Title: +038=320.103-SB005T_08-Energy Valve Reguleringsventil Belimo - Generelle merknader for prosjektering.pdf
6. Checking valve authority Pv (control stability)6. Checking valve authority Pv (control stability)Check Pv with the differential pressure ∆pv100 that results. A valve authority of ≥ 0.5 is desired: – Pressurised distributor with variable volumetric flow (2-way control valves)Pv =∆pv100 ∆pVR– Pressuriseddistributorwithconstantvolumetricfloworlow-pressure distributor with variable volumetric flow (3-way control valves)∆pv100 ∆pv100 ∆pMVkvs [m3/h]0.1...80.1...80.25...415...498.6...4915...49Valve typeZone valvesOpen/close ball valvesDesignationQCVQCV6-way characterised control valveCharacterised control valveCharacterised control valveCharacterised control valvePipe connectionInternal threadExternal threadInternal threadInternal threadExternal threadFlange2-wayC2..Q-..C4..Q-..R2..R4.. R4..KR6..R 1) R6..W 2)3-wayR3..R5.. R5..KR7..R 1)6-wayR30..-..-B2/B3DN15...2515/2015...2515...5010...5015...150PN