ASME HST-2-2023 is a newly-revised Standard which establishes performance requirements for hand chain manually-operated chain hoists for vertical lifting service involving material handling of freely suspended (unguided) loads. These hoists use welded link type load chain as a lifting medium with one of the following types of suspension: 1. hook or clevis 2. trolley This Standard is not applicable to: 1. damaged or malfunctioning hoists 2. hoists that have been misused or abused 3. hoists that have been altered without authorization of the manufacturer or a qualified person 4. hoists used for lifting or supporting people 5. hoists used for the purpose of drawing both the load and the hoist up or down the hoist's own load chain 6. hoists used in application where the load on the hand chain hoist is not freely suspended from the hand chain hoist.
This Standard applies to new valve construction and covers quarter turn manually operated metallic valves in sizes NPS 4 1â??4 and tubing sizes 1 1â??4 O.D. These valves are intended for indoor installation as gas shutoff valves when installed in aboveground fuel gas piping downstream of the gas meter outlet and upstream of the inlet connection to a gas appliance. The valves covered by this Standard are intended for service at temperatures between 32F (0C) and 125F (52C) at pressure ratings not to exceed 5 psi (0.34 bar). When so designated by the manufacturer, these valves may be installed for service outdoors and/or at temperatures below 32F (0C) and/or above 125F (52C).