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 Wafer Butterfly Valve,water usage butterfly valve Suppliers, Factories

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CE Certification Wafer Butterfly Valve,water usage butterfly valve Suppliers, Factories

Discover our premium A-type and LT-type butterfly valves, designed for exceptional performance in various applications. We offer a wide range of options, including manual handles, worm gears, pneumatic, and electric actuators to suit your operational needs. Our butterfly valves are available in an extensive diameter range from DN25 to DN1200, ensuring that you find the perfect fit for your system requirements. Optimize your processes with our reliable, high-quality butterfly valves today!

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Product Description

Compact & Lightweight Design

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.

Rapid & Efficient Operation

In terms of operation, these valves provide quick opening and closing, typically achieved with a 90 - degree rotation of the handle or actuator. This rapid response makes them suitable for applications requiring frequent on - off control. The streamlined disc design minimizes flow resistance, ensuring low pressure drop and high flow capacity, which improves system efficiency and reduces energy consumption.

Simplified Maintenance

Maintenance is another strong point. The simple structure of wafer butterfly valves means fewer components, decreasing the likelihood of failure and making repairs straightforward. Moreover, many models feature replaceable seat rings, allowing for easy maintenance without replacing the entire valve.

Material Versatility

Regarding material versatility, they can be manufactured from various materials, including stainless steel, ductile iron, and plastic, enabling them to withstand different media, temperatures, and corrosive environments. This adaptability makes wafer butterfly valves a reliable choice across diverse industries, from water treatment and HVAC systems to chemical processing and power generation.

DIMENSIONS in(mm)

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

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

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

Frequently Asked Questions (FAQ)

1. What is the difference between a wafer and a lug butterfly valve?

A wafer butterfly valve is designed to be clamped between two pipe flanges using long bolts, creating an economical and lightweight seal. In contrast, lug butterfly valves have threaded inserts (lugs) around the perimeter, allowing individual bolting to each flange and enabling dead-end service.

2. Can wafer butterfly valves be used for regulating flow?

Yes, wafer butterfly valves can serve both on/off isolation and flow throttling services. However, optimal throttling performance is generally achieved between 30 and 70 degrees of opening to prevent cavitation and disc wear.

3. What materials are recommended for corrosive media?

For corrosive environments, stainless steel bodies and discs (such as SS304, SS316, or Duplex) paired with corrosion-resistant resilient liners such as PTFE, Viton, or specialized elastomers are recommended.

4. How do I choose between PN10 and PN16 pressure ratings?

PN10 is rated for working pressures up to 10 bar, whereas PN16 is rated up to 16 bar. The choice depends on your pipeline's maximum operating pressure and the flange standard used in your piping system.

5. Is it necessary to disassemble the entire valve for maintenance?

No, many modern wafer butterfly valves feature replaceable seat rings and simplified internal designs, allowing the seat or disc to be serviced or replaced without completely replacing the main body.

6. What actuation methods are compatible with wafer butterfly valves?

Wafer butterfly valves can be operated via standard manual hand levers, worm gear operators, pneumatic actuators, or electric motorized actuators depending on automation requirements.