The gas supplied by corporation low pressure (LP) district regulator station shall be maintained at a pressure of not less than six inches (6 in.) or more than ten inches (10 in.) of water pressure. Certain customers, however, require higher pressures which may be mutually agreed upon by the customer and the gas corporation.
The daily variation in the low pressure network system, during any day at any gauge station, shall not exceed two and a half inches (2.5 in.) of water pressure.
There shall be supplied, installed, and maintained by each gas corporation pressure gauges which shall furnish an accurate record of the pressure maintained throughout the District of Columbia. The records shall include the following:
In cases where it is necessary to install a pressure regulator or governor on the consumer's premises ahead of the consumer's meter, the regulator shall be installed in accordance with the Gas Fitting Regulations for the District of Columbia.
The gas corporation shall inspect the regulator and vent pipes when installed, and thereafter at intervals not greater than the time of the periodic test for the meter it supplies, to determine that they are in safe operating condition. If found faulty in any respect, the fault shall be corrected immediately.
D.C. Mun. Regs. r. 15-2377