Pressure limiting valve

Details Pressure limiting valve Pressure limiting valve

F - Mech Eng,Light,Heat,Weapons

16

K

137/65

F16K 17/04 (2006.01) F16K 3/26 (2006.01)

Patent

CA 1243921

ABSTRACT Pressure limiting valves, particularly for hydraulic lining in underground mining and tunnelling secure this lining against overload, the valve body having disposed within it a spring loaded valve piston which, when overloading occurs, allows a large quantity of the pressurised medium to emerge. For this purpose, the underside of the valve spring retainer is of streamlined construction and provided in the valve body are throughflow passages which favour passage of the pressurised medium past the valve spring retainer. Move- ment of the valve spring retainer is confined by an abutment located in the throughflow passages in order to safeguard the valve spring. The O-ring in the groove has a smaller diameter than the radial bores. Thus, assembly is facilitated and it is at the same time ensured that the valve responds to short lengths of travel.

476616

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