PV diagram of the p-H₂S(﹩{J}_{{K}_{{\rm{a}}},{K}_{{\rm{c}}}}﹩ = 2₂₀ → 2₁₁) line emission from W43A. The H₂S emission exhibits the characteristic morphology of a double-lobe structure, indicated with a solid black line, similarly to the shell delineated by the continuum emission. The velocity offset is defined with respect to the systemic velocity of the star V_sys = 34 km s⁻¹. The vertical dashed lines indicate the radius where the H₂O masers are located. The horizontal white dashed lines indicate the maximum velocity offset along the line of sight of the shell traced by the p-H₂S(﹩{J}_{{K}_{{\rm{a}}},{K}_{{\rm{c}}}}﹩ = 2₂₀ → 2₁₁) emission. The contours are from 4σ on steps of 4σ (σ = 1 mJy beam⁻¹).