Abstract: A standpipe leveler is suitable for use with the standpipe of a tank tester that is elevated to produce hydrostatic pressure on the tank. The leveler includes a graduate container for receiving liquid discharged from ports in the standpipe. The graduate container is connected to the inlet of a pump. The outlet of the pump is connected to the base of the standpipe for supplying liquid to the standpipe. A reservoir container may also be connected to the inlet of the pump and a drain or sump connected to the outlet of the pump. The graduate container may be located at a convenient level for the technician carrying out the hydrostatic pressure test to observe reduction of the liquid level in the graduate container due to leakage from the tank.

Abstract: An insolation plug suitable for leakage testing a liquid conduit has an O-ring seal mounted adjacent one end of its body to mate with a sleeve in a pump fitting for the conduit when the plug is inserted in the fitting through a threaded hole. This seals off the outlet of the fitting from its remaining portions. The plug contains a bore through which the liquid in the conduit may be pressurized for testing purposes. An additional base in the isolation plug communicates with the portions of the fitting upstream of the seal to permit liquid to be discharged from the tank through the additional bore.