Plastic Filler Breathers

The filler breathers from the SPB, SPBN and SES series from STAUFF are lightweight and compact filler filters and tank filler necks with filler breathers made of non-corroding plastic (polyamide). Different variants with cap diameters between 45 and 101 millimetres are available. 

The components are attached either on the top or on the side of hydraulic tanks or other reservoirs. Bracket adapter sets made of polyamide (PA) or aluminium are used for mounting the breather on the side of an oil tank.  

The typical areas of application are in stationary hydraulics and mobile hydraulics. In these cases, the filler breathers are usually placed directly on the hydraulic unit. 

The components are mounted with a thread for screwing in, welded on or as a clamping jaws, bayonet or flange version with six-hole connection as per DIN 24557-2. 

Filler breathers are designed for filling and venting hydraulic tanks. They allow permanent venting of the tanks while protecting against ingress of dirt. This function is ensured with an optionally integrated air filter element (giant air breather).   

Another option is to apply pressure:  

When the liquid level in the tank rises, venting takes place only once the applied pressure has been exceeded. When the liquid level in the tank goes down, venting is ensured at all times. The applied pressure generates a preload in the tank, supporting the intake action of the pump.   

Shorter venting cycles significantly increase the service life and maintenance intervals of the breather and the useful life of the fluid. This process also reduces foaming and cavitation in the tank, providing additional protection against wear and decomposition of the fluid.  

Also available from STAUFF: metal and plastic filler screens, dipsticks in different lengths with integrated splash guard, air filter elements (giant air breathers), connection adapters and adapter sets, and many other accessories.