By order of the publisher, historical UL documents are not returnable for any reason. Once you place an order for an historical document, we cannot issue a refund, credit, or exchange of any kind.This standard covers quick opening devices intended for attachment to dry pipe valves to reduce the time delay in operation of the valve following opening of one or
more sprinklers. The quick opening devices consist of accelerators and exhausters for use with a specific dry pipe valve design.
The products covered by this standard are intended for use in fire protection service as outlined by the Standard for Installation of Sprinkler Systems, NFPA 13.
A product that contains features, characteristics, components, materials, or systems new or different from those in use when the standard was developed and that
involves a risk of fire, electric shock, or injury to persons shall be evaluated using the appropriate additional component and end-product requirements as determined
necessary to maintain the level of safety for the user of the product as originally anticipated by the intent of this standard.
| Edition : | 2nd |
| Published : | 01/01/1993 |
