Refractory Accessories
Ceramic Ferrules
Refractory ceramic sleeves fitted into the tube inlets of waste heat boilers to protect the tube ends and tubesheet from hot, erosive inlet gas. Sized to the boiler tubes; material and dimensions confirmed on quotation.
Also known as: Ceramic ferrule, Boiler ferrules, Tubesheet ferrules, Refractory ferrules, Alumina ferrules
- Temperature rating
- Material-dependent; confirmed on quotation
- Packaging
- Cartons, packed to prevent breakage; confirmed on quotation
- Availability
- Out of stock
- Supply basis
- Quotation against specification
About Ceramic Ferrules
Ceramic Ferrules are refractory ceramic sleeves inserted into the inlet ends of boiler tubes in waste heat boilers and similar heat exchangers. The hottest, most erosive gas meets the tubesheet first; the ferrules carry it into the tubes and shield the tube ends and tube-to-tubesheet welds from overheating and erosion.
Ferrules are usually set into a refractory lining over the tubesheet, with ceramic fibre paper or rope wrapped around them to fill the gap and allow for expansion. They are replaced during boiler inspections when cracked or eroded.
Ferrules are made to fit the tube size. Material, length and outside diameter are confirmed on quotation, so send the tube dimensions or a drawing of the ferrule in use.
Zenco Systems supplies ceramic ferrules from Nairobi across Kenya and East Africa, together with the ceramic fibre paper, castable and anchors used around them.
Technical Specification
Material CompositionRefractory ceramic; material confirmed on quotation†
Temperature RatingMaterial-dependent; confirmed on quotation†
Dimensions & ThicknessMade to fit the boiler tube; length and diameter confirmed on quotation†
† Indicative figures for this material class. Grade, density and temperature rating vary between manufacturers, so these are confirmed against the manufacturer's datasheet for the grade supplied when we quote. Request the datasheet for the certified values.
Applications
Protecting tube ends and tubesheets in waste heat boilers.
- Waste heat boiler tube inlets
- Sulphur recovery unit waste heat boilers
- Tubesheet protection in heat exchangers
- Replacement during boiler inspections
Forms, Sizes & Packaging
Packaging
Cartons, packed to prevent breakage; confirmed on quotation
Supply Region
East Africa
Supplier
Zenco Systems Ltd
Packaging options
- Cartons, packed to prevent breakage; confirmed on quotation
Selection & Installation Guidance
Installation
Wrap with ceramic fibre paper or rope, insert into the tube inlet, and set into the tubesheet refractory as specified.
Match replacement ferrules to the tubes and to the ferrules currently fitted: tube inside diameter, ferrule length and head shape.
To request a quotation, send the tube dimensions or a ferrule drawing, the quantity and the delivery site.
Safety & Handling
Ceramic ferrules are brittle; handle and store them in their packaging to avoid chipping.
Documentation
The manufacturer's technical datasheet and safety data sheet for the grade supplied are issued with every quotation, and name the certified values for this material.
Related Products
More equipment in Refractory Accessories
Frequently Asked Questions
What does a ceramic ferrule do?
It lines the inlet end of a boiler tube, carrying the hottest gas into the tube and protecting the tube end and tubesheet weld from overheating and erosion.
How do I order the right size?
Send the tube inside diameter and a drawing or the dimensions of the ferrules currently fitted.
What should I send to get a quotation?
The tube dimensions or a ferrule drawing, the quantity and the delivery site. Availability, packaging, transport and documentation are confirmed by the sales team before dispatch.
Request a Quotation for Ceramic Ferrules
Tell us the grade, dimensions and quantity you need and we will come back with a price, the manufacturer's datasheet and lead time for your order.