Rubber Flap Check Valve

Yaxing is a professional and reliable manufacturer of Rubber Flap Check Valves. This type of automatic valves utilize the deformation of a flexible rubber flap to enable one-way flow control, primarily preventing pipeline medium backflow.

The key component is a corrosion-resistant rubber valve flap, while the valve body is typically made of cast iron or other materials, making it suitable for various complex working conditions.

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Product Description

Working Principle of Rubber Flap Check Valves

Technical Parameter

Part & Materials

No	Part	Material
1	Body	Ductile Iron GGG50
2	Gasket	EPDM
3	Cover	Ductile Iron GGG50
4	Disc	CS/DI +EPDM
5	Bolts	A2-70
6	Plug	Carbon Steel

Dimensions(mm)

DN	L	D		C		B		n-d		b		f	H
		PN10	PN16	PN10	PN16	PN10	PN16	PN10	PN16	PN10	PN16
DN50	203	165		125		99		4-19		19		3	82
DN65	216	185		145		119		4-19		19		3	93
DN80	241	200		160		133		8-19		19		3	200
DN100	292	220		180		154		8-19		19		3	110
DN125	330	250		210		184		8-19		19		3	125
DN150	356	285		240		210		8-23		19		3	143
DN200	495	340		295		265		8-23	12-23	20		3	170
DN250	622	405		350	355	319		12-23	12-28	22		3	203
DN300	698	460		400	410	370		12-23	12-28	24.5		4	230
DN350	787	520		460	470	429		16-23	16-28	26.5		4	260
DN400	914	580		515	525	480		16-28	16-31	28		4	290
DN450	978	640		565	585	530	548	20-28	20-31	30		4	320
DN500	978	715		620	650	582	609	20-28	20-34	31.5		4	358
DN600	1295	840		725	770	682	720	20-31	20-37	36		5	420

Technical Data

No	Description	Specification
1	Nominal Dia	DN50-DN600
2	Nominal Pressure	PN10&PN16
3	Valve Design Standard	BS5153
4	Face to Face Standard	EN558&ISO5752 Series-10
5	Flange Standard Conformity	EN1092-2
6	Testing Standard	EN12266-1
7	Expoxy Coating	Epoxy powder coating with minimum thickness of 250 microns inside and outside.
8	Testing Pressure
	Shell Test	PN*1.5Times
	Sealing Test	PN*1.1Times
9	Working Temperature(Max)	120℃

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Why Choose Us

Quality Assurance

Our valves meet product certifications from different countries (ASME, DIN, SNI, etc.).

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Production Scale

We have well-established production and quality control processes to ensure scale and meet customer delivery deadlines

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Raw Material Casting Scale

We have our own raw material factory with casting inventory to guarantee production output

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Botou Yaxing Fluid Equipment Co., Ltd. specializes in providing design, development, and manufacturing services for the water valve industry. We produce high-quality valve products.

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