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KOSCN Scientific MV300 Pneumatic Diaphragm Valve

The KOSCN Control Valves MV300 is an economical diaphragm valve featuring a compact, integrated pneumatic actuation structure. Its unique duckbill flow path design ensures optimal flow capacity. With corrosion resistance in mind, we offer a variety of material options to guarantee a high cost-performance ratio for diverse applications.

Apply for
•Chemical dosing, electronics industry
•semiconductor industry
•photovoltaics
•integrated circuit boards, water treatment
•ion recovery
 

Catalogue

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Convenience and Maintenance

Convenience and Maintenance

  • Integrated compact design ensures installation in limited spaces.
  • All-plastic exterior with no exposed metal parts or bolts, offering an aesthetic and corrosion-resistant finish.
  • Diaphragm embedded design for even stress distribution, extending lifespan.
  • Superior lubrication performance, maintenance-free.
  • G thread double regulation, ensuring consistent installation length with international market valves.
  • Integrated visual position feedback, easy to monitor.
  • Laser-engraved text and numbers for clear, long-lasting identification.
     

High Safety Performance

  • Valve body and pneumatic actuator designed with overpressure margin for guaranteed safety.
  • Available in multiple materials to withstand high temperatures and corrosion.
  • Optimized curvature ensures effective valve closure in high-flow applications.
  • High-temperature resistant diaphragm stopper for improved sealing performance.
High Safety Performance
High Flexibility

High Flexibility

  • Actuators available in NC, NO, DA options.
  • Diaphragms in EPDM, FPM, PTFE, suitable for water, acids, and alkaline mediums.
  • Valve body materials include PVC-U, CPVC, PP-H, PVDF.
  • Connection standards available in metric, US, and JIS.
  • High quality and reliability, capable of high operation frequency.
     

Optimal Flow Performance

  • Excellent linear fluid characteristics for simple control.
  • Smooth transition duckbill passage, achieving double the flow capacity of traditional diaphragm valves.
  • Suitable for mediums containing small particles and solids.
     
Optimal Flow Performance

Disassembled Components and Material Structure Selection

NO Part Names
 Materials
1 Cylinder Head
2 Piston
3 Intake Nozzle
 NC、NO、DA
4 Cylinder Head Support Block
5 Diaphragm Pressure Block
6 Diaphragm Sheet
 EPDM、FPM、PTFE
7 Valve Body
 PVC-U、CPVC、PP-H、PVDF
8 NC Spring
 NC Spring
9 NC Spring
 NC Spring
10 Valve Position Indicator Valve Position Indicator

Size

NO Size(mm) NO Size(mm)
D 57 L 198
 D1_G 1/4 L1 130
D2 46 L2 25
H 89 M 6
H1 14 Z
 89
H2 46 W 57
H3 30 W1 57
H4 39 Lift=Hx
 6

How to Order

Please consult the table below based on your requirements for valve body material, air inlet mechanism, applicable pipe diameter, pressure, etc., and click on the product name. This will take you to the product number list. Refer to the product number list for the product number you wish to inquire about and inform your sales representative during the inquiry process.
Body PVC-U Actuator variant NC
Size d (mm) 20

DN (mm)
 15

DN (Inch) 1/2
Pressure range
 PN (bar)
 6


Diaphragm
 Sealing Ident No.
Connection
 PVC-U EPDM
 EPDM 300.012.1200

Socket DIN EPDM-PER
 EPDM 300.022.1200

FPM
 FPM 300.032.1200

  FPM-70
 FPM 300.042.1200

  PTFE
 FPM 300.062.1200

PVC-U EPDM
 EPDM 300.012.1200

Socket JIS EPDM-PER
 EPDM 300.022.1200

  FPM
 FPM 300.032.1200

  FPM-70
 FPM 300.042.1200

  PTFE
 FPM 300.062.1200

PVC-U EPDM
 EPDM 300.012.1200

Socket ANSI EPDM-PER
 EPDM 300.022.1200

  FPM
 FPM 300.032.1200

  FPM-70
 FPM 300.042.1200

  PTFE
 FPM 300.062.1200
Body PVC-U Actuator variant NO
Size d (mm) 20

DN (mm)
 15

DN (Inch) 1/2
Pressure range
 PN (bar)
 6


Diaphragm
 Sealing Ident No.
Connection
 PVC-U EPDM
 EPDM 300.014.1200

Socket DIN EPDM-PER
 EPDM 300.024.1200

FPM
 FPM 300.034.1200

  FPM-70
 FPM 300.044.1200

  PTFE
 FPM 300.064.1200

PVC-U EPDM
 EPDM 300.014.1200

Socket JIS EPDM-PER
 EPDM 300.024.1200

  FPM
 FPM 300.034.1200

  FPM-70
 FPM 300.044.1200

  PTFE
 FPM 300.064.1200

PVC-U EPDM
 EPDM 300.014.1200

Socket ANSI EPDM-PER
 EPDM 300.024.1200

  FPM
 FPM 300.034.1200

  FPM-70
 FPM 300.044.1200

  PTFE
 FPM 300.064.1200
Body PVC-U Actuator variant DA
Size d (mm) 20

DN (mm)
 15

DN (Inch) 1/2
Pressure range
 PN (bar)
 6


Diaphragm
 Sealing Ident No.
Connection
 PVC-U EPDM
 EPDM 300.016.1200

Socket DIN EPDM-PER
 EPDM 300.026.1200

FPM
 FPM 300.036.1200

  FPM-70
 FPM 300.046.1200

  PTFE
 FPM 300.066.1200

PVC-U EPDM
 EPDM 300.016.1200

Socket JIS EPDM-PER
 EPDM 300.026.1200

  FPM
 FPM 300.036.1200

  FPM-70
 FPM 300.046.1200

  PTFE
 FPM 300.066.1200

PVC-U EPDM
 EPDM 300.016.1200

Socket ANSI EPDM-PER
 EPDM 300.026.1200

  FPM
 FPM 300.036.1200

  FPM-70
 FPM 300.046.1200

  PTFE
 FPM 300.066.1200
Body CPVC Actuator variant NC
Size d (mm) 20

DN (mm)
 15

DN (Inch) 1/2
Pressure range
 PN (bar)
 6


Diaphragm
 Sealing Ident No.
Connection
 PVC-U EPDM
 EPDM 300.212.1200

Socket DIN EPDM-PER
 EPDM 300.222.1200

FPM
 FPM 300.232.1200

  FPM-70
 FPM 300.242.1200

  PTFE
 FPM 300.262.1200

PVC-U EPDM
 EPDM 300.212.1200

Socket JIS EPDM-PER
 EPDM 300.222.1200

  FPM
 FPM 300.232.1200

  FPM-70
 FPM 300.242.1200

  PTFE
 FPM 300.262.1200

PVC-U EPDM
 EPDM 300.212.1200

Socket ANSI EPDM-PER
 EPDM 300.222.1200

  FPM
 FPM 300.232.1200

  FPM-70
 FPM 300.242.1200

  PTFE
 FPM 300.262.1200
Body CPVC Actuator variant NO
Size d (mm) 20

DN (mm)
 15

DN (Inch) 1/2
Pressure range
 PN (bar)
 6


Diaphragm
 Sealing Ident No.
Connection
 PVC-U EPDM
 EPDM 300.214.1200

Socket DIN EPDM-PER
 EPDM 300.224.1200

FPM
 FPM 300.234.1200

  FPM-70
 FPM 300.244.1200

  PTFE
 FPM 300.264.1200

PVC-U EPDM
 EPDM 300.214.1200

Socket JIS EPDM-PER
 EPDM 300.224.1200

  FPM
 FPM 300.234.1200

  FPM-70
 FPM 300.244.1200

  PTFE
 FPM 300.264.1200

PVC-U EPDM
 EPDM 300.214.1200

Socket ANSI EPDM-PER
 EPDM 300.224.1200

  FPM
 FPM 300.234.1200

  FPM-70
 FPM 300.244.1200

  PTFE
 FPM 300.264.1200
Body CPVC Actuator variant DA
Size d (mm) 20

DN (mm)
 15

DN (Inch) 1/2
Pressure range
 PN (bar)
 6


Diaphragm
 Sealing Ident No.
Connection
 PVC-U EPDM
 EPDM 300.216.1200

Socket DIN EPDM-PER
 EPDM 300.226.1200

FPM
 FPM 300.236.1200

  FPM-70
 FPM 300.246.1200

  PTFE
 FPM 300.266.1200

PVC-U EPDM
 EPDM 300.216.1200

Socket JIS EPDM-PER
 EPDM 300.226.1200

  FPM
 FPM 300.236.1200

  FPM-70
 FPM 300.246.1200

  PTFE
 FPM 300.266.1200

PVC-U EPDM
 EPDM 300.216.1200

Socket ANSI EPDM-PER
 EPDM 300.226.1200

  FPM
 FPM 300.236.1200

  FPM-70
 FPM 300.246.1200

  PTFE
 FPM 300.266.1200
Body PP-H Actuator variant NC
Size d (mm) 20

DN (mm)
 15

DN (Inch) 1/2
Pressure range
 PN (bar)
 6


Diaphragm
 Sealing Ident No.
Connection
 PP-H EPDM
 EPDM 300.412.1200

Socket DIN EPDM-PER
 EPDM 300.422.1200

FPM
 FPM 300.432.1200

  FPM-70
 FPM 300.442.1200

  PTFE
 EPDM 300.452.1200

  PTFE
 FPM 300.462.1200

PP-H EPDM
 EPDM 300.412.1200

Spigot DIN EPDM-PER
 EPDM 300.422.1200

  FPM
 FPM 300.432.1200

  FPM-70
 FPM 300.442.1200

  PTFE
 EPDM 300.452.1200

  PTFE
 FPM 300.462.1200
Body PP-H Actuator variant NO
Size d (mm) 20

DN (mm)
 15

DN (Inch) 1/2
Pressure range
 PN (bar)
 6


Diaphragm
 Sealing Ident No.
Connection
 PP-H EPDM
 EPDM 300.414.1200

Socket DIN EPDM-PER
 EPDM 300.424.1200

FPM
 FPM 300.434.1200

  FPM-70
 FPM 300.444.1200

  PTFE
 EPDM 300.454.1200

  PTFE
 FPM 300.464.1200

PP-H EPDM
 EPDM 300.414.1200

Spigot DIN EPDM-PER
 EPDM 300.424.1200

  FPM
 FPM 300.434.1200

  FPM-70
 FPM 300.444.1200

  PTFE
 EPDM 300.454.1200

  PTFE
 FPM 300.464.1200
Body PP-H Actuator variant DA
Size d (mm) 20

DN (mm)
 15

DN (Inch) 1/2
Pressure range
 PN (bar)
 6


Diaphragm
 Sealing Ident No.
Connection
 PP-H EPDM
 EPDM 300.416.1200

Socket DIN EPDM-PER
 EPDM 300.426.1200

FPM
 FPM 300.436.1200

  FPM-70
 FPM 300.446.1200

  PTFE
 EPDM 300.456.1200

  PTFE
 FPM 300.466.1200

PP-H EPDM
 EPDM 300.416.1200

Spigot DIN EPDM-PER
 EPDM 300.426.1200

  FPM
 FPM 300.436.1200

  FPM-70
 FPM 300.446.1200

  PTFE
 EPDM 300.456.1200

  PTFE
 FPM 300.466.1200
Body PVDF Actuator variant NC
Size d (mm) 20

DN (mm)
 15

DN (Inch) 1/2
Pressure range
 PN (bar)
 6


Diaphragm
 Sealing Ident No.
Connection
 PVDF FPM
 FPM 300.632.1200

Socket DIN FPM-70
 FPM 300.642.1200

PTFE
 FPM 300.662.1200

PVDF EPDM
 EPDM 300.612.1200

 Spigot DIN EPDM-PER
 EPDM 300.622.1200

  FPM
 FPM 300.632.1200

  FPM-70
 FPM 300.642.1200


PTFE
 EPDM 300.652.1200

  PTFE
 FPM 300.662.1200
Body PVDF Actuator variant NO
Size d (mm) 20

DN (mm)
 15

DN (Inch) 1/2
Pressure range
 PN (bar)
 6


Diaphragm
 Sealing Ident No.
Connection
 PVDF FPM
 FPM 300.634.1200

Socket DIN FPM-70
 FPM 300.644.1200

PTFE
 FPM 300.664.1200

PVDF EPDM
 EPDM 300.614.1200

 Spigot DIN EPDM-PER
 EPDM 300.624.1200

  FPM
 FPM 300.634.1200

  FPM-70
 FPM 300.644.1200


PTFE
 EPDM 300.654.1200

  PTFE
 FPM 300.664.1200
Body PVDF Actuator variant DA
Size d (mm) 20

DN (mm)
 15

DN (Inch) 1/2
Pressure range
 PN (bar)
 6


Diaphragm
 Sealing Ident No.
Connection
 PVDF FPM
 FPM 300.636.1200

Socket DIN FPM-70
 FPM 300.646.1200

PTFE
 FPM 300.666.1200

PVDF EPDM
 EPDM 300.616.1200

 Spigot DIN EPDM-PER
 EPDM 300.626.1200

  FPM
 FPM 300.636.1200

  FPM-70
 FPM 300.646.1200


PTFE
 EPDM 300.656.1200

  PTFE
 FPM 300.666.1200

KOSCN

Founded in 2005 and headquartered at the forefront of China's reform and opening-up in Shenzhen, KOSCN Industrial Manufacturing (Shenzhen) Co., Ltd. has expanded its presence with subsidiaries and offices in Suzhou, Chengdu, Changsha, Hong Kong, and even overseas in Germany. With a robust network of pre-sales and after-sales agency teams spread across China and abroad, KOSCN stands as a global enterprise specializing in the manufacture of fluid control products for ultra-pure and corrosive systems, including automation valves and instrumentation.

Holding numerous patents, KOSCN is recognized as a high-tech and specialized enterprise. Its products are widely used across various sectors, including semiconductors, glass panels, electroplating, wastewater treatment, waste fluid solidification, photovoltaics, leachate from landfills, circuit boards, metallurgy, steel, ultra-wastewater, recycling, chemical, food and beverage, power, paper, biopharmaceuticals, and bio-fermentation.

As a system supplier offering countless solutions across a broad spectrum of industries, KOSCN boasts a professional team that covers every aspect from research and development to design, from quality assurance to production, and from mold making to injection molding. Adhering to ISO9001, ISO140001, and ISO45001 standards, KOSCN commits to quality, environmental sustainability, and health, ensuring high-end product quality for modern production methods.

KOSCN
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