Butterfly Valves Questions
Product information
- Tell me the difference between the aluminum butterfly valves for hot water supply and water supply.
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The seat rubber is different for hot water supply and water supply.
We recommend the butterfly valve with EPDM seat for water supply when using it for water supply piping and that with FKM seat for hot water supply when using it for hot water supply piping.
Piping condition
- Is it possible to connect stainless steel piping to an aluminum butterfly valve?
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An aluminum butterfly valve can be used with stainless steel piping.
The parts that come into contact with the fluid are only the disc and the rubber seat, but the disc does not come into contact with the piping and the rubber seat that comes into contact with the piping does not conduct electricity. Therefore, dissimilar metal corrosion does not occur.
- When installing a butterfly valve, what length of bolts / nuts for piping should be used?
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The required dimensions of hexagon bolts / nuts for piping of butterfly valves are introduced in the catalog. Please refer to it. In addition, the bolts / nuts for piping are not attached to the product.
(General Catalog, Digest Version / Butterfly Valve General Catalog)
- When installing a butterfly valve, are gaskets for piping necessary?
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For the product whose seat material is rubber (seat rubber), the rubber seat (seat rubber) also plays the role of piping gaskets. Therefore, piping gaskets are not required.
For the product whose seat material is not rubber (seat rubber), piping gaskets are required. Since the types / dimensions of gaskets that can be used may be limited, please refer to the instruction manual / catalog of the product.
(Butterfly Valve General Catalog)
- Do you have a piping compatibility table for butterfly valves?
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For the piping compatibility table for butterfly valves, please refer to the “General Catalog, Digest Version” and “Butterfly Valve General Catalog”.
(Butterfly Valve General Catalog)
Vacuum condition
- Tell me the series of butterfly valves according to the degree of vacuum.
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Butterfly valves can be used based on the degree of vacuum shown in the table below as a guide.
