FLUSH BOTTOM VALVES


 

FLUSH BOTTOM VALVES

Inside Tank Open, Inside Valve Open Type

Piston Type, Rising / Non Rising Stem

 The valve body can be flanged to bolt to a facing fabricated into the tank. Alternatively, the valve body can be shaped and weld prepared, or weld prepped, for butt welding into the shell. The most popular valve types are piston type sample valves. Care must  be taken because of the very close clearances between the piston and the body. The valve has an extremely poor tolerance to pipe strain and imposed forces and moments and so the design of the outlet pipe is critical.                             

The standard valve   manufactured in AISI 316L to ASME VIII Division 1 requirements. Full material traceability is maintained. The valve body is designed for direct fabrication into the tank bottom. Sizes cover DN15 to DN100 outlets.A flush tank valve is used to drain tanks completely in those situations where it is not feasible to shape the tank bottom to include a gravity drain point.

  Most tanks can have a sloped bottom so that all sludge/sediment and product can be drained. Tanks of this type have dead volumes which cannot be stirred and product cannot be circulated. These operating restrictions make this style of tank construction unsuitable for hygienic and biotechnology applications. Equipment must be designed to allow all product to circulate freely and pockets, where the consistency may vary from the bulk, must be eliminated. Flush tank valves are designed to be fabricated into torispherical dished ends or circular shells. The complete contents of the tank can be drained without inhibiting the internal flow patterns.                   

SAFETY / PRESSURE RELIEF VALVES  THERMAL RELIEF VALVE    ATMOSPHERIC RELIEF VALVE   PRESSURE REDUCING VALVES / STATION   PRESSURE CUM VACUUM RELIEF VALVES  BREATHER VALVES   EXCESS FLOW CHECK VALVES   EXCESS FLOW  SHUT  OFF VALVES   UNDERGROUND SAFETY VALVES FOR WATER TANK /  WATER FLOW CANAL AS PER BS – 4558 : 1983 NON – RETURN VALVES  BALL VALVES DIAPHRAGM VALVES  NEEDLE  VALVES / MANIFOLDS/ THROTTLING VALVES