Check Valvesmodel C11, C21

by Valland S.p.A.

View Valland S.p.A. on TEKEN44

Check valves prevent flow reversal automatically, without external actuation. Valland manufactures two families: the swing check valve (model C11), with a hinged disc in a single-piece bolted-bonnet body, available with renewable or fixed seats, soft sealing or metal-to-metal, and a lockable disc option; and the dual plate check valve (model C21), with two spring-loaded half-discs in a compact lugged, wafer or double-flanged body with integral metal-to-metal seat.The swing check design suits pipeline and pump/compressor discharge protection where full bore and low pressure drop matter, and can be hyperbaric tested for subsea installation. The dual plate design offers a much shorter face-to-face and lower weight, with faster closing dynamics that reduce water hammer.Like the rest of the range, check valves are engineered per project: materials from carbon steel to super duplex, titanium and nickel alloys, NACE MR0175 compliance on request, fire testing per API 6FA/API 607 and fugitive emission testing per ISO 15848. A recent reference is the supply of 10.000 psi swing check valves to Harbour Energy for the Talbot & Affleck projects (UK).