US 11,781,659 B2
Methods and systems for dual force valve actuation
Klaus Gebauer, Uppsala (SE)
Assigned to CYTIVA SWEDEN AB, Uppsala (SE)
Appl. No. 16/981,114
Filed by Cytiva Sweden AB, Uppsala (SE)
PCT Filed Mar. 21, 2019, PCT No. PCT/EP2019/057073
§ 371(c)(1), (2) Date Sep. 15, 2020,
PCT Pub. No. WO2019/185442, PCT Pub. Date Oct. 3, 2019.
Claims priority of application No. 1804785 (GB), filed on Mar. 26, 2018; and application No. 1805511 (GB), filed on Apr. 4, 2018.
Prior Publication US 2021/0062923 A1, Mar. 4, 2021
Int. Cl. F16K 7/04 (2006.01); F16K 7/12 (2006.01); F16K 31/12 (2006.01); F16K 31/122 (2006.01); F16K 31/126 (2006.01)
CPC F16K 7/04 (2013.01) [F16K 7/12 (2013.01); F16K 31/12 (2013.01); F16K 31/122 (2013.01); F16K 31/126 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A method for controlling at least one valve provided to a tube in a bioprocess flow system, said method comprising the steps of:
controlling the at least one valve to be in a first state, which is an open state when a flow through the tube should be allowed;
controlling the at least one valve to be in a second state during some parts of a process run in the system, said second state is a closed state where a first closing force is provided; and
controlling the at least one valve to be in a third state during some parts of a process run in the system, said third state is a closed state where a second closing force is provided which is a higher force than the first closing force
wherein the steps of controlling the at least one valve to be in the second state and the third state comprise urging a pinching portion of the tube into sealing contact.