Nippon Daiya Valve offers ball, butterfly, and other valves in addition to our main product, the diaphragm valve, that meet the various needs of our customers with highly efficient, safe, and environmentally considerate products. Our valves are used across a broad range from chemical, environmental and water treatment services, iron and steel, medical, and power industries and sectors.

Nippon Daiya Valve​ Diaphragm Valve

Feature

1) Standard diaphragm valve with a weir in the flow path.
2) With built-in diaphragm (membrane) to partition fluids, and the superior sealing structure prevents contamination to fluids.
3) A simple structure with three units: the "actuator," "diaphragm," and "body." The top entry system makes it easy to perform maintenance such as replacement of the diaphragm.
4) The most suitable materials for the body and diaphragm can be chosen to match the fluid composition, for a cost efficience, corrosion and chemically resistance.
5) Choose an actuator that meets your requirements. Applies to manually operated, pneumatically operated, flow controlling, and electrically operated types.

usage
Chemical, environment/water treatment, iron and steel, ship, semiconductor, power including nuclear power, and other sectors.

Feature

1) A diaphragm valve where the flow path is nearly straight, with little pressure loss and deposit of fluid.
2) Suited for viscous fluids, dietary fibrous fluids, slurries, sludges, and fluids that contain floating solid matter.
3) Choose an actuator that meets your requirements. Applies to manually operated, pneumatically operated, and electrically operated types.

usage
Water purification plants, sewage treatment plants, etc.

Feature

1) In addition to cast iron, and cast stainless steel, the valve body is manufactured with the optimal lining for resistance to crevice corrosion, corrosive fluids, metal ion elutions, etc.
2) Choose from our extensive line-up at a reasonable price to meet your requirements.
3) Standard line-up: rubber lining (hard natural rubber, soft natural rubber, chloroprene rubber, butyl rubber)
　 　　　　　　　　　　: fluorocarbon resin lining (PFA, ETFE)
　 　　　　　　　　　　: glass lining, porcelain lining (ceramic)
[NOTES]
*Straight type diaphragm valves (500 series) are only manufactured with rubber lining (note that the valves are not manufactured with fluorocarbon resin, glass, nor porcelain).
*Customers must choose materials to match their purpose. Those considering purchases should refer to the catalogue or contact our sales division.

Feature

1) Diaphragms are generally classified by two categories: rubber or fluorocarbon resin.
2) Choose from our extensive line-up at a reasonable price to meet your requirements.
3) Standard line-up: rubber base (natural rubber, chloroprene rubber, butyl rubber, nitrile rubber, EPDM)
　　　　　　　　 　: fluorocarbon resin base (seat surface: NEW PTFE/cushion rubber: EPDM)
[NOTES]
*Straight type diaphragms (500 series) are only manufactured rubber one (note that the fluorocarbon resin diaphragms are not manufactured.).
*Customers must choose materials to match their purpose. Those considering purchases should refer to the catalogue or contact our sales division.

Feature

Built-to-order, Our advantage is to meet the needs of many customers.
For example, manufacturing valves with a large bore specialy shaped bodies, valves developed for nuclear power plants, and rubber lined check valves with high quality of lining skill . Feel free to contact us with special requests for a certain kind of diaphragm valve or special types of fluids.

Nippon Daiya Valve​ Ball Valve

Feature

1) NDV's general-purpose standard ball valve.
2) Fire Safe type: In the case sealing parts such as the seats or packings are destroyed by a fire etc., it can prevent considerable leakage of fluids.
3) Stem Guard Mechanism: Can prevent stems from blowing out due to excessive fluid pressure.
4) Antistatic Mechanism: Can prevent the build up of static electricity within the valve due to the friction between the ball and seat.
5) The standard seat is made of NEW PTFE. Other seats are made from various enhanced materials or have reinforced inner/outer bores. NDV has a selection of seat materials to meet your requirements.
6) Choose an actuator that meets your requirements. Applies to manually operated, pneumatically operated, flow controlling, and electrically operated types.

usage
Chemical, environment/water treatment, iron and steel, ship, semiconductor, food, power industry and other secotor

Feature

1) Jacketed ball valves are valves built with a jacket that forms a second layer covering the body. The purpose of this jacket is to supply hot water or steam through it to heat up the fluid in the valve body (also used for cooling purposes). Applies mainly to fluids that coagulate at room temperature.
2) The extended gland type mainly applies to cases where insulation material is attached to the piping. Because the stem is extended, it is easy to work with and to tighten up the gland packing.
3) Choose an actuator that meets your requirements. Applies to manually operated, pneumatically operated, and electrically operated types.

Feature

1) The V-shaped cut opening of the hemispherical ball makes smooth operation by cutting fibers and solid bodies and also excellent fluid control capabilities.
2) This valve has seat at only inlet side to minimize the jamming of solids.
3) Choose an actuator that meets your requirements. Applies to manually operated, pneumatically operated, flow controlling, and electrically operated types.

usage
Paper mill factories (pulp fluids etc.), slurries (iron oxide, muddy water, lime milk etc.), powders (fly ash and resin pellets such as nylon ), and highly viscous fluid lines.

Feature

1) The Valve has 3 dirction flow path, used for switchover, distribution, and mixing. It has cost merit and space saving compared with using many 2-way ball valves.
2) The L-port type, for the switchover of fluids, and the T-port type, for switching distribution and mixing of fluids are also available.
3) Choose an actuator that meets your requirements. Applies to manually operated, pneumatically operated, and electrically operated types.


usage
Chemical, environment/water treatment, iron and steel, ship, semiconductor, food, power industry, and other sectors.

Feature

1) Compared with the 90 degree angle of general 3-way ball valves, the Y-shaped 3-way ball valve has a wide angle of 135 degrees. It is useable for fluid of low fluidity such as powers or slurries, pipe cleaning pigs, and passing spheres.
2) There are two types of flanges, the straight type or curved type with a 22.5 degree. Combine these two flanges at the three ports for any one of a possible 54 piping patterns for best solution for your purpose.
3) Choose an actuator that meets your requirements. Applies to manually operated, pneumatically operated, and electrically operated types.

usage
For solid material such as Powders, slurries, pellets or for shield machine use.

Feature

NDV takes orders for large bore or high pressure ball valves. We also extensively offer step operation which allows certain amounts of fluids to pass in a 2 staged open/close type, hydraulically operated valves for shield machine, and top entry types developed for nuclear power plants.

Nippon Daiya Valve​ Butterfly Valve

Feature

1) The axis has double eccentric structure.(double off-center). This makes somooth valve operation possible avoiding heavily straining or rubbing the seat.
2) High performaces of "sealing," "operation," "flow characteristic" and the short face to face dimension make for easy piping.
3) Choose an actuator that meets your requirements. Applies to manually operated, pneumatically operated, flow controlling, and electrically operated types.

usage
Chemical, environment/water treatment, ship, flow volume regulation, etc.

Feature

1) All parts in contact with fluids are PFA fitted butterfly valves. Superior resistance to corrosion and chemicals.
2) Choose an actuator that meets your requirements. Applies to manually operated, pneumatically operated, flow controlling, and electrically operated types.

usage
Chemical, environment/water treatment, iron and steel, etc.

Nippon Daiya Valve​ Sanitary Valve

Nippon Daiya Valve Bioclean Diaphragm Valve: B400 Series

Nippon Daiya Valve Superior Anti-Dead Space Products

Valves with Corrosion Resistant Clamp/Flange Joints

Diaphragm with Sanitary Specifications

Combined Valves and Other Special Purpose Bioclean Diaphragm Valves

For Powder and Granular Emissions: Sanitary Type Butterfly Valve

Nippon Daiya Valve Ultrahigh Airtight Damper with Zero Leakage