Flush Bottom Outlet Disc Valves – invented by SchuF
SchuF is the inventor (in 1923) of the Disc Drain Valve (Bottom Outlet Valve – BOV). These valves are ideal for draining tanks, reactors or pipelines containing non-viscous media. They are widely used in the Petrochemical, Pharmaceutical, Fine Chemicals, Biochemical, and mineral refining industries.
- Flush-Mounted Valves – Draining/Injection/Sampling
- Drain & Sampling valve sheet
- Valves for the Pharmaceutical and Fine Chemical Industries
- Sterile flush Valves
- Disc Rising BOV with Metal Bellows Seal Sheet
Disc Valve Model Numbers
Disc Valve applications – as Drain Valves or Feeding Valves
Disc Valves are most commonly used for dead space free draining and feeding of vessels, reactors and pipelines. They are especially suited to low-viscosity materials, or where slower vessel drainage is unproblematic.
The shorter stroke results in smaller, lighter and faster actuators, saving cost and weight. The disc rising valve is normally a flow to close design, aiding sealing performance.
The disc lowering valve Model 24 can be used on vessels with agitators as it is non-intrusive. They are also widely used for driers, mixers, and filters.
Disc Bottom Outlet Valve
Disc Drain Valve with PTFE seat
Key Characteristics of SchuF Disc Drain Valves
- Available as a disc lowering or disc raising valve
- Designed to allow complete draining of the vessel and valve
- No deadspace, no sharp corners or edges
- No leakage to atmosphere options (with stuffing box, metal/PTFE bellow or diaphragm seal to atmosphere)
- Zero contamination features – Sterile valve also available
- All valves have a positive seal
- Cleaning in service through flushing port(s)
“Made to fit” –
Disc valve combined
Disc Drain Valve Options
- Automatic Crust Breaking with Disc Rising versions
- Available in a fire-safe version with certification to BS 6755 Pt.2 (ISO 10497)
- Can be combined with a wafer type sampling valve
- Temperature sensors are possible through the valve
- GMP (Good Manufactoring Practice) and CIP (Clean In Place) conformant
Sizing of Disc Valves and Material Choice
Depending on application, sizes range from one inch to six inch and larger on request. Please see attached PDF files for more detailed dimension information.
Disc Valves are available in all materials including cast-steel, stainless steel, all nickel based alloys, titanium, zirconium and others. They can also be PTFE and glass lined.