SUPRApak Multi-Stack filtration units provide a closed system approach to high capacity depth filtration, maximizing product protection and minimizing product losses. Lower cost of ownership is achieved due to higher throughput, yield improvement, and reduced handling, cleaning, maintenance and downtime costs, when compared to sheet filtration.

SUPRApak Multi-Stack technology is ideal for use in high volume beer, sweetener, enzyme, gelatin, yeast extract, and other food and beverage applications.

SUPRApak Multi-Stack Series-WA units hold from 16 to 24 SUPRApak L modules, representing up to approximately 240 m² (2583 ft²) of filtration area in a very compact and low hold-up volume design. They are available in single dome design.

Minimum/Maximum Design Pressure1, 2		Liquids and Gases: -1 to 6 barg (-14.5 to 87 psig)
Minimum/Maximum Operating Temperature1		-10 to 150 °C (14 to 302 °F)
Materials of Construction		Wetted parts 1.4404 (AISI 316L stainless steel)
Sealing Materials3		EPDM elastomer
Internal Surface Finish	Housing	≤ 0.8 micrometers Ra (≤ 32 Ra microinches), electropolished
	Piping	≤ 0.8 micrometers Ra (≤ 32 Ra microinches)
Internal Welds	Housing	Dressed and blended to provide uniform ripple- and crevice-free surface to ≤ 0.8 micrometers Ra (≤ 32 Ra microinches), electropolished
	Piping	Weld finish is as welded, with a uniform, crevice-free profile. ≤ 1.6 micrometers Ra (≤ 63 Ra microinches), pickled and passivated or bright annealed
Connections	Inlet/Outlet	DN 100 (DIN 11851) 4 inch ISO 2852 clamp coupling compatible adaptors available by specific order
	Filtrate Vent	4 x DN 10 (DIN 11851)
Filter Module Compatibility4		SUPRApak L series modules

¹ Maximum design pressure and temperature ratings are vessel ratings only. Safe operation will also depend on filter module and housing gasket use. EPDM assembly seals restrict continuous operating temperature to 130 ºC (266 ºF). For details on module temperature limitations, please refer to SUPRApak module literature.
² Design satisfies EC Pressure Equipment Directive (PED) 97/23/EC (Fluid Group 1, Category IV, Module G). Pressure rating is suitable for hazardous liquids or gases.
³ Seal materials meet requirements for food contact use as detailed in FDA 21 CFR Section 177.2600, and EC Regulation 1935/2004, including BfR XV and XXI. Please contact Pall for additional options.
⁴ Refer to Pall Food and Beverage SUPRApak module literature for additional guidelines on use.

SUPRApak Multi-Stack Series-WA housings are supplied without accessories.

Nominal Dimensions in mm (inches)

For specific dimensions, please contact Pall⁵.

	MS-400	MS-500	MS-600
A	3500 (137.8)	4000 (157.5)	4500 (177.2)
B	2140 (84.3)	2393 (94.2)	2646 (104.2)
C6	844 (33.2)	844 (33.2)	844 (33.2)
D6	500 (19.7)	500 (19.7)	500 (19.7)
E7	154 (6.1)	154 (6.1)	154 (6.1)
F6,7	750 (29.5)	750 (29.5)	750 (29.5)
G	1050 (41.3)	1050 (41.3)	1050 (41.3)

⁵ Pall Corporation reserves the right to make dimensional modifications at any time, maintaining the same fit, form, and function. Please request a general arrangement drawing if exact dimensions are required.
⁶ Adjustable (leg height adjustment)
⁷ Indicated dimensions are for installations requiring DIN connections. For installations requiring clamp coupling connections, optional DIN to clamp coupling adaptors are additionally available.

Volume and Weight

	MS-400	MS-500	MS-600
Volume L (US gal)	1035 (273)	1250 (330)	1465 (387)
Weight kg (lbs)	740 (1631)	770 (1698)	800 (1764)

Standard Documentation⁸

• Certificate of Conformity to Quality Standards
• Final Inspection Certificate
• Installation/Operating Manual (IOM)

⁸ Additional documentation packages can be ordered.

Dimensional information, WA-Series Housing



Dimensional information, piping DIN to clamp coupling adaptors, in mm (inches)

Housings, Vessels, or Assemblies

This is a guide to the part numbering structure and possible options only. For availability of specific options, please contact Pall.

Part Number: SPMS WA [1]

Example Part Number: SPMS WA 400

Note: See bold reference code in the table.

Table 1

Code	Bowl Height and Configuration	Number of SUPRApak Modules
400	4-High Bowl	16
500	5-High Bowl	20
600	6-High Bowl	24

Optional Accessories

Part No.	Description	Details
25590-02269	Hot Fluid Core	1.4404 (AISI 316L SS)
25590-0226-019	Hot Fluid Core Extension Z1	1.4404 (AISI 316L SS)
25590-0226-029	Hot Fluid Core Extension Z2	1.4404 (AISI 316L SS)
ACS1036AA	Hook Spanner DN 10-20	Tool
ACS1037AA	Hook Spanner DN 25-100	Tool
20040118-34	3-4 High Lifting Device (incl. Stand)	Supplied with spacer
20040118-56	5-6 High Lifting Device (incl. Stand)	Supplied with spacer
ACS1072GS	InletAdaptor DN 100 – 4 inch clamp coupling)	Elbow adaptor for piping adaption from DN to ISO 2852 clamp coupling connection
ACS1067GS	Outlet Adaptor (DN 100 – 4 inch clamp coupling)	Straight piece adaptor for piping adaption from DN to ISO 2852 clamp coupling connection

9 For hot fluid filtration (>40 °C/ >104 °F) select Hot Fluid Core for the top module in the stack and add Hot Fluid Core Extension Z1 (1-high section) and/or Hot Fluid Core Extension Z2 (2-high section) as required.

Lifting device enables insertion and removal of the entire stack of modules. Spacer pictured at the bottom enables lowering module stack onto a suitable raised surface.


Hooks on the lifting device grab the bottom of the SUPRApak module stack for easy handling.


Different bowl heights offer flexibility.

Spare Parts

Part No.	Description	Details
ACS1057EM	Housing O-Ring	EPDM
ACS1070AA	Torque Unit	Torque unit with filtrate vent
ACS1041AA	Torque Unit Rod Seal	EPDM
ACS1043AA	Torque Unit Guide Bush	Torque unit spare part
ACS1071JM	Torque Unit Clamp Nut	Torque unit spare part
ACS1064EM	DN 100 Seal	EPDM

The torque unit is an external tensioning device, which provides reliable and secure operation without bypass. The filtrate vent, mounted on the torque unit, enables release of air from the filtrate inside the module core.