Nippon Daiya Valve Co., Ltd. Official site

Optimal for pharmaceuticals, bioprocesses, and more! We provide extensive information about bio-clean diaphragm valves!!

For more details, please refer to the catalog (P8-15) or feel free to contact us. (The English and Chinese versions of the catalog can be downloaded from the catalog page of the special website below.)

We offer valve body specifications with stainless steel bodies and lined bodies!

【Stainless Steel Body - List of Manufactured Bodies (Excerpt)】 <Stainless Steel Cast Steel> ■Main Material: SCS16 ■Material Code Number: 13 ■Ferrule (Nominal Diameter [DN]): 8 to 50 *For more details, please refer to the catalog (P10-11) or feel free to contact us. (The English and Chinese versions of the catalog can be downloaded from the catalog page of the special website below.)

We offer various handle specifications! We can accommodate your requests, including rapid open/close types, those with lock nuts, and those with opening degree indicators.

【Other Features】 ■BQL400N Type - Stable closing performance can be achieved with easy operation (maximum closing differential pressure 0.6MPa) - The opening and closing status of the valve can be reliably identified from a distance based on the handle position - Long lifespan is expected without imposing excessive load on the diaphragm *For more details, please refer to the catalog (P12) leaflet or feel free to contact us. (English and Chinese versions are available upon request!)

Prevents the generation of foreign substances due to coating peeling! Air-operated ON-OFF valve made of stainless steel with excellent corrosion resistance. Compact and buff-polished for excellent cleanability.

【Specifications (Excerpt)】 ■Model: BPO (BPC, BPN) 1400N Type ■Drive Unit Model: 05S/07S/09S/12S/16S ■Operation Method ・Single Acting: Reverse Acting BPO (Spring Closed/Pressure Open), Direct Acting BPC (Spring Open/Pressure Closed) ・Double Acting: BPN (No Spring, Pressure Open/Pressure Closed) ■Applicable Nominal Diameter (DN): 8 to 50 ■Drive Unit Material ・Cylinder: SCS13 #300 Buff Polished ・Bonnet: SCS13 #200 Buff Polished or Precision Cast Surface *For more details, please refer to the catalog (P15-16) or feel free to contact us. (English version, Chinese version available upon request!)

A product series designed with a valve body structure that is compact and free of dead spaces (such as pockets and liquid pools)!

For more details, please refer to pages 17 to 21 of the catalog or feel free to contact us. (The English and Chinese versions of the catalog can be downloaded from the catalog page of the special website below.)

An evolved version of the bio-clean diaphragm valve. The structure eliminates liquid pooling by positioning the valve shaft horizontally. A solution for dead space!

For more details, please refer to the PDF materials or feel free to contact us. (The English and Chinese versions of the catalog can be downloaded from the catalog page of the special site below.)

No dead space (in pockets or liquid traps), fluid sampling is OK. Can be used widely!!

For more details, please refer to the PDF document or feel free to contact us.

No short pipe section and minimal dead leg! A compact design sample collection valve.

【Specifications】 ◎ Valve nominal diameter (A): 25–50 (1S–2S) ◎ Main pipe nominal diameter (A): 25–100 (1S–4S) ◎ Connection method 　Standard: Clamp joint (ferrule), welded joint (Astro [TIG] welding) 　Others: Please consult us for JIS 10K flanges, etc. ◎ Maximum operating pressure: 1.0 MPa ◎ Temperature range: -20℃ to 151℃ ◎ Main material 　Body: SUS316L 　Diaphragm: NEW PTFE/EPDM (code: TX/CE), NEW PTFE/EPDM+α (code: TX/CX) ◎ Operation method 　Manual operation: Handwheel type (aluminum, stainless steel) 　Automatic operation: Pneumatic operation reverse action type (PO), forward action type (PC), double action type (PN) 　　　　　　Options: Opening limit, dedicated limit switch box ◎ Body surface finish 　Internal and external #400 buff polishing (code: B1) 　Internal and external #400 buff polishing followed by internal electropolishing (code: E1) *For more details, please refer to the documentation. Feel free to contact us with any inquiries.

Diverting, merging, and the introduction and discharge of cleaning water and sterilizing steam are "applicable." The internal structure of the valve has no dead space, making it ideal for preventing liquid accumulation.

For more details, please refer to the catalog (P.20) or feel free to contact us. (We have an English version available if needed!)

Tanks from approximately 10L to 10,000L are acceptable! The opening and closing are done solely by the diaphragm, allowing for smooth discharge of the tank contents with almost no residue left.

*For more details, please refer to the PDF document or feel free to contact us. (The English and Chinese versions of the catalog can be downloaded from the catalog page of the special website below.)

Easy with 90-degree operation! Prevents over-tightening and damage! We solve concerns like "I'm worried if it's securely tightened..."

【Specifications】 ■Main body material: SUS316L and others ■Diaphragm: NEW PTFE/EPDM, NEW PTFE/EPDM + @ ■Connection standards: Ferrule and others *For more details, please refer to the PDF materials or feel free to contact us. (The English and Chinese versions of the catalog can be downloaded from the catalog page of the special site.)

Clamp, welding, and various flange-compatible steam trap replacement valves.

【Comparison by Usage Example】 <Valve for Replacing Steam Traps> ■ No need for bypass piping ■ Reduces opportunities for contamination with a simple structure ■ Maintenance is easy with the use of diaphragm valves <Conventional Steam Trap> ■ Piping becomes complicated due to the installation of the steam trap *For more details, please refer to the PDF document or feel free to contact us.

No adhesion of tablets or powder particles, excellent cleaning properties!

【Specifications】 <Damper> ◎Model: DC507D ◎Nominal Diameter (DN): 150 (6.5S) ◎Connection Standard: Ferrule Joint (in accordance with ISO/IDF) <Butterfly Valve> ◎Model: DC507C-SI ◎Nominal Diameter (DN): 100 to 300 ◎Seat Tightness: 3 kPa ◎Body Pressure Resistance: 0.05 MPa ◎Operating Temperature: Room Temperature (can be washed with hot water up to 80℃) ◎Connection Standard: Ferrule Joint DN100 (4.5S), 125 (5.5S), 150 (6.5S), 200: (in accordance with ISO/IDF) DN250/300 (to be discussed) *For more details, please refer to the catalog. Feel free to contact us for inquiries. (An English version is available upon request!)