Flush Bottom Valves
Flush Bottom Valves 1800 Series
SUDE Flush Bottom Valves are specially engineered for complete and residue-free discharge of media from reactors, vessels, tanks, and process equipment. Designed to eliminate dead zones and product accumulation, these valves ensure efficient draining, hygienic operation, and reliable shut-off performance in demanding industrial environments.
Built with robust metallic construction and compatible with pneumatic or electric actuation, Flush Bottom Valves provide smooth operation, corrosion resistance, and long service life. Their compact bottom-mounting design supports gravity discharge, precise dosing, and automated process control across chemical, pharmaceutical, and process industries.
Technical Specifications
Parameter
Valve Type
Flush Bottom Valve
Valve Sizes
DN15 to DN150 (larger sizes on request)
Pressure Rating
As per body design and application requirement
Operation
Pneumatic / Electric / Manual
Mounting
Tank Bottom / Reactor Bottom Installation
Material Options
Carbon Steel, SS304, SS316, SS316L
Sealing Options
PTFE, RPTFE, EPDM
End Connections
Flanged / Welded / Custom Tank Bottom Mounting
Actuation Options:
Single Acting Pneumatic Actuator Double Acting Pneumatic Actuator Electric Actuator – Single Phase / Three Phase
Design & Construction:
Flush bottom mounting design allows direct installation at the lowest point of tanks or reactors, ensuring complete discharge with minimal residue. Precision-machined internal components and corrosion-resistant materials provide reliable sealing, smooth operation, and long operational life.
Working Principle:
Working Principle
The actuator drives the valve stem vertically to open or close the discharge port at the bottom of the vessel.
Open Position
Media flows freely through the flush opening allowing full drainage.
Closed Position
The sealing element presses firmly against the seat, preventing leakage and ensuring safe isolation.
Automation & Control Options:
- Control Modes: On/Off, Modulating (4–20 mA / 0–10 V or via Positioner)
- Actuator Types: Pneumatic (Spring Return / Double Acting), Electric Actuator
- Air Control (Pneumatic): Solenoid Valves (3/2, 5/2), FRL Unit
- Feedback Systems: Limit Switch Box, Position Indicator, Position Transmitter
- Position Control: Pneumatic / Electro-Pneumatic Positioner, PID Controller
Key Features & Advantages
- Complete Tank Drainage – Eliminates dead zones and product accumulation.
- Leak-Free Shut-Off – Precision sealing ensures reliable operation.
- Compact Bottom-Mount Design – Ideal for reactors and vessels.
- Automation Ready – Compatible with pneumatic and electric actuators.
- Corrosion Resistant Construction – Suitable for aggressive chemicals.
- Low Maintenance Design – Simplified servicing and long life.
Optional Accessories:
- Limit Switch Box
- Valve Positioner
- Manual Override
- Air Filter Regulator with Lubricator
- Flow Restrictor & Silencer
Industries Served
Pharmaceutical & Bio-Pharma
Food & Beverage Processing
Dairy Industry
OEM & Skid Manufacturing
Typical Applications:
Reactor bottom discharge, tank emptying, slurry handling, chemical batching systems, hygienic media transfer, and automated process vessel drainage.
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