rough order of magnitude (ROM) Definition. An estimate of costs and time provided in the early stages of a project when its scope and requirements has not been fully defined. An ROM is used to reduce the uncertainty of cost outcomes for both parties when project details have yet to be identified. Use this term in a sentence.
Prior To Fitting Your Wickes Water Softener. The water softener must be installed inside a plastic water tank, this tank should then be you may hear a hissing noise as the water rushes through the valve. Once the hissing noise has stopped, open the outlet valve and run some water.
Whining is often caused by a malfunction or blockage within the ballcock assembly, or refill valve. A whining noise when your toilet tank is filling may be the result of something simple, such as a partially closed valve. But often the problem is that one or more parts within the ballcock assembly needs cleaning or replacement.