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

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Catalog Manual

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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 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.

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

Flow Performance

Compatible with various materials, the standard 1/2" pipe diameter design ensures a stable flow rate of 125 l/min at 20°C water temperature and 1 bar pressure differential, delivering efficient system operation for all fluid control applications.

Pressure & Temperature Resistance

The product provides stable pressure resistance within a temperature range of 0 to 60°C, with a maximum pressure tolerance of 6 bar. It is designed for a safe service life of 25 years, ensuring long-term reliability.

PP-H / PVC-C Pressure & Temperature Curve

PP-H and PVC-C fittings can withstand pressures up to 6 bar and maintain excellent pressure resistance at temperatures up to approximately 80°C, making them suitable for high-temperature or demanding fluid applications.

PVDF High-Temperature Pressure Resistance

PVDF fittings offer outstanding high-temperature performance, remaining pressure-resistant in environments up to 140°C. Ideal for fluid systems requiring high temperature and chemical resistance.

Control Pressure Range

The control system supports a maximum air input pressure of 6 bar. Different actuator types (NC, NO, DA) correspond to specific pressure ranges, ensuring stable, safe, and precise operation.

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.