Armstrong
จากประเทศ U.S.A.
วาล์วระบายอากาศ
11-AV, 22-AV and 13-AV—All stainless steel construction where exposure to either internal or external corrosion is a problem. These air/gas vents have the same proven free floating mechanisms used in other Armstrong steam traps. Pressures to 600 psi @ 100°F (41 bar @ 38°C).
