RETURN ON INVESTMENT
Using natural gas as a fuel, at a cost of $4.90 per thousand cubic feet, estimated savings for a four-inch valve would be $150 per year.
An uninsulated four-inch flanged valve operating at 347 degrees F for 8,760 hours per year will lose an estimated 31.4 million BTU’s or $153.89. The same valve, covered with a two-inch thick insulation blanket will lose .753 million BTU’s or $3.68 per year. Insulating the valve saves an estimated 30.648 million BTU’s per year, or $150.18.
Investment for a two-inch-thick blanket for a four-inch flanged valve is $150 providing a return on investment within one year.
