

37.938.3N/A39.640.0N/A39.540.039.5N/A41.241.641.1N/A41.341.841.341.2N/A43.343.243.243.2N/A45.945.945.945.8N/A46.546.446.446.4N/A

I

54.955.3N/A58.558.9N/A58.058.558.0N/A61.662.061.5N/A61.962.461.961.8N/A64.564.564.464.4N/A70.770.670.670.5N/A71.571.471.471.4N/A

J

8.009.00N/A8.009.00N/A8.009.009.00N/A8.009.009.00N/A8.009.009.0010.0N/A9.009.5010.511.5N/A9.5010.511.512.5N/A9.5010.511.512.5N/A

L

13.014.0N/A14.015.0N/A16.017.018.0N/A17.018.019.0N/A20.521.022.523.0N/A24.025.026.027.0 N/A28.028.029.530.0N/A32.032.032.533.0N/A

K

15.017.0N/A15.017.0N/A15.017.019.0N/A15.017.019.0N/A15.017.019.017.0N/A17.019.017.017.0N/A19.017.017.017.0N/A19.017.017.017.0N/A

E

57.159.561.958.060.462.860.062.464.769.060.763.165.569.763.365.768.172.476.868.470.875.179.684.173.577.882.386.891.576.080.485.089.494.2

F

4.505.256.004.505.256.004.505.256.007.004.505.256.007.004.505.256.007.008.255.256.007.008.259.506.007.008.259.5011.06.007.008.259.5011.0

G

10.512.314.011.112.914.611.913.715.418.913.114.816.620.115.217.018.722.225.718.820.624.127.630.622.626.129.632.636.124.828.331.834.838.3

Weight, lb(Approx)

400425450450475500485500515560675700725750635650665705850840860870

101011501840187019602070220020152075220023502530

Standard Low Profile

Dimensions (IN)

(30-inch deep basket)

Standard Low Profile

M U L T I - B A S K E T S T R A I N E R S A N D M U L T I - B A G F I L T E R S

Pressure Drop DataBasket strainers and bag filters are usually selectedso that the pressure drop does not exceed 2 psi,when they are clean. Higher pressure drops maybe tolerated when contaminant loading is low.

Determining housing pressure drop:The pressure drops shown on the graph are reliablefor all multi-basket housings, including strainer basketsor bag filter (perforated only or mesh lined). Thepressure drop of any housing is governed by thesize of the inlet and outlet, not the vessel itself.1. Using the desired pipe size and approximate

flow rate, determine the basic pressure dropfrom the graph.

2. Multiply the pressure drop obtained in step 1by the viscosity correction factor found in theaccompanying table.

3. You now have the pressure drop for a clean multi-basket unit. If bag filters are to be employed, youmust add the pressure drop they incur to get a truepressure drop for the assembly.

Note: Filter bags are specified separately. See pages 120-130.

500 1000 1500 2000 2500 3000 3500 4000

2

4

6

8

10

12

FLOW, GPM

PR

ES

SU

RE

DR

OP

( P

), P

SI

2-in

ch P

IPE

3-in

ch P

IPE

4-in

ch P

IPE

6-in

ch P

IPE

8-in

ch P

IPE

10-inch PIPE

12-inch PIPE

CPS NUMBER 1 50 100 200 400 600 800 1000 2000(H

20)

.65 .85 1.00 1.10 1.20 1.40 1.50 1.60 1.80

Viscosity Factors

41

MODELNUMBER

16 & 18

22 & 24

PipeSizes

B

23

234

Leg BoltCircleDia.

16.0

22.0

C

37.638.1

41.241.641.1

A

18

24

D

45.445.9

49.950.349.8

E

8.009.00

8.009.009.00

F

14.015.0

17.018.019.0

G

15.017.0

15.017.019.0

A

E

G

B

B

C

D

INLET OUTLET

F (4) 7/8" DIA. HOLES

1" VENT VALVE

1/2" NPT PORT

1 NPTDRAIN

PIPESIZE

≤2 3≥4

PORTSNPT1/2 3/41

QAC Low Profile

QAC Low Profile

Model Selection (For all housings)

Model Number Straining, Nominal Inlet/ AvailableNo. of Filtering Flow Rate Outlet Housing

Baskets Area, ft2 (gpm)** Size (in) Styles

16 2 8.8 200 2,3,4* Std,SLP,HLP,QAC18 3 13.2 300 2,3,4* Std,SLP,HLP,QAC22 4 17.6 400 2,3,4,6* Std,SLP,HLP,QAC24 6 26.4 600 2,3,4,6* Std,SLP,HLP,QAC30 8 35.2 800 2,3,4,6,8* Std,SLP,HLP36 12 52.8 1200 2,3,4,6,8,10* Std,SLP,HLP42 17 74.8 1700 2,3,4,6,8,10,12* Std,SLP,HLP48 23 101.2 2300 2,3,4,6,8,10,12* Std,SLP,HLP

*Not available on SLP, HLP, and QAC styles.

**Nominal flow rate is based on water @ 1 psi ∆P. For optimum filtering effectiveness, a maximum fluid velocity of 10 ft/sec should be maintained.

Recommended flow rates are based onhousing only. Fluid viscosity, filter bagused, and expected dirt load should beconsidered when sizing a filter.

Dimensions (IN)

M U L T I - B A S K E T S T R A I N E R S A N D M U L T I - B A G F I L T E R S

PIPE SIZE (FLANGED1)2-in. (Std,SLP,HLP16-48 / QAC 18 & 24) = 2F3-in.(Std, SLP, HLP 16-48 / QAC 18 & 24) = 3F4-in. (Std 16-48 / SLP, HLP 22-48 / QAC 24) = 4F6-in. (Std 22-48 / SLP, HLP 30-48) = 6F8-in. (Std 30-48 / SLP, HLP 36-48) = 8F10-in. (Std 36-48 / SLP, HLP 42 & 48) = 10F12-in. (Std 42, 48) = 12F

BASKET DEPTH15-in. = 1530-in. (std) = 30

30 = 3036 = 3642 = 42

OPTIONAL INNERBASKET, MEDIA SIZEPerforation diameters (for type 2Pbaskets)1/4, 3/16, 9/64, 3/32, 1/16Mesh sizes (for type 2M & 2BMbaskets)20, 30, 40, 50, 60, 70, 80,100, 150, or 200

Example: SLP-24-30-4F -1-150-C- B -S -M-20- C- 2P 1/16

PRESSURE RATING2

150 psi (flanged) = 150

OUTLET STYLEIn-line, bottom (std) = 1Side inlet/outlet (SLP, HLP, QAC) = 2Side inlet/outlet, same side (SLP, HLP, QAC) = 4

OPTIONAL INNERBASKET, TYPE2B = Filter bag basket,

9/64 perforations2P = Strainer basket,

perforated metal2BM = Filter basket, mesh

lined2M = Strainer basket,

perforated, mesh lined

ASME CODE STAMPC = Code

BASKET, MEDIA SIZE Nosymbol if type B basket wasselectedPerforation diameters (for type Pbaskets)1/4, 3/16, 9/64, 3/32, 1/16Mesh sizes (for type M & BMbaskets)20, 30, 40, 50, 60, 70, 80,100, 150, or 200

OPTIONALINNER

BASKET

42

COVER SEALBuna N = BEthylene Propylene = EViton® = VTeflon® Encapsulated Viton® = TEVTeflon® (solid white) = TSW

How To OrderBuild an ordering code as shown in the example

Options

MODEL NO.16 = 1618 = 1822 = 2224 = 24 48 = 48

HOUSING MATERIALCarbon steel = C304 stainless steel = S316 stainless steel = S316 BASKET, TYPE

PB = Filter bag basket,9/64 perforations

P = Strainer basket,perforated metal

BM = Filter bag basket,perforated, meshlined

M = Strainer basket,perforated, meshlined

HWM = Filter bag basket,heavy wire mesh

BASKET SEALNo seal = NSeal (only on strainer housings) = S

HOUSING STYLEStandard (std) = No SymbolStandard Low Profile = SLPQuick Access Cover (16-24) = QACHinged Low Profile = HLP

Housings

*

1. Flanges provided with the housing match the pressure rating of the vessel.Housings rated 150 psi have 150 class flanges. Housings rated 300 psihave 300 class flanges. Other styles and classes available. ANSI B16.5Pressure-Temperature rating tables determine flange class for ASME codehousings. Consult factory.

2. Higher pressure ratings available. Consult factory.

*Note: The TEV and TSW cover seals are not available on the low profile QAC.