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Liquid Seal Drums

Oil & gas · Flare systems

Liquid Seal Drums

The pressure part that holds a water seal between the flare header and the stack, stopping flashback. Fabricated, tested and coated in house.

Explore the 3D model Send us a drawing

Allmarc 3D model · to scale

Explore the model

How it is built.

Scroll: the camera moves to each part in turn and ends on the exploded view. Drag to turn it round yourself.

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01 / 06

A flare liquid seal drum

Modelled from the drum we delivered: the gusseted flange, the baffle inside and the seal pipe are where they are in our photographs.

Scroll to see how it is built · drag to turn it round

02 / 06

A large flange that stays flat

A ring of radial gussets braces the flange to the shell. The hard part is keeping the face flat after they are welded behind it, because it still has to seal against a header made by somebody else.

How is it possible at Allmarc?

HSG 12 kW fibre laser in the Allmarc works

Used here for: A large flange that stays flat

12 kW
Cuts up to 40 mm
2,500 x 8,000 mm bed

All our machinery

03 / 06

The internals

A dished baffle set convex to the inlet with an annular gap to the wall, and a seal pipe brought in through the shell onto a boss at its centre.

How is it possible at Allmarc?

Three-roll pinch cum pyramid plate rolls in the Allmarc works

Used here for: The internals

Rolls plate up to 40 mm

All our machinery

04 / 06

Every nozzle a real penetration

Set out to drawing, opened through the shell, reinforced and finished with raised-face flanges by qualified welders.

How is it possible at Allmarc?

Used here for: Every nozzle a real penetration

Qualified welders, including 6G

All our machinery

05 / 06

The pressure envelope

Rolled shell and conical outlet, fabricated and tested as a code pressure part with the documentation that goes with it.

How is it possible at Allmarc?

Used here for: The pressure envelope

Rolls plate up to 40 mm

All our machinery

Blasting and painting booths in the Allmarc works

Used here for: The pressure envelope

A Level 2 coating inspector on the floor full time; weather checked and a test before every batch of paint.

Dust collection
15 m paint booth for long sections
Sa 2.5 blasting

All our machinery

06 / 06

Every part, apart

Flange, gussets, baffle, seal pipe, nozzles and shell: the whole drum laid open.

From our works

Delivered, coated and ready

The drum as it left our works: flange face, gusset ring and side nozzles, coated and inspected.

Coated liquid seal drum for a flare system, showing the bolted flange face, gusset ring and side nozzles

From our works

Inside, as built

Looking in through the flange: the dished baffle and the seal pipe turning onto it. These are the internals the 3D model above takes apart.

Looking into the open flange of a finished liquid seal drum, showing the internal dished baffle and seal pipe

From our works

Made in our works.

Why Allmarc

Experience you can trust.

We fabricate to your drawings and prove the fit in our own bay before anything ships. Open any line for the detail.

Talk to an engineer

Fabricated to your drawings

We build to the licensor’s design.
We do not compete with the people who send us work.

Proven before it ships

Trial-assembled in our bay.
Fit-up is settled in Ahmedabad, not on site.

Plate to packed container

Procurement, rolling, welding and NDT, coating, insulation.
Export packing designed for the journey.

Scale

Made in Unit 2, our precision plant for oil and gas; 4 plants at Kanbha, about 6,000 T a month from November 2026.
2,400 tonnes of flare equipment exported to date.