Swing Swing Check Valve Pressure Seal - DIN | Valvosider Swing Check Valve Pressure Seal - DIN | Valvosider The Swing Check Valve Pressure Seal by Valvosider is designed according to DIN standards and is available in various pressure ratings and sizes. It is suitable for high-pressure applications, with pressure classes ranging from PN 100 to PN 420. The valve sizes range from DN 50 to DN 600 for lower pressure classes (PN 100 and PN 160) and DN 50 to DN 400... View Butt Weld PN 100 PN 160 PN 250 PN 320 PN 420 DIN 1.0619 1.4408