As the core component of the filtration system, the design and selection of the Connection Adaptor&End Cap of the filter cartridge are crucial for the filtration effect and the stable operation of the system. This article will provide you with the detailed introduction to the knowledge of filter cartridge caps, helping you better understand and select the appropriate filter cartridge caps. Common types of Connection Adaptor & End cap for filter cartridge:
Range of Use | Characteristics | |
Flat End Cap | Usually used for some small or single-core filters | It is easy to install, but its sealing performance is slightly worse than that of the Fin End Cap |
Fin End Cap | usually used in large or multi-core filter | High sealing performance |
Figure 1: Flat End Cap & Fin End Cap
The following are the End Cap forms and parameters of common filter cartridge end cap of different models (end caps such as 226,222,215, etc. are from ISO 3601-1-2012* See Figure 2):
End Cap | Type | Diameter | Size | Application Scenario | Sealing performance/ connection characteristics |
Insertable type | 33.7-34.3 mm (Containing a sealing ring) | Smaller in size | Compact filter design | Suitable for small filter cartridge | |
222 | Insertable type | 45.2-45.6 mm (Containing a sealing ring) | Bigger than 215 | Various standard-sized filter | Universal design for multi-core filter |
226 | Snap-in | 57.8-58.4 mm (Containing a sealing ring) | Bigger than 222 | Pharmaceutical, food and other industrial filtration | Good sealing |
M20 | External thread | OD 20mm | Standard | Filters that require tightness and connection stability | Threaded connection, medium tightness |
M30 | External thread | OD 30mm | Bigger than M20 | High pressure, high temperature filtration environment | High sealing performance, higher connection strength |
Note*: ISO 3601-1-2012 is a technical standard developed by ISO for O-rings in fluid power systems. The size of the filter element interface is generally set based on the O-ring.
Figure 2：ISO 3601-1-2012
Figure 3: Common Connection Adaptor & End cap
In practical applications, the selection and use of filter cartridge should follow the manufacturer's recommendations and industry standards to ensure the effectiveness and safety of the filtration system. Selecting the right Connection Adaptor & End cap is essential to ensure the effectiveness and reliability of the filtration system.
