Incorrect Correct Gates Corporation Figure 8-28. Be certain hoses are installed without twists. Hoses will tend to straighten (unwind) under pressure, placing considerable stress on the internal structure of the hose. Goodheart-Willcox Publisher Figure 8-29. When installing hose, the careful selection of fittings will produce a less-cluttered appearance, decrease hose stress, and reduce the amount of hose used for the installation. Copyright Goodheart-Willcox Co., Inc. 200 Fluid Power the constant twisting caused by this tendency to straighten under pressure can result in separation of the hose reinforcement and lead to hose failure. Hose fi ttings, elbows, and angle adapters should be used to relieve the strain on hose assemblies and maintain as neat and uncluttered of an appearance as possible. See Figure 8-29. Also, use standoff brackets wherever hoses must pass close to hot machine parts. These brackets hold the hoses away from the hot parts to allow air circulation. Direct contact with hot parts can shorten the service life of a hose. Clamps should be used to support long hose runs. This is especially true when there is a possibility of abrasive damage from the hose being rubbed by mov- ing machine members. Do not clamp high- and low- pressure hoses together. Also, do not clamp a hose at a bend. Pressure variations can cause hose movement resulting in damage to the hose.