HAYWARD INDUSTRIAL PRODUCTS INC., ELIZABETH, N.J. New Safe-T-Lok bulkhead fittings (tank adapters) with Viton seals, are said to offer excellent protection from aggressive chemicals and are designed to allow piping systems conveying highly corrosive fluids to be safely connected to plastic, metal, or fiberglass tanks or other containers without fear of seal deterioration. Fittings can be installed by one person, yet they are of extremely heavy design and include heavy-duty buttress threads so that the fitting may be tightened sufficiently to help prevent leaks under pressure. They are available in PVC, Corzan CPVC, and natural PPL in 1/2-in. through 4-in. pipe sizes and are rated at 150 psi at 70[degrees]F.