- Newton Handling Instructions of Bellows Seal Valve
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Points to be checked before operation
①The valve needs to be closed with sufficient strength applied to the handle in order to keep the tightness of the valve seat. However, do not forcedly turn the handle with a wrench or jig since manual operation is sufficient. Similarly, when using a supplementary handle etc, do not forcedly turn it.
②The PTFE disc has high sealing characteristics, and is suitable for liquids containing gaseous body or scales. However, pay particular attention not to forcedly close the disc as it is made of soft resin and can easily be damaged.
③Check that the bolts/nuts are not loose.
Precaution for use
①Do not apply higher pressure than the maximum allowable working pressure.
②Avoid impact pressure such as by the water hammer.
③Do not let liquid inside the pipe freeze.
④Do not use corrosive liquids.
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