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Bulk Hot Water Cylinders

Our manufacturing team is spearheaded by skilled professionals with years of experience, who engineer and produce only the highest grade pressure vessels that are innovative, reliable and durable.


Welded from high quality metals and treated with superior coatings, the vessels are designed and manufactured according to ASME VIII DIV1 and SANS 347:2012 requirements.

About the Product

We fabricate and distribute standard vessels ranging from 500 litres to 10 000 litres, as well as fabricating vessels according to customer specifications. The vessels are designed and manufactured according to ASME VIII DIV1 and SANS 347:2012. We are also capable of certification of the vessels by an independent inspection authority, if it is specified and required.

Before the coating of the vessels takes place it is grit blasted and is certified to confirm that the steel work has been blasted in accordance with clause 4.3 of SABS 064/ISO8501/1 grade SA2.5. As well as obtaining and angular blast profile as set out in the standards. This is to ensure that the coatings applied have the highest possible adhesion to the steel.

The vessels’ interior is treated with two coats of Tank Guard at 150μm. This is a two-component, solvent free, polyamine cured epoxy coating. It is a general-purpose tank lining with good chemical resistance. It can be used as primer, mid coat or finish coat in atmospheric and immersed environments. It’s suitable for properly prepared carbon steel, galvanized steel, stainless steel and concrete substrates.

The vessel is covered with a layer of Glass wool, a product produced from a combination of up to 80% recycled glass, naturally occurring silica and fluxing agents resulting in a product that has Zero Ozone Depleting Potential (ODP). No CFC’s or HCFC’s are produced in the process. Over this layer a galvanized sheet of 0.8mm is placed or another option of 0.7mm mirror finish stainless steel sheeting to protect and finish off the vessel.



SIRAC Southern Africa (Proprietary) Limited
23 Reen Avenue


Cape Town

South Africa

©SIRAC Southern Africa (Proprietary) Limited 2021.
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