(1) 低压管路: D219x6:
二楼进户及立管[0.3+0.3+ (4.7-1.5) ]x2=7.6 (m)
一楼水平管母管1.2*3+0.85*2=5.3 (m)
合计: 7.6+5.3=12.9 (m)
D159x5:二根泵前(1.2-0.12) x2=2.16 (m)
D89x4:二根泵前(1.2-0.12) x2=2.16 (m)
(2) 中压管路:
D219x9: 一根母管1.5+0.75x4+0.4+0.3=5.2 (m)
D159x8.5: (1.2-0.12) x2+ (1.2+0.85+2.4)x2+ (1.5+0.75x2) =14.06 (m)
D89x6: 1号泵后(0.75-0.35) +0.25x5+0.6+1+1.2+ (4.7-1.5) +0.3+0.3+0.3=8.55(m)
D89x6: 2号泵后[ (1.2-0.12) +2.9+ (4.7-1.5) +0.3] x2+1.2=16.16 (m)
合计: 8.55+16.16=24.71 (m)
(3) 低压阀门:压力< 1.6MPa J41H-16: DN200-3个；DN150-2个；DN80-2个
(4) 中压阀门:压力处于1.6MPa ~ 6.4MPa之间 J41H-40:DN150-3个；DN80-4个；H41H-40:DN150-2个
