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SKU HL-6IN-12NPT
USA Lab
6" Hemispherical Lid - 3x 1.5" TC - 2x 1/2" FNPT - 2x 1/4" FNPT - SS304
in Lids
$149.00
In stockA 304 stainless hemispherical lid for a 6″ tri-clamp vessel carrying seven ports on one dome: three 1.5″ tri-clamp, two 1/2″ FNPT and two 1/4″ FNPT. The domed profile stands proud of the clamp face rather than sitting flush, so sight glasses, thermowells and probe fittings do not compete for the same plane. Supplied as SKU HL-6IN-12NPT.
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Description
A hemispherical lid in 304 stainless steel for a 6″ tri-clamp vessel. Seven ports are set into the dome, which is the reason to choose this over a flat lid: the curved surface gives each fitting its own approach angle instead of crowding them onto a single flat plane.
Ports
- 3 × 1.5″ tri-clamp
- 2 × 1/2″ FNPT
- 2 × 1/4″ FNPT
Specification
- Material: 304 stainless steel
- Vessel connection: 6″ tri-clamp
- SKU: HL-6IN-12NPT
Clamps and gaskets — one 6″ set for the vessel joint and one 1.5″ set per tri-clamp port used — are separate line items in this catalogue and are not supplied with the lid. Plugs for unused NPT ports are likewise not listed.
Our source data for this item does not include a dimensioned drawing, a weight, or a pressure or temperature rating. If you need any of those before specifying it, ask and they will be requested from the manufacturer rather than estimated.
Frequently asked questions
How many ports does the lid have and what sizes are they?+
Seven in total: three 1.5" tri-clamp ports, two 1/2" FNPT ports and two 1/4" FNPT ports, all set into the dome.
What does it mount to?+
A 6" tri-clamp ferrule. You will need a 6" clamp and gasket to make the joint; those are separate line items and are not included.
What is it made of?+
304 stainless steel, per the manufacturer's model designation for HL-6IN-12NPT.
What is the pressure or temperature rating?+
Our source data for this lid does not state one, and we will not quote a figure we cannot document. If your application is pressurised or runs outside ambient, ask us to obtain the manufacturer's rating before you specify it.
How does this differ from the flat lid version?+
A flat lid closes the vessel in the plane of the clamp face and is typically around 3" deep overall in this size class; the hemispherical lid domes above it, which is what allows seven ports to be arranged without interference. The 6" flat lid with a 3" tri-clamp port and two 1/4" FNPT ports is stocked separately.
Are plugs supplied for ports you do not use?+
No plugs or blanking caps are listed with this item. NPT plugs and 1.5" tri-clamp end caps are stocked separately and can be added to the same quote.











