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.
You may hear a whistling sound -- the telltale symptom of a worn gasket or washer. Rattles from the pipes behind the shower, on the other hand, usually indicate pipes that haven't been properly clamped to the framing. A loud knock when you turn on the valve is a symptom of water hammer, which is caused by excessive pressure in the pipes. You can quiet some noises by servicing the valve, but to dampen others, you may need access to the pipes.