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.

High-Quality Double Half Shaft Wafer Butterfly Valve Supplier, Manufacturer

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High-Quality Double Half Shaft Wafer Butterfly Valve Supplier, Manufacturer

The disc of the Wafer Butterfly Valve is installed in the diameter direction of the pipe. In the butterfly valve body cylindrical channel, disc shaped butterfly plate around the axis of rotation, rotation Angle between 0°-90°,can play the role of flow regulation, when the butterfly plate rotation to 90°, the valve to reach the maximum opening. Wafer butterfly valve is with simple structure, small size, light weight, only by a few parts. And only need to rotate 90° can quickly open and close, simple operation, and the valve has good fluid control characteristics.

Technical Specifications:
Face to face: API609 / EN593 / EN558
Flange drilling: DIN2501/ ANSIB16.10 / EN1092
Working pressure: PN10/PN16
Upper flange connection: ISO5211

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Product Description

Product Usage and Features

Small in size and light in weight. Easy installation and maintenance. It can be mounted wherever needed.

Simple and compact construction, quick 90 degrees on-off operation.

Minimized operating torque, energy saving.

Flow curve tending to straight line. Excellent regulation performance.

Long service life. Standing the test of tens of thousands opening/closing operations.

Bubble-tight sealing with no leakage under the pressure test.

Wide selection of materials, applicable for various medium.

Product Performance Specification

Item	Part Name	Material	Item	Part Name	Material
1	Body	GGG50	3	Shaft	Stainless Steel
2	Disc	Stainless Steel	4	O-ring	EPDM

Valve Material and Sizes

DN	H1 (mm)	H2 (mm)	L (mm)
40	139	68	33
50	161	80	43
65	175	89	46
80	181	95	46
100	200	114	52
125	213	127	56
150	226	139	56
200	260	175	60
250	292	203	68
300	337	242	78
350	368	267	78
400	400	298.6	105
450	422	318	114
500	480	355	127
600	562	444	154
700	623.9	505.1	165
800	646	499	190
900	672	576	203
1000	720	637	216
1100	800	701	230
1200	940	844	254

Packaging

Frequently Asked Questions

1. What materials are standard for the valve body and disc?

The standard configuration features a ductile iron GGG50 body, stainless steel disc, stainless steel shaft, and an EPDM O-ring for robust sealing and operational performance.

2. What size ranges are available for this valve?

The valve is manufactured in a comprehensive range of nominal diameters, starting from DN40 up to DN1200, accommodating diverse pipeline specifications.

3. How reliable is the valve sealing mechanism?

The valve provides bubble-tight sealing with zero leakage detected during pressure testing, ensuring high integrity under demanding operational conditions.

4. Can this valve be used for flow regulation?

Yes, with its linear-tending flow curve and low operating torque, it offers precise regulation performance alongside rapid 90-degree on-off operation.

5. How is the product protected during export shipping?

Each valve undergoes rigorous pre-shipment inspection and is packed in custom, impact-resistant industrial packaging to ensure safe transit and arrival.