Sanitary Stainless Steel Precision Filters – Single & Multiple Elements

Sanitary-grade stainless steel precision filters are filtration equipment specifically designed for industries such as food, pharmaceuticals, biotechnology, and medical, aiming to ensure hygiene and safety in fluid processing. The design and material selection of the filter's internal filter element will comply with hygiene requirements, ensuring the sanitary performance and long-term stability of the filter while capturing and separating suspended matter, microorganisms, particles, and pollutants.

Specification
Working Principle
Structure
Videos

Specification

Single Element Type
Multi-element Type

Single Element Type

A single element sanitary stainless steel precision filter.

Material: SUS304, SUS316L
Maximum Working Pressure: 150 PSI
Filtration accuracy: 1–100 µm
Cartridge Quantity: 1 element
Sealing type: O-ring and flat gasket
Sealing material: Nitrile rubber, silicone rubber, fluororubber, usually silicone rubber is used
Filter interface: Thread, clamp, DIN, ANSI, JIS standard flange
Surface treatment: Polishing

Drawings & Dimensions

A drawing of single element sanitary stainless steel precision filter.

Table 1: Single Element Sanitary Stainless Steel Precision Filter Specification
Model	Structure	A (mm)	B (mm)	C (mm)	D (mm)	F (mm)	In/Out
SW-SF-1RS05	1 nos × 5"	105	165	560	ɸ102	185	1"
SW-SF-1RS1	1 nos × 10"	105	165	560	ɸ102	185	1/2" – 1"
SW-SF-1RS2	1 nos × 20"	105	165	810	ɸ102	185	1/2" – 1"
SW-SF-1RS3	1 nos × 30"	105	165	1060	ɸ102	185	1/2" – 1"
SW-SF-1RS4	1 nos × 40"	105	165	1310	ɸ102	185	1"

Multi-Element Type

A multi-element sanitary stainless steel precision filter.

Material: SUS304, SUS316L
Maximum Working Pressure: 150 PSI
Filtration accuracy: 1–100 µm
Cartridge Quantity: 3/6/8/10/12/16/20 elements,etc.
Sealing type: O-ring and flat gasket
Sealing material: Nitrile rubber, silicone rubber, fluororubber, usually silicone rubber is used
Filter interface: Thread, clamp, DIN, ANSI, JIS standard flange
Surface treatment: Polishing

Drawings & Dimensions

A drawing of multi-element sanitary stainless steel precision filter.

Table 2: Multi-Element Sanitary Stainless Steel Precision Filter Specification
Model	Structure	A (mm)	B (mm)	C (mm)	D (mm)	F (mm)	In/Out
SW-SF-3RS1	3 nos × 10"	100	160	655	ɸ200	290	1"
SW-SF-3RS2	3 nos × 20"	100	160	905	ɸ200	290	1"
SW-SF-3RS3	3 nos × 30"	100	180	1160	ɸ200	300	1"
SW-SF-3RS4	3 nos × 40"	100	160	1155	ɸ200	290	1"
SW-SF-6RS1	6 nos × 10"	100	215	610	ɸ250	326	1.5"
SW-SF-6RS2	6 nos × 20"	100	215	860	ɸ250	326	1.5"
SW-SF-6RS3	6 nos × 30"	100	250	1110	ɸ250	400	1-1/2"
SW-SF-6RS4	6 nos × 40"	100	215	1360	ɸ250	326	1.5"
SW-SF-8RS3	8 nos × 30"	100	265	1175	ɸ300	440	2"
SW-SF-10RS3	10 nos × 30"	100	265	1175	ɸ300	440	2"
SW-SF-10RS4	10 nos × 40"	100	235	1390	ɸ300	376	2"
SW-SF-12RS3	12 nos × 30"	120	330	1240	ɸ350	490	3"
SW-SF-15RS3	15 nos × 30"	120	285	1225	ɸ350	470	2.5"
SW-SF-15RS4	15 nos × 40"	120	285	1475	ɸ350	470	2.5"
SW-SF-16RS3	16 nos × 30"	120	350	1260	ɸ400	540	3"
SW-SF-18RS3	18 nos × 30"	120	285	1240	ɸ400	520	3"
SW-SF-18RS4	18 nos × 40"	120	285	1490	ɸ400	520	3"
SW-SF-20RS3	20 nos × 30"	120	360	1270	ɸ450	590	3"
SW-SF-20RS4	20 nos × 40"	120	285	1490	ɸ450	520	3"
SW-SF-22RS3	22 nos × 30"	150	315	1280	ɸ500	570	3"
SW-SF-22RS4	22 nos × 40"	150	315	1530	ɸ500	570	3"

Working Principle

Sanitary-grade stainless steel precision filters can accommodate one or multiple filter cartridges based on the flow rate. The liquid to be filtered enters the interior of the filter from the inlet. Under the pressure difference between the inlet and outlet of the filter, the liquid enters the outer layer of the filter cartridge, trapping larger particles, while smaller particles are captured in the inner layer of the filter cartridge. The filtered clean water that meets sanitary requirements flows out of the filter through the outlet.

Structure

Pressure gauge: Monitor the internal pressure and the pressure difference between the inlet and outlet of the filter, indicating whether the filter element needs to be cleaned or replaced.
Cap: Ensure the isolation between the internal and external environment of the filter, prevent contaminants from entering the filter, and provide necessary strength and rigidity for the overall structure.
Center support rod (multi-element filter): Used in conjunction with the positioning ring to provide necessary support for the filter element and help position the filter element.
Filter element: Filters and separates solid particles, impurities, pollutants, or other suspended substances in the fluid.
O-ring: Ensure the sealing effect between the cap and the filter base, preventing contamination of the filtrate during the filtration process.
Base: Provides stable support for the entire filter, ensuring the overall integrity and stability of the filter during operation.
Quick-connect fitting: Used for the connection between the cap and the filter base, the fitting must meet specific cleanliness and hygiene standards to prevent liquid contamination and bacterial accumulation.