KOSCN Scientific's MV301 Manual Diaphragm Valve

The KOSCN Control Valves MV301 Manual Diaphragm Valve is our latest innovation, incorporating a multifunctional adjustment module that integrates ergonomic principles, featuring limit and locking functions. Its new diaphragm coupling and void-free suspension structure, along with a smooth flow path, ensure throughput, delivering superior performance.

Apply for
• Landfill leachate, photovoltaics, printed circuit boards, electroplating
• Glass panels, electronic semiconductors
• Power generation, steel metallurgy, petrochemicals
• Papermaking, chlor-alkali, biopharmaceuticals
• Food and beverages

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MV301 Catalog Manual

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Easy and Convenient Installation and Maintenance

Utilizes numerous clasps and threaded connections for easy assembly and disassembly.
All-plastic exterior design, aesthetically pleasing and corrosion-resistant.
Precise screw fit with minimal gap, smooth operation without the need for maintenance.
All connection types and installation lengths are consistent with international market valves.
Integrated visual position feedback for easy monitoring.
Adjustment module designed for ergonomic operation.
Handwheel features locking grooves every 22.5° for precise control of opening and closing.

High Safety Performance

Diaphragm stop limit design for torque overload protection.
Suspended, air-gap diaphragm coupling mechanism fully protects the diaphragm.
Handwheel adjustment module includes an integrated lock switch for lockout capability.

High Flexibility

Connection types include order, socket, butt weld, and flange.
Interface standards include metric, JIS (Japanese Industrial Standard), and ANSI (American National Standards Institute).
Diaphragm materials: EPDM, FPM, EPDM-PTFE.
Valve body materials: PVC-U, PVC-C, PP-H, PP-Natural, PVDF.
Some products offer an oil-restriction option.

Optimal Flow Performance

Good linear fluid characteristics enable regulation function.
Smooth transitional duckbill channel provides double the flow capacity of traditional diaphragm valves.
Suitable for media containing small particles and solids.

Disassembled Components

NO	Component Names
1	Indicator Rod
2	Handwheel
3	Lead Screw Nut
4	Lead Screw
5	Coupling
6	Diaphragm Pressure Block
7	Valve Seat Cover
8	Diaphragm
9	Valve Seat
10	Port
11	Base

PVC-U Manual Diaphragm Valve
- Union Socket-end

D	DN	GD	D	D1	D2	H	H1	L	L2	L3	M	Z	W	W1	Lift=Hx
20	15	1	65	37	43	73	14	128	96	25	6	90	57	57	7
25	20	1-1/4	65	37	51	81	18	152	114	25	6	108	70	70	10
32	25	1-1/2	87	54	58	115	26	166	122	40	8	116	82	94	15
40	32	2	87	54	72	115	26	192	140	40	8	134	82	94	15
50	40	2-1/4	135	69	83	166	39	222	160	45	8	154	109	122	22
63	50	2-3/4	135	69	100	166	39	266	190	45	8	184	109	122	22

PVC-U Manual Diaphragm Valve
- Flanged Connection

D	DN	D	D1	D2	D3-DIN	D3-JIS	D3-ANSI	D4	H	H1	L	L3	M	W	W1	Lift=Hx
20	15	65	37	95	65	70	60,45	14'16	81	18	145	25	6	70	70	10
25	20	65	37	105	75	75	69,85	14'16	81	18	150	25	6	70	70	10
32	25	87	54	115	85	90	79,25	14'19	115	26	170	40	8	82	94	15
40	32	87	54	140	100	100	88,90	16'19	115	26	180	40	8	82	94	15
50	40	135	69	150	110	105	98,55	16'19	166	39	210	45	8	109	122	23
63	50	135	69	165	125	120	120,65	18'20	166	39	230	45	8	109	122	23
75	65	135	69	185	145	139	139,70	18'20	173	46	245	45	8	109	122	24

PVC-C Manual Diaphragm Valve
- Union Socket-end

D	DN	GD	D	D1	D2	H	H1	L	L2	L3	M	Z	W	W1	Lift=Hx
20	15	1	65	37	43	73	14	128	96	25	6	90	57	57	7
25	20	1-1/4	65	37	51	81	18	152	114	25	6	108	70	70	10
32	25	1-1/2	87	54	58	115	26	166	122	40	8	116	82	94	15
40	32	2	87	54	72	115	26	192	140	40	8	134	82	94	15
50	40	2-1/4	135	69	83	166	39	222	160	45	8	154	109	122	22
63	50	2-3/4	135	69	100	166	39	266	190	45	8	184	109	122	22

PVC-C Manual Diaphragm Valve
- Flanged Connection

D	DN	D	D1	D2	D3-DIN	D3-JIS	D3-ANSI	D4	H	H1	L	L3	M	W	W1	Lift=Hx
20	15	65	37	95	65	70	60,45	14'16	81	18	145	25	6	70	70	10
25	20	65	37	105	75	75	69,85	14'16	81	18	150	25	6	70	70	10
32	25	87	54	115	85	90	79,25	14'19	115	26	170	40	8	82	94	15
40	32	87	54	140	100	100	88,90	16'19	115	26	180	40	8	82	94	15
50	40	135	69	150	110	105	98,55	16'19	166	39	210	45	8	109	122	23
63	50	135	69	165	125	120	120,65	18'20	166	39	230	45	8	109	122	23
75	65	135	69	185	145	139	139,70	18'20	173	46	245	45	8	109	122	24

PP-H Manual Diaphragm Valve
- Union Socket-end

D	DN	GD	D	D1	D2	H	H1	L	L2	L3	M	Z	W	W1	Lift=Hx
20	15	1	65	37	43	73	14	128	96	25	6	90	57	57	7
25	20	1-1/4	65	37	51	81	18	152	114	25	6	108	70	70	10
32	25	1-1/2	87	54	58	115	26	166	122	40	8	116	82	94	15
40	32	2	87	54	72	115	26	192	140	40	8	134	82	94	15
50	40	2-1/4	135	69	83	166	39	222	160	45	8	154	109	122	22
63	50	2-3/4	135	69	100	166	39	266	190	45	8	184	109	122	22

PP-H Manual Diaphragm Valve
- Flanged Connection

D	DN	D	D1	D2	D3-DIN	D3-JIS	D3-ANSI	D4	H	H1	L	L3	M	W	W1	Lift=Hx
20	15	65	37	95	65	70	60,45	14'16	81	18	145	25	6	70	70	10
25	20	65	37	105	75	75	69,85	14'16	81	18	150	25	6	70	70	10
32	25	87	54	115	85	90	79,25	14'19	115	26	170	40	8	82	94	15
40	32	87	54	140	100	100	88,90	16'19	115	26	180	40	8	82	94	15
50	40	135	69	150	110	105	98,55	16'19	166	39	210	45	8	109	122	23
63	50	135	69	165	125	120	120,65	18'20	166	39	230	45	8	109	122	23
75	65	135	69	185	145	139	139,70	18'20	173	46	245	45	8	109	122	24

PP-Natural Manual Diaphragm Valve
- Union Socket-end

D	DN	GD	D	D1	D2	H	H1	L	L2	L3	M	Z	W	W1	Lift=Hx
20	15	1	65	37	43	73	14	128	96	25	6	90	57	57	7
25	20	1-1/4	65	37	51	81	18	152	114	25	6	108	70	70	10
32	25	1-1/2	87	54	58	115	26	166	122	40	8	116	82	94	15
40	32	2	87	54	72	115	26	192	140	40	8	134	82	94	15
50	40	2-1/4	135	69	83	166	39	222	160	45	8	154	109	122	22
63	50	2-3/4	135	69	100	166	39	266	190	45	8	184	109	122	22

PVDF Manual Diaphragm Valve
- Union Socket-end

D	DN	GD	D	D1	D2	H	H1	L	L2	L3	M	Z	W	W1	Lift=Hx
20	15	1	65	37	43	73	14	128	96	25	6	90	57	57	7
25	20	1-1/4	65	37	51	81	18	152	114	25	6	108	70	70	10
32	25	1-1/2	87	54	58	115	26	166	122	40	8	116	82	94	15
40	32	2	87	54	72	115	26	192	140	40	8	134	82	94	15
50	40	2-1/4	135	69	83	166	39	222	160	45	8	154	109	122	22
63	50	2-3/4	135	69	100	166	39	266	190	45	8	184	109	122	22

PVDF Manual Diaphragm Valve
- Flanged Connection

D	DN	D	D1	D2	D3-DIN	D3-JIS	D3-ANSI	D4	H	H1	L	L3	M	W	W1	Lift=Hx
20	15	65	37	95	65	70	60,45	14'16	81	18	145	25	6	70	70	10
25	20	65	37	105	75	75	69,85	14'16	81	18	150	25	6	70	70	10
32	25	87	54	115	85	90	79,25	14'19	115	26	170	40	8	82	94	15
40	32	87	54	140	100	100	88,90	16'19	115	26	180	40	8	82	94	15
50	40	135	69	150	110	105	98,55	16'19	166	39	210	45	8	109	122	23
63	50	135	69	165	125	120	120,65	18'20	166	39	230	45	8	109	122	23
75	65	135	69	185	145	139	139,70	18'20	173	46	245	45	8	109	122	24

Pressure-Temperature Curve

Data is based on pure water media and a safety lifespan of 25 years; application with other media requires reduced temperature and pressure.

Flow Capacity

Data based on pure water media at 20°C and a pressure differential of 1 bar;
Cv = Kv X 0.07
Fv = Kv X 0.0585
Kv (liters/min)
Cv (gallons/min) US
Fv (gallons/min) GB

Relative Flow Linearity Graph

Relative flow linearity coefficient refers to the change in flow rate as a function of the valve opening stroke.

KOSCN

KOSCN Industrial Manufacturing (Shenzhen) Co., Ltd., founded in 2005 and headquartered in Shenzhen, China, operates globally with subsidiaries and agent teams. It offers comprehensive pre-sales and after-sales services worldwide. KOSCN has a professional R&D, design, and production team, adhering strictly to ISO9001, ISO14001, and ISO45001 standards to ensure the highest product quality.

KOSCN's products, mainly automated valves for ultra-pure and corrosive systems, are widely used in semiconductor, glass panel, electroplating, wastewater treatment, waste liquid solidification, solar energy, landfill leachate, PCB, metallurgy, steel, ultra-pure water, recycling, chemical, food and beverage, power, paper, biopharmaceutical, and biofermentation industries.

Download: KOSCN Product Brochure

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