Diaphragm Valves

NDV's representative product, the diaphragm valves, are superior in "air-tightness," "maintenance," and "corrosion and chemical resistance."
Since it can be configured by selecting from a wide range of materials according to fluid and usage conditions, it is applicable to a wide range of fields and has excellent cost performance.
Based on our extensive experience and achievements cultivated over our long history, we provide high-quality, high-performance and reliable products.

Structure and features of diaphragm valves

Diaphragm valves are our main products with excellent "airtightness," "cleanability," "maintainability," and "corrosion and chemical resistance." It can be used in a wide range of applications, including chemical and water treatment plants.

Weir type diaphragm valves (400 type)

The basic type of diaphragm valves with weir in the flow path. The optimal product from a wide range of lineups to suit the user's usage conditions can be selected.

Straight type diaphragm valves (500 type)

Diaphragm valves whose flow path is nearly straight, with little pressure loss and liquid pools. Suitable for fluids such as viscous fluids and slurry.

Lined diaphragm valves with excellent corrosion and chemical resistance

We offer the valve body with the most suitable lining for corrosive fluid countermeasures, crevice corrosion countermeasures, and metal ion elution countermeasures.

Special-use products and related products

Our strength is that we can respond to the needs of various customers by the custom-made production method. We introduce special-purpose products and related products.