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Title: New Developments-Gas Regulator Equipment
Author: Emil Copeland
Source: American Gas Association 1973
Year Published: 1973
Abstract: We are using a new and different approach to the problem of overpres,sure in a gas meter: we have designed a meter relief system that has several distinct advantages: 1. Fast and easy installation-- The system can be mounted directly to the top of the gas meter in place of the cover plate by merely using four bolts. This is done without disturbing the piping, 2. High capacity-The relief orifice and vent are designed for extremely high capacity. The meter-relief system can handle a complete failure of the regulator even if the inlet pressure exceeds the manufacturers maximum recommended inlet pressure rating by 20% for a given size orifice. For example: The meter relief, as designed, will pass approximately 4700 CFH and will still maintain the service pressure under 1 lb.

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