减压阀 AR4000-06,AR5000-06 型 号 接管口径 A B C D AR1000 M5 66 7 25 - AR2000 1/8-1/4 97.5 11 40 40 AR3000 1/4-3/8 132.5 14 53 53 AR4000 3/8-1/2 168.5 18 70 70 AR4000-06 3/4 172.5 20 70 70 AR5000 3/4-1 247.5 24 90 90