circle seal安全阀 559b-8m-12.5 黄铜 buna n 1 in 12.5 psig
circle seal安全阀 559b-8m-100 黄铜 buna n 1 in 100 psig
circle seal安全阀 559b-8m-10 黄铜 buna n 1 in 10 psig
circle seal安全阀 559b-6mp-20 黄铜 buna n 3/4 in 20 psig
circle seal安全阀 559b-6m-5 黄铜 buna n 3/4 in 5 psig
circle seal安全阀 559b-6m-2.5 黄铜 buna n 3/4 in 2.5 psig
circle seal安全阀 559b-4m-90 黄铜 buna n 1/2 in 90 psig
circle seal安全阀 559b-4m-8 黄铜 buna n 1/2 in 8 psig
circle seal安全阀 559b-4m-60 黄铜 buna n 1/2 in 60 psig
circle seal安全阀 559b-4m-4 黄铜 buna n 1/2 in 4 psig
