We assemble this filter to customize the inlet and outlet, and integrate a 300b bleed valve, much practical and fine as classic 200b, more, you won't lose the screw with this one ;-). 

Furthermore, the check valve is not optional, the reason is simple: by purging upstream the filter, you generate a reverse gas flow in the high area of the cartridge, which is totally not recommended by the manufacturer and make random the cartridge's life. 

The filter consists of: 

• Inlet female M26, 
• Filter with cartridge, 
• Non-return valve, 
• 300b bleeding valve, 
• Outlet male M26. 

For use only with our 0520 replacement cartridge. 

Cartridge life is around 50 x 12L fills assuming air is already pre filtered correctly. 

You can have personal inlet and outlet fittings, do not hesitate to request.