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Leakage is out, The Piston Valve is in The Piston Valve is a seatless and glandless valve. At the heart of the Piston Valve are the Piston and Sealing Rings. A burnished piston seals against metal reinforced graphite rings to achieve leak proof shutoff. This unique design ensures, long life even at high temperatures - upto 425°C. Superior Features: * Burnished Piston and metal reinforced graphite sealing rings |