Betts External Chemical Hydraulic Valve is classified as an external self-closing stop valve and is widely used on DOT407 and 412 cargo tanks. This is a robust and proven valve that satisfies the many requirements of the chemical transportation industry. The 316-stainless body and replaceable Teflon? seal make this valve a versatile and reliable workhorse for any fleet. This valve does NOT include a sacrificial shear section; therefore, the cargo tank must have adequate accident damage protection to shield the valve as specified in 49CFR 178.345-8.,
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