Ratermann Manufacturing, Inc. Customer Service 1-800-264-7793 y Email [email protected] y Order Online at Web Store www.rmiorder.com 20A-27 MAINTAINING YOUR HOSE Handy chart to check when Hose Replacement is Recommended Replace Old Hoses Remove and replace old hoses. All too often, hoses are overused. Contrary to popular belief, hoses do not last forever! Every high pressure hose has a life expectancy. This is typically based on the amount of service the hose has provided, and the manner in which it has been used. A good “rule of thumb” is a hose that see 18 cylinder changes per day, five days a week, will operate safely for approximately 18 months. At this rate, the hose will have been connected and disconnected 12,960 times. Provided that the hose has not been abused in any other way this is a good point of reference. Please note reference guide below that will help to determine when a hose should be changed out. Keep in mind, hoses attached to a fill manifold can be con- nected and disconnected up to 20 times a day. This equates to 9600 changes per year. At an average cost of $20.00 per pigtail, this tool is costing pennies per change-out. One of the most common problems associated with cryogenic hose is exceeding the recommended velocity. If you exceed the recommended velocity, damage will occur. If this is of interest, we would be happy to supply a velocity chart for our hoses. All of our hoses include a band that states the date of manufacture, and MAWP. Don’t assume that just because a hose is being used for a par- ticular application, that it is the correct hose. Call our Service Representative at 1-800-264-7793 to make certain that you are using the right hose for a particular application. To sum it up, a regular “hose” maintenance program is a great idea. Simply conduct regular visual inspections of the hoses that you use. Also, perform pressure test to ensure the hose is in good condition. Any hoses that fail these two test should be removed and replaced. Track the cycle rate of your current hoses and replace as required. With these three simple steps, you can maximize the life of your high pressure and cryogenic hoses, while adding a new layer of safety for your employees and customers. Circumferential cracks on the convolution are typically caused by high velocity flow rates Tube trailer hoses can get “banged around” and bent in a myriad of configurations. It is important to inspect all cryogenic hoses for leaks on a regular basis. High Pressure Hose Cycle/Use Replacement Chart Cycles per Day 4 6 8 10 16 20 Equals # of Changeouts per Month 160 240 320 480 640 800 Equals # of Changeouts per Year 1,920 2,880 3,840 5,760 7,680 9,600 Expected Life* (months) 24 22 20 18 16 12 *This is an approximate life expectation based on normal use. These numbers are not intended to be used with other hose types. Ratermann’s Oxygen Safe CGA & Valve Leak Check Find your Leaks Fast and Easily with the Extending Tube to Get in the Hard to Reach Areas. • Ready to Use – No Mixing Part # Description Size LC-8OZ Leak Check Squeeze Bottle 8 oz. LC-1GAL Leak Check 4 to a case 1 Gallon 8 oz. size Pt # LC-8OZ 1 gal. size Pt # LC-1GAL Maintaining Your Hose (continued)
