For ease of installation, insert all flange bolts through the valve flange and then through the sleeve flange, but do not let the bolts extend beyond the surface of the flangerubber (See Figure 4).
Note: You may increase the torque on the rubber sleeve up to two times the specified value without causing sleeve or flange damage.
注意：在橡胶套管上增加的扭矩可以达到规定扭矩值的两倍，在此时仍然不会对套管或法兰造成损害。
3
CAUTION: Do not use any sharp tools such as a crowbar or screwdriver on the rubber during installation. Sharp instruments can damage the flange face and cause possible leakage.