SUPERIOR QUALITY LININGS FOR WATER & WASTEWATER TREATMENT EQUIPMENT
BLAIR'S ENDURAFLEXTM performance linings for water and wastewater treatments are:
WATER TREATMENT UNITS:
- PRESSURE FILTERS
- ION EXCHANGE
- CONDENSATE POLISHERS
BLAIR RUBBER'S personnel are experienced in the correct analysis and processing of rubber compounds engineered for the highly corrosive and abrasive environments encountered by water and wastewater treatment equipment.
BLAIR'S ENDURAFLEXTM performance linings for water and wastewater treatments are:
Natural Rubber VE-611-BN, 60 Shore A durometer, natural rubber is designed for low water absorption in clarifiers and condensate polishers.
One white, soft EnduraflexTM VE-619-WN, is available and offers ultra pure water protection. It has the same excellent acid and water resistance of the black style lining with the added features of being white and food grade.
EnduraflexTM VE-821-BNS, an 80 durometer and EnduraflexTM VE-926-BNS, a 90 durometer.
Both linings offer excellent water, chemical resistance and are food grade compounds for ion exchange units and filters. The two different hardness levels offered are for the customers preference. The lower durometer of VE-821-BNS has greater impact resistance.
One white, semi-hard EnduraflexTM VE-823-WNS, is available and offers sight glass internal inspection. It has the same excellent acid and water resistance of the black style lining with the added features of being white and food grade.
SUPERIOR QUALITY LININGS FOR NUCLEAR POWER WATER TREATMENT
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NUCLEAR POWER WATER TREATMENT
Blair Rubber's personnel are experienced in designing and processing rubber compounds for the highly corrosive environments encountered in Nuclear Power Water Treatment applications.
Nuclear facilities require sulfites to be at absolute minimum levels. In order to maintain these low levels when using semi-hard rubber linings in demineralizing water treatment units, the lining must be pressure cured; either in an autoclave or by using the vessel as its own autoclave. Only high steam pressure curing will cross-link and combine the sulfur in semi-hard rubber linings. On the original vessel, this is not difficult because linings such as ENDURAFLEXTM VE-821-BNS, VE-823-WNS and/or VE-926-BNS can be internally steam cured. It is recommended they be cured 12 hours at 260°F.
With older vessels requiring repairs, one has to make a judgment call as to how to repair the vessel. Basically, there are two options of repair. One is to use a chemical cure lining that is appropriate to match the lining in the vessel. Chemical cure linings, may have high leechable sulfite levels, even when cured with steam. Therefore, chemical cure linings are only considered acceptable on minor repairs. (C-922-BN) is a chemical cured semi-hard lining that has experienced success in repairing nuclear power plant vessels because of its low leechable sulfites when thoroughly cured.
The other option is to use the original semi-hard lining to repair with an internal steam pressure cure. However, one runs the risk of damaging the original lining when making a partial repair. Though the linings listed above will exhaust steam, the threshold level of leechable sulfites is not acceptable. Therefore, if one has a large area of repair, the safe recommendation is to strip and re-line the entire vessel with a pressure cured lining.
Contact BLAIR RUBBER's technical staff for assistance in selecting the correct lining for a specific service condition.
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5020 Panther Parkway, Seville, Ohio 44273
Phone: 330-769-5583
Fax: 330-769-9334
Email: sales@blairrubber.com