What types of industrial valves does Tianjin Top Valve manufacture?

We manufacture resilient-seated butterfly valves (wafer, lug, double-flanged and grooved-end), check valves (dual plate, wafer lift, silent and ball type), resilient seat gate valves (rising stem, non-rising stem, buried and DIN pattern), globe valves for water, ammonia, vacuum and power-station service, as well as ball valves and eccentric plug valves.

Are your butterfly valves approved for drinking water?

Selected models, including 4020G, 4020L, 4325G and 4325L, are WRAS approved for potable water applications. Request our catalog to receive the approval reference and material declaration for each model.

Do you produce your own rubber seats and castings?

Yes. Our group operates Tianjin Dongfang Rubber Factory (since 1987) and Tianjin Donglian Valve Factory (since 1996), with an independent foundry, rubber compounding and moulding, a CNC machining center, assembly lines and a physical and chemical laboratory. This lets us control elastomer quality and casting integrity in-house.

Which quality and management certifications do you hold?

Our management system meets ISO 9001 quality management, ISO 14001 environmental management and ISO 45001 occupational health and safety standards, together with EU (CE) conformity for applicable products.

Can you supply valves to international flange and dimension standards?

Depending on the model, valves can be supplied with flange drilling to EN 1092 PN10/PN16, ASME/ANSI Class 125/150, BS and JIS, and our German-standard gate valves follow DIN face-to-face dimensions. Always confirm the exact standard on the model datasheet before ordering.

How can I get datasheets, drawings and a product catalog?

Request a catalog online or email victor@dytopvalve.com with your size, pressure rating, media and connection type. Our engineering team replies within 24 hours with datasheets, dimensional drawings and material specifications.

Where is your factory located and how are orders shipped?

Our factory is in the Wuxia Industrial Park, Dongli District, Tianjin, China, with fast road access to Tianjin Port. We export to customers in more than 50 countries using protective packaging and sea, air or rail freight.

CE Certification Water-Safe Butterfly Valve for Efficient Flow Control Manufacturers, Manufacturer

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CE Certification Water-Safe Butterfly Valve for Efficient Flow Control Manufacturers, Manufacturer

Butterfly valves feature a lightweight and compact structure, facilitating easy installation and maintenance. They are simple to operate, with excellent sealing, low flow resistance, and significant energy - saving effects. Being cost - effective, they are widely applicable across various industries.

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Product Description

Overview & Key Benefits

Wafer butterfly valves offer several significant advantages. Firstly, their compact and lightweight design makes them highly space-efficient, ideal for installations where space is limited. Unlike traditional valves, their wafer-style body can be easily sandwiched between two flanges, reducing installation complexity and saving both time and cost.

With a simple structure, small size, and light weight, they are easy to install and save space, making them particularly suitable for the production of large-diameter valves. They feature rapid and labor-saving opening and closing, low fluid resistance, and good regulating performance. When fully open, the flow resistance is minimal, and they can achieve sensitive flow control within an opening angle range of 15° - 70°.

Industrial Applications

Water Systems

Applied to pipelines for domestic water, fire water, circulating water, and sewage in water supply and drainage systems to control and regulate flow.

Powder, Oil & Gas Ducts

Suitable for pipelines transporting powder, oil, and mud, as well as high-volume ventilation and HVAC air control systems.

Hard-Sealed Applications

Engineered for complex working conditions in chemical and smelting industries, offering resistance to high temperatures, pressure, and erosion.

Soft-Sealed Applications

Designed for slightly acidic and alkaline media such as water, air, and oil, delivering outstanding, bubble-tight sealing performance.

Market Outlook & Trends

The global butterfly valve market size was approximately $11.34 billion in 2024 and is expected to reach $11.907 billion in 2025. Demand from petroleum and natural gas industries remains strong, accompanied by significant automation trends across all processing sectors. Coupled with accelerated urbanization in China, immense demand continues in water distribution, sewage treatment, and building HVAC systems. The projected growth rate of China's pneumatic high-performance butterfly valve sector is anticipated to reach approximately 15% from 2025 to 2030.

Technical Specifications & Dimensions (mm)

Standard Dimensions (DN50 - DN300)

Size	A	B	C2	D	E	F	KxK	Top PCD	Plate HOLE N-Dia
DN50	140	70	105	41	90	30	11x11	70	4-θ9
DN65	152	76	117	44	90	30	11x11	70	4-θ9
DN80	159	91	130	44	90	30	11x11	70	4-θ9
DN100	178	102	162	51	90	30	14x14	70	4-θ9
DN125	191	119	187	54	90	30	14x14	70	4-θ9
DN150	203	133	216	54	90	30	17x17	70	4-θ11
DN200	241	170	271	64	125	30	17x17	102	4-θ11
DN250	273	210	330	64	125	30	22x22	102	4-θ11
DN300	308	243	376	76	125	30	22x22	102	4-θ11

Large Diameter Dimensions (DN350 - DN600)

Size	A	B	C2	D	E	F	K	SxS/d	Top Plate Data PCD
DN350	413	267	45	150	80	525	470	22x22	125
DN400	451	309	45	175	90	585	525	27x27	140
DN450	467	318	45	175	109	650	585	27x27	140
DN500	525	350	45	175	127	720	650	36x36	140
DN600	607	410	45	210	154	850	770	36x36	165

Flange Rating Dimensions: PN10 & PN16 (DN700 - DN1000)

PN10 Specifications:

Size	A	B	C	L	фD	фK	Nxфd	4xM	фE	фF	a°	G	H	O	P	фR	Weight(Kg)
DN700	784	581	163	169	895	840	24xф31	/	741	695	15	355	146	146	228	400	361
DN800	832	655	188	195	1015	950	24xф34	/	847	794.7	15	355	146	146	228	400	444
DN900	974	745	203	211	1115	1050	24xф34	4xM30	943	864.7	12.857	377	170	170	243	450	660
DN1000	1054	803	216	224	1230	1160	24xф37	4xM33	1049	965.7	12.857	377	170	170	243	450	830

PN16 Specifications:

Size	A	B	C	L	фD	фK	Nxфd	4xM	фE	фF	a°	G	H	O	P	фR	Weight(Kg)
DN700	784	581	163	169	910	840	20xф37	4xM33	741	695	15	355	146	146	228	400	396
DN800	926	655	188	195	1025	950	20xф40	4xM36	847	794.7	15	377	170	170	243	450	573
DN900	974	745	203	211	1125	1050	24xф40	4xM36	943	864.7	12.857	377	170	170	243	450	690
DN1000	1110	803	216	224	1255	1170	24xф43	4xM39	1049	965.7	12.857	476	180	250	302	450	1025

Diagrams & Demonstrations

Frequently Asked Questions (FAQ)

What are the primary benefits of using a wafer butterfly valve?

Wafer butterfly valves feature an ultra-compact and lightweight body designed to be sandwiched directly between pipe flanges. This design minimizes installation footprint, lowers material costs, and enables rapid assembly compared to bulkier flanged valve types.

When should a soft-sealed valve be chosen over a hard-sealed valve?

Soft-sealed butterfly valves are ideal for standard working conditions handling water, air, light oil, and mildly corrosive media where absolute bubble-tight shutoff is critical. Hard-sealed butterfly valves are engineered for severe conditions involving high temperatures, elevated pressures, and abrasive or erosive media commonly found in smelting and chemical processing.

How effective are butterfly valves for flow throttling and control?

Butterfly valves offer excellent flow regulation capabilities, providing sensitive and proportional control within a disc opening angle of 15° to 70°. When fully opened, the disc profile ensures minimal fluid resistance and low pressure drop across the line.

What is the difference between PN10 and PN16 large-diameter specifications?

PN10 and PN16 indicate nominal pressure ratings (10 bar and 16 bar, respectively). While the basic face-to-face dimensions may align, PN16 models feature reinforced body construction, thicker flange standards, and distinct bolt circle dimensions (PCD) to withstand higher line pressures.

Can these butterfly valves be integrated into automated pipeline systems?

Yes, the valves feature standard top-plate flange mountings (PCD patterns), allowing quick and seamless mounting of pneumatic actuators, electric actuators, and manual gear operators to support remote control and automated facility operations.

What media types are compatible with wafer butterfly valves?

These valves are versatile and compatible with domestic water, firefighting water, industrial circulating water, sewage, ventilation air, fine powders, slurries, and petroleum products depending on liner and disc material selection.