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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Catalogue

즉시 문의

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

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
Body PVC-U Actuator variant NO
Body PVC-U Actuator variant DA
Body CPVC Actuator variant NC
Body CPVC Actuator variant NO
Body CPVC Actuator variant DA
Body PP-H Actuator variant NC
Body PP-H Actuator variant NO
Body PP-H Actuator variant DA
Body PVDF Actuator variant NC
Body PVDF Actuator variant NO
Body PVDF Actuator variant DA

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.