# NODES_SPECS
Node,Height_m,Pressure_Pa,Pressure_bar,Recommended_Medium,Medium_Size_or_Volume,Recommended_Precharge_bar,Installation_Notes
T1,5.7,55917.0,0.55917,Commercial bladder (expansion vessel),24L - 50L (start 24L),0.30 - 0.50,Mount external bladder tank near outlet; use ball-valve & pressure gauge; precharge to 0.3 bar
T3,2.8,27468.0,0.27468,Standard water buffer / empty,-,,"Leave room for sensors (float switch, level sensor) and access panels"
T2,2.2,21582.0,0.21582,Diffuser + packed media (ceramic bio-balls/gravel) + small bladder,Media: 10-30 cm layer; bladder 5-10L,0.05 - 0.15 (optional small bladder),Install diffuser with small holes above media; use removable basket for media
Sandfilter,2.1,20601.0,0.20601,Sand filter media (silica sand),50-100 kg bed (depending on filter size),,Multiport valve: FILTER/BACKWASH/RINSE/WASTE positions; place on stable base at ~2.10 m
T4,2.0,19620.0,0.1962,Standard water buffer / empty,-,,"Leave room for sensors (float switch, level sensor) and access panels"
T6,1.8,17658.0,0.17658,Standard water buffer / empty,-,,"Leave room for sensors (float switch, level sensor) and access panels"
T5,1.4,13734.0,0.13734,Standard water buffer / empty,-,,"Leave room for sensors (float switch, level sensor) and access panels"
T7,0.8,7848.0,0.07848,Pre-turbine inlet screen + spiral plate,Mesh screen 5-10 mm; spiral plate PVC,,Protect turbine; ensure debris exclusion and even flow
T8,0.0,0.0,0.0,Return sump with coarse gravel + optional UV module,10-20 cm glass/gravel; UV unit sized to flow,,Install UV outside water splash area; provide access for maintenance

# SEGMENTS_SPECS
Segment,From,To,Length_m,Recommended_Diameter_mm,Recommended_Material,Segment_Notes
S1,T1,T3,2.0,50 mm (use 63 mm if long roof loop),UV-stabilized PVC (on roof) / PN10 PVC,Minimize bends; place air-release vents at high points; use rubber pads on supports.
S2,T3,T2,1.5,50 mm (use 63 mm if long roof loop),UV-stabilized PVC (on roof) / PN10 PVC,Minimize bends; place air-release vents at high points; use rubber pads on supports.
S3,T2,Sandfilter,1.0,50 mm (use 63 mm if long roof loop),UV-stabilized PVC (on roof) / PN10 PVC,Minimize bends; place air-release vents at high points; use rubber pads on supports.
S4,Sandfilter,T4,0.5,50 mm (use 63 mm if long roof loop),UV-stabilized PVC (on roof) / PN10 PVC,Minimize bends; place air-release vents at high points; use rubber pads on supports.
S5,T4,T6,2.0,50 mm (use 63 mm if long roof loop),UV-stabilized PVC (on roof) / PN10 PVC,Minimize bends; place air-release vents at high points; use rubber pads on supports.
S6,T6,T5,1.0,50 mm (use 63 mm if long roof loop),UV-stabilized PVC (on roof) / PN10 PVC,Minimize bends; place air-release vents at high points; use rubber pads on supports.
S7,T5,T7,1.0,50 mm (use 63 mm if long roof loop),UV-stabilized PVC (on roof) / PN10 PVC,Minimize bends; place air-release vents at high points; use rubber pads on supports.
S8,T7,T8,1.0,50 mm (use 63 mm if long roof loop),UV-stabilized PVC (on roof) / PN10 PVC,Minimize bends; place air-release vents at high points; use rubber pads on supports.
S9,roof_loop_start,roof_loop_end,12.0,63 mm recommended if S9 retained long; otherwise 50 mm,UV-stabilized PVC (on roof) / PN10 PVC,"If keeping long roof loop, increase diameter to 63 mm or reduce length; ensure not higher than T1"