The flow-directing mechanism, in the valve, has the functions of flow-guiding and pressure-stabilizing.'In the corner of pipe, the water hammer is the most obvious. The design is for meeting the
requirement and set the arrestor at the corner directly. This design not only saves the space and is easy to set up, and also can replace the traditional crooked head to reduce the cost of setting
up.'L style has the double way water-hammer-absorbing and has excellent results. 'Patent Number : 131907