Installation Manual - Future Pipe Industries

10.4. Valves
To avoid Wavistrong pipes being overstressed by bending, valves, butterfly valves or other heavy accessories must
be supported separately. This can be done by direct support of the valve or indirectly by means of the flange bolts.
Fig. 10.4.a.
If a Wavistrong flange is connected to a steel flange, the support should preferably be situated at the side of the steel
flange. This is also aplicable for underground applications. Pipe sections should not become overloaded by the weight
of the accessories, for example by soil settlement. One suggestion would be concrete supports provided with steel
connections, able to carry the full load of the valve. Also bending and torque forces caused by opening and closing
of valves should be absorbed.Hand operated butterfly valves can be supported or mounted in a manhole as follows:
Fig. 10.4.b.
butterfly valve
concrete wall
butterfly valve
support
Wavistrong Installation Manual
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steel
support
concrete
foundation
water baffle