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.

Wholesale Low - Pressure Wafer Type Butterfly Valve Supplier, Manufacturers

1 / 5

Wholesale Low - Pressure Wafer Type Butterfly Valve Supplier, Manufacturers

The A-type and LT-type butterfly valves produced by our company have the following transmission modes: handle, worm gear, pneumatic, electric, etc, and the diameter range is: DN25-DN1200.

Our butterfly valves can be used in pipelines of petroleum, chemical, food, medicine, paper making, hydropower, shipbuilding, water supply and drainage, metallurgy, energy and other systems, and are suitable for a variety of corrosive gases, liquids, semi-liquids and solid powder media.

Send Inquiry

Product Description

Product Usage and Features

The butterfly valve is mainly composed of valve body, rotating shaft, valve plate, valve seat and driving mechanism (handle, worm gear, pneumatic device or electric device), etc. The driving mechanism drives the shaft and butterfly plate to rotate to achieve the purpose of opening and closing and controlling the flow. Its characteristics are as follows:

Simple and compact structure, small and light, easy to transport, install and disassemble.

90° opening and closing, fast switching. Small operating torque, labor-saving and lightweight.

Good sealing performance, long service life, and zero leakage.

Different component materials can be selected to be suitable for a variety of media.

The flow characteristics are close to a straight line, and the adjustment performance is good.

Product Performance Specification

Nominal Pressure	Shell Pressure	Sealing Pressure	Applicable Medium	Temperature
1.0 / 1.6 / 2.5 MPa	PN × 1.5 times	PN × 1.1 times	Freshwater, wastewater, seawater, air vapor, food, pharmaceuticals, various oils, acids, alkalis, etc.	-20 ~ 150 ℃

Main Component Materials

Component Name	Materials
Valve Body	Grey cast iron, ductile iron, stainless steel, carbon steel, copper aluminum alloy, etc.
Valve Plate	Galvanized ductile iron plate, nylon coated ductile iron plate, ball milled cast iron lined PTFE plate, stainless steel plate, dual phase steel plate, carbon steel plate, copper plate
Valve Shaft	Stainless steel, carbon steel electroplating, alloy steel 17-4, 420 steel, 416 steel
Valve Seat (Sealing Surface)	NBR, EPDM, FPM, PTFE, etc.
O-Ring	FPM, NBR
Bushing	Lubricating bronze, PTFE

Packaging & Delivery

Frequently Asked Questions (FAQ)

QWhat drive mechanisms are available for this butterfly valve?

The butterfly valve can be configured with manual handle, worm gear, pneumatic actuator, or electric actuator depending on system automation and torque requirements.

QWhat is the working temperature range for this valve?

The valve performs reliably within a temperature range of -20℃ to 150℃, depending on the specific seat and seal materials selected (such as EPDM, NBR, or PTFE).

QWhat media are compatible with these butterfly valves?

By selecting corresponding body and seat materials, the valves are suitable for freshwater, wastewater, seawater, air, vapor, food processing, pharmaceuticals, oils, acids, and alkalis.

QWhat pressure ratings can the valve handle?

The valve supports nominal pressures of 1.0 MPa, 1.6 MPa, and 2.5 MPa, tested with shell pressure up to PN × 1.5 times and sealing pressure up to PN × 1.1 times.

QHow does the 90° quick turn operation benefit pipeline systems?

The 90° quarter-turn operation ensures rapid opening and closing with low operating torque, minimizing labor requirements and facilitating precise flow regulation.

QHow are the valves protected during international transit?

Valves are securely wrapped, packed with flange protection, and encased in reinforced wooden crates or heavy-duty pallets to ensure zero transit damage.