IWA 0658, Control Valve Calculations

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Country of manufacture: Germany,            Date of manufacture: >= 1971
Overall length: 28.0 cm,          Width: 4.0 cm,          Weight: 50.8 gms
Materials: all plastic
Cursor: 4.0 X 4.8 X 0.9 cms; all plastic, slightlly magnifying; lines = see expanded views, below
Scales: 16, some specialized
Front: (1) P1 V1 [ (2) Δp, (3) Q(4) G ] [ (5) p1, (6) T1 ] (7) k_v
Back: x³, x² [ x², 1/x, x ] [ x, lg x, (8) Q ] (9) NW
Condition: C5 (Normal signs of use)
Came with: Nothing

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