The SchuF Group - Angle Blow Down Valves, such as this one are manufactured and supplied by SchuF India. This specific valve was supplied to CB & I in the USA. SchuF
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Vanne de fond de cuve à piston - SchuF | Armour Valve
SchuF Armaturen und Appararebau - Energy, Oil & Gas magazine
Used Schuf Usa Valve | HGR Industrial Surplus
Vanne de régulation angulaire pour service sévère SchuF | Armour Valve