Main menu	Flange Facing LEAK SEALING EQUIPMENT   All restriction adapters and all injection equipment used during the leak sealing process are manufactured by WALDUBA in South Africa, in IOS 9002 accredited facilities and tested to ensure compliance. Every item is hard stamped, certified and traceable COMPOUNDS   Standard WALDUBA compounds used in leak sealing are semi rubber materials, currently available in several grades in different forms.They all have the same basic characteristics, in that they soften when heated and cure to form a tough permanent seal under subsequent heating, and are free of asbestos   WALDUBA's leak sealing compound are manufactured by WALDUBA, and tested to ensure consistency and correct formulation. WALDUBA has developed a range of sealing materials to cope with a large variety of leaks of different chemicals, temperatures and pressures

Diagram of Compound travel by injection WALDUBA has successfully sealed leaks on condensate, boiler feed water, steam, super heated steam, process water and alkalis at pressures from vacuum to 220 bar and temperature from 30 'C to 420 'C at various Power Stations in Southern Africa and neighbouring countries as well as Chemical Plants	Clamps and Boxes   For sealing leaking flanges at all pressures where the gap between the flanges is greater than approximately 8mm, a WALDUBA Insert Clamp is used. For sealing leaking pipeline defects etc. a box enclosure is used WALDUBA clamps and boxes are designed using CAD program and manufactured in South Africa. Clamps and boxes are checked against specifications and defects at every stage of the manufacturing procedure and a record is kept.   Quality Assurance Before any leak other than steam, water or compressed air is attempted, our technicians determine the type of leak, it's location, it's size and it's temperature and pressure. They then contact the office who analyses the information and prescribes the proper sealant for the job. Appropriate safety measures and special techniques are received and then the leak is sealed.
Tube Testing
WALDUBA can perform air tests on each individual tube. Test all the tubes or isolate a specific area. This method can locate leaking tubes fast. This is a quick low pressure testing of heat exchanger and boiler tubes (3-5 tubes per minute) (depending on the diameter and length of the tube) at a test pressure of 40 -125 psi .	SAFETY VALVE TESTING WALDUBA offers safety valve testing facilities in a workshop environment. The work performed on valves that are removed from site are guaranteed and certified
Valve Repair, Manpower, Pricing
Valve Repair   Almost any type & make of valve can be re-conditioned. Valve repair is most commonly done on site (in'situ) but also in workshop. Jobs will be CERTIFIED on day of completion. Manpower All supervisory management in the field is qualified artisans with at least 5 years experience in their particular discipline. All maintenance work is undertaken by a team of two Walduba technicians, to ensure efficiency, a safe working environment and to comply with the provisions of the Occupational Health and Safety Act (No. 85/1993). Pricing Prices are fixed for the full 12 month period if contract is negotiated and are exclusive of V.A.T. A quote is valid for 30 days V.A.T. will be shown as a separate item on our "Tax Invoices".