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 Bronze Disc Wafer Butterfly Valve - Durable & Efficient Manufacturers, Factory

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CE Certification Bronze Disc Wafer Butterfly Valve - Durable & Efficient Manufacturers, Factory

This bronze disc butterfly valve is designed for reliable flow control in industrial and marine systems, featuring a precision-cast aluminum bronze disc delivering excellent seawater corrosion and cavitation resistance. Built to international standards, it is offered in wafer and lug body types with a concentric structure and fully encapsulated EPDM/NBR seat for bubble-tight bi-directional sealing and low operating torque.

The stainless steel stem and reinforced bearings ensure smooth operation and extended service life. Suitable for pressure ratings PN10/PN16 and Class 125/150, it accommodates water, seawater, oil, and non-corrosive gases. It supports lever, gear, electric, and pneumatic actuation.

With a compact, lightweight design, the valve is easy to install and maintain, widely used in marine engineering, water treatment, desalination, and fluid pipelines requiring stable, long-lasting performance.

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Product Description

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.

High-Performance Aluminum Bronze Disc

The bronze disc butterfly valve stands out as a premium fluid control solution, with its core advantage lying in the high-performance aluminum bronze disc—a material engineered to deliver unmatched resistance to seawater corrosion, cavitation, and chemical erosion. Unlike standard carbon steel valves that degrade rapidly in harsh marine, desalination, or corrosive industrial environments, this valve maintains structural integrity and tight sealing for decades, reducing frequent replacements and maintenance costs. Its corrosion resistance is further reinforced by a precision-cast bronze disc finish, ensuring consistent performance even in prolonged exposure to saltwater, brackish liquids, and mild corrosive media.

Bubble-Tight Bi-Directional Sealing

A second key strength is its bubble-tight bi-directional sealing with minimal operating torque. The valve adopts a concentric disc structure paired with a fully encapsulated elastomer seat (customizable to EPDM, NBR, or PTFE), achieving zero-leakage shut-off that meets international industrial standards. This design not only prevents fluid loss but also reduces wear on stem and bearing components—critical for long-term durability. Unlike traditional valves that demand high torque to operate, its streamlined structure ensures smooth, effortless opening and closing, even under fluctuating pressure conditions, enabling precise throttling control for both on-off and proportional flow regulation.

Versatile Compatibility & Installation

Versatile compatibility and easy installation further elevate its market competitiveness. Available in wafer (space-efficient) and lug (tool-free removal) body configurations, it adheres to global standards including ANSI, DIN, and BS, ensuring seamless integration with diverse pipeline systems worldwide. Its compact, lightweight design simplifies on-site installation, cutting labor time and equipment costs. The valve accommodates a wide pressure range (PN10–PN16, Class 125/150) and temperature tolerance (-20°C to 120°C), making it adaptable to water treatment plants, marine piping, oilfield fluid transport, and desalination systems—eliminating the need for custom-specific variants.

Multi-Actuation Flexibility

Multi-actuation flexibility adds operational convenience, supporting manual lever, handwheel gearbox, electric, and pneumatic actuators. This allows seamless integration into both manual control systems and fully automated industrial pipelines, catering to diverse on-site control needs and future scalability. Complemented by a stainless steel stem and reinforced bearings that minimize friction during frequent cycling, the valve ensures stable, low-maintenance performance with reduced downtime.

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.

As a cost-effective, high-reliability solution, it outperforms competitors in longevity, adaptability, and performance, making it the top choice for industries prioritizing durable, efficient flow control in challenging environments.

Technical Drawings & Product Overview

Wafer Butterfly Valve Dimensional Diagram 1

Wafer Butterfly Valve Dimensional Diagram 2

Technical Specifications & Dimensions

DIMENSIONS in(mm) [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

DIMENSIONS in(mm) [DN350 - DN600]

Size	A	B	C2	D	E	F	K	SxS/d	Top Plate 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: PN10

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

Flange Rating: PN16

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

Operation Demonstration

Frequently Asked Questions (FAQ)

What makes the aluminum bronze disc superior in corrosive media?

The high-performance aluminum bronze disc is engineered to resist seawater corrosion, cavitation, and chemical erosion. With a precision-cast bronze disc finish, it maintains structural integrity and sealing in prolonged exposure to saltwater, brackish liquids, and mild corrosive media.

What sealing performance and seat materials are available?

The valve utilizes a concentric disc structure paired with a fully encapsulated elastomer seat (customizable to EPDM, NBR, or PTFE), providing bubble-tight bi-directional zero-leakage shut-off with minimal operating torque.

Which international pipeline standards and pressure classes are supported?

The valve adheres to ANSI, DIN, and BS standards, available in wafer and lug body configurations. It accommodates pressure ratings of PN10–PN16 and Class 125/150 across a broad temperature range of -20°C to 120°C.

What actuation methods are compatible with this valve?

It features multi-actuation flexibility supporting manual lever, handwheel gearbox, electric, and pneumatic actuators, facilitating both manual operation and fully automated control setups.

How does the disc design optimize flow and reduce operating cost?

The streamlined disc reduces flow resistance and ensures low pressure drop with high flow capacity, lowering energy consumption. Rapid quarter-turn (90-degree) cycling allows quick shut-off and precise throttling.

In what industrial applications is this valve typically used?

Its robust construction makes it ideal for water treatment plants, marine piping systems, oilfield fluid transport, and desalination systems where high durability against corrosive fluids is essential.