+91 90336 30547 latascientific@gmail.com
ISO-aligned QC · Borosilicate 3.3 · Pan India supply network
Bottom Outlet Valve
Glass Valves

Bottom Outlet Valve

Glass bottom outlet valve, DN 40 and DN 50

Borosilicate glass bottom outlet valve that prevents solids or liquid accumulating in a vessel's bottom outlet — for spherical or cylindrical vessels, DN 40 and DN 50.

Request a quotation Full technical data and dimensions Request the datasheet
At a glance
Product typeGlass bottom outlet valve
MaterialBorosilicate 3.3
SpindlePTFE
Nominal bore rangeDN 40 and DN 50 vessel connection
End connectionBeaded glass ends with backing flanges and PTFE-envelope gaskets
Flange drillingSee the drilling table — BS 10 Table E, BS 10 Table F and ASA drilling available
Pressure ratingNot published on the valve catalogue page — confirm with us for your duty
Temperature ratingNot published on the valve catalogue page — confirm with us for your duty

Product overview

What it does, and where it fits.

The catalogue is explicit about what this valve is for: it prevents the accumulation of solid or liquid in the bottom outlet of a vessel, and it can be incorporated in any spherical or cylindrical vessel.

That is the problem it solves. Fit an ordinary valve below a vessel's bottom nozzle and the nozzle plus the valve body above the closure form a pocket that never drains. Product sits there between batches, settles, degrades, and contaminates the next charge. A bottom outlet valve closes at the vessel floor instead, so there is no pocket to accumulate in.

Two references are listed. Both share the same L, L1 and B, and both take a DN 25 bottom outlet (DN2) — what changes is the vessel connection DN and the side outlet DN1.

Features

Built into every unit.

  • Closes at the vessel floor — no dead pocket below the outlet
  • Fits any spherical or cylindrical vessel, per the catalogue
  • Three connections: vessel DN, side outlet DN1, bottom outlet DN2
  • DN 40 and DN 50 vessel connections, both with a DN 25 bottom outlet
  • Common L 260 mm, L1 105 mm and B 190 mm across both sizes

Benefits

Why it earns its place in the line.

  • Complete drainage between batches — no residue, no cross-contamination
  • No dead leg for solids to settle in or product to degrade
  • Fully transparent — the operator can see the valve position and the media through the body
  • Inert to almost all process media; no metal in the wetted path
  • PTFE spindle: no lubrication, no seizing, no contamination of the batch
  • Bolts straight into the borosilicate pipeline range with the same beaded ends and backing flanges

Applications & industries

Where it is specified.

Typical applications

  • Reactor and receiver bottom outlets
  • Batch processing requiring complete drainage between charges
  • Duties where settled solids would block a conventional outlet
  • Bottom sampling from a glass vessel

Industries served

  • Chemical processing
  • Pharmaceutical
  • Fine chemicals & dyes
  • Water & effluent treatment
  • Distillation & solvent recovery
  • Research & pilot plant
  • Agrochemicals

Technical data

Specification for Bottom Outlet Valve.

Figures below are for this product only — every item in the range carries its own dimension table.

Bottom Outlet Valve — technical specification
Product typeGlass bottom outlet valve
MaterialBorosilicate 3.3
SpindlePTFE
Nominal bore rangeDN 40 and DN 50 vessel connection
End connectionBeaded glass ends with backing flanges and PTFE-envelope gaskets
Flange drillingSee the drilling table — BS 10 Table E, BS 10 Table F and ASA drilling available
Pressure ratingNot published on the valve catalogue page — confirm with us for your duty
Temperature ratingNot published on the valve catalogue page — confirm with us for your duty
Catalogue referenceLSBAL series, e.g. LSBAL2 = DN 50
Bottom outlet (DN2)DN 25 on both sizes
Overall length L260 mm
Seat length L1105 mm
Width across B190 mm
Vessel compatibilityAny spherical or cylindrical vessel
Dimension schematic of a borosilicate glass bottom outlet valve showing DN, DN1, DN2, d, L, L1 and B
Dimension references — letters match the table.
Bottom Outlet Valve — dimensions
Cat. Ref.DNDN1DN2dLL1B
LSBAL1.540252526260105190
LSBAL250402538260105190

All dimensions in mm, transcribed exactly from the catalogue page. DN is the vessel connection, DN1 the side outlet and DN2 the bottom outlet. L, L1 and B are identical on both references.

Request a quote

FAQ

Questions we are asked about this item.

In the catalogue's own words, it prevents the accumulation of solid or liquid in the bottom outlet of a vessel. It seats at the vessel floor so there is no pocket below the outlet for product to sit in.

The catalogue states it can be incorporated in any spherical or cylindrical vessel. Send us the vessel drawing and nozzle detail and we will confirm the arrangement.

That is how the table is printed — DN2 is 25 for both LSBAL1.5 and LSBAL2. The vessel connection DN and side outlet DN1 are what change between them.

Enquiry

Tell us your line size — we'll confirm the spec.

Send the bore, the media, the temperature and pressure, and the flange standard you work to. Drawings and custom sizes welcome.

Enquire on WhatsAppChat to us on +91 90336 30547 Request the datasheetWe will email the drawing for this item Talk to a technical expertMaterial selection and duty review Send a drawingWe fabricate to your isometric or sketch Request a custom sizeNon-standard bores, lengths and drilling

Not sure which spec fits your process?

Send your requirement — media, temperature, pressure, dimensions — and we'll recommend the right product or fabricate it.

Talk to an engineer