Patent ID: 8807165
Filing Date: 2014-08-19
Classification: F16K,Y10T

Abstract:
1. Control valve ( 1 ), in particular angle control valve and double control valve, also as a seat valve and angle seat valve, for extreme control applications with erosive and corrosive media at temperatures of over 500° C. and pressure drops of over 100 bar, preferably for draining or down-regulating for high-pressure hot separators, medium-pressure hot separators and vacuum distillation columns, in particular for hydrogenation, and particularly for coal liquefaction, essentially with a valve housing, an inlet funnel ( 3 ), an outlet funnel ( 8 ) lined with tungsten-carbide, valve seats ( 6 , 7 ) arranged between them, and a valve piston ( 12 ) provided with a control valve head ( 13 ), whereby the valve seats ( 6 , 7 ) and the valve head ( 13 ) consist of solid tungsten carbide, characterised in that the valve piston ( the valve head ( centred in the transition from the inlet funnel ( the valve housing, the valve seat ( one or several pressure reduction levels ( the lining ( at the end of the valve seat ( wherein the hollow inner part of the cup-shaped valve head ( 13 ) is designed conically with the same angle as the expansion of the valve seat ( 6 ).