Prem Chem ValVes - Premier Valves

installation and maintenance9Installationand maintenanceTeflon lined valves and pipelines have inherent propertieswhich must be considered when installing and maintainingthese products.1. Take care to protect all PTFE- lined flange faces duringstorage and installation.2. If there is any leakage at high temperature from a valve,ensure that temperature source is removed and temperatureis ambient before doing any removal or maintenance.3. High temperature welding close to Teflon-lined valves isstrictly prohibited.4. Flange bolts must be tightened in a diametrically opposedfashion with proper torque wrench to ensure even tighteningof the flange faces. If there is a leakage on the flange surface,loosen the nut closest to it by one turn and then retighten.If this does not solve the problem, check for damage on thePTFE flange surfaces. Repair damage with sandpaper oremery cloth and re-install.5. Valves should be stored in a dry and ventilated room, andvalves should not be stacked.6. When Teflon lined valves need to be stored for a long time,keep the sealing faces slightly opened to ensure no long termdeformity of the seals.7. Valves have been designed to open and close with theprovided levers or gearboxes. Excessive force required tooperate the valves normally means there is some foreignparticle or damage preventing normal opening or closing.8. Ensure that the valves are installed with flow in the directionas indicated with the arrow on the body of the valve.9. Any repaired valve should be properly inspected beforere-installing.A P.O. Box 11735, Randhart, South Africa, 1457 W www.premiervalves.co.zaT +2711-908-3760 F +2711-908-1268 E sales@premiervalves.co.za