2V701 Series Size range: 1” – 16” ANSI Class 150 – 600 Class 1500 & 2500 also availableBody Materials: CS, SS, CMEnd Connection: Flanged (retains seat ring)Trim17-4PH and 316SS availableChrome-Iron for severe servicesAs hard as tool steel, HRC 53 (min.)
3V701 Design Designed for erosive services Slurries: Alumina BauxiteFlashing services: power plants prior to anti-cavitation trimsExpanded body reduces fluid velocity by 50%Large diameter stem and long guide engagement
4Venturi Seat Flow over design Venturi seat reduces outlet velocity as it enters downstream pipe or vessel.Often connected directly to vessel or sacrificial pipe.Reduced trim is standardFull may be available
6Actuator SelectionFlow over and high seat load require stiff high thrust actuators.Perfect application for REXAHistorically usedPnuematic pistons (Conoflow)Hydraulic pistons (Ortman)Rotomotor (Hammel Dahl)Some small units have used S/D
7Rotomotor All pneumatic Heavy duty Gear driven Integral positioner High thrust / torqueLong strokeOnce state of the artnow long obsolete
8Rotomotor Operation Pneumatic positioning system 4-way pilot valve Reversible air driven motorGear drive
10Bayer Process To turn bauxite into alumina; Grind the ore & mix it with lime and caustic sodaPump mix into high-pressure containers & heatThe aluminum oxide is dissolved by the caustic soda, then precipitated out of this solution, washed, and heated to drive off water.What’s left is the white powder called alumina, which is transformed into aluminum metal in the smelting process.