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 Halar Lined Pinless Butterfly Valve Supplier, Manufacturer

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Wholesale Halar Lined Pinless Butterfly Valve Supplier, Manufacturer

Halar Lined Pinless Butterfly Valve is an alternating copolymer of ethylene and chlorotrifluoroethylene. It has excellent chemical stability and non-flammability, as well as good electrical and mechanical properties, and can be processed by general thermoplastic molding methods. Halar powder coating is widely used in chemical industry, pulp and paper industry, pharmaceutical industry, food industry and semiconductor industry as a corrosion-resistant protective coating.

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Product Description

Application & Key Features

1. Excellent chemical resistance Chemical reagents commonly used in industry have almost no effect on Halar. Halar can resist chemicals including strong inorganic acids, strong alkalis, metal etchants, liquid oxygen, and all organic solvents except hot amines (such as aniline and dimethylamine).

2. High temperature resistance Can be used at 150 degrees Celsius, and even up to 170 degrees Celsius for a short time.

3. Strong adhesion Halar has strong adhesion, which makes the Halar valve plate have strong impact resistance.

4. Good surface smoothness The surface is particularly smooth, which reduces the possibility of pinholes in the coating, inhibits the accumulation of solid particles and metal salts, and reduces the formation of biofilm and bacteria. In the single crystal tube, no other impurities will be introduced to damage the growth of the single crystal.

5. Higher hardness Provides better wear resistance, better scratch resistance, reduces the possibility of accidental damage during installation and transportation, and reduces maintenance costs.

Halar coated valve application demonstration

Product Performance Specification

Nominal Diameter	Nominal Pressure	Travel Angle	Operating Temperature	Coating Thickness	Applicable Media	Connection Type	Connection Standard
DN40-DN2000 (1.5”~80”)	PN1.0~ 1.6MPa	0°~ 90°	-20~ 120℃	Mini 200um	Strong acid, strong alkali, metal etchant, liquid oxygen, all organic solvents except hot amines (such as aniline, dimethylamine), desulfurization liquid, sea water, drinking water, food, etc.	Wafer type (flangeless A type, U type, single flange type), Single clamp type (LT body), double flange	GB/DIN/BS/JIS/ASME/EN/ANSI/ISO

Product Demonstration

Packaging & Delivery

Frequently Asked Questions (FAQ)

What types of media are compatible with Halar coated valves?

Halar provides outstanding chemical resistance against strong inorganic acids, strong alkalis, metal etchants, liquid oxygen, desulfurization liquid, seawater, potable water, and nearly all organic solvents except hot amines such as aniline and dimethylamine.

What is the operating temperature range for these valves?

The standard operating temperature specification ranges from -20℃ to 120℃. Additionally, the Halar material itself can withstand sustained use at 150℃ and short-term exposure up to 170℃.

What size ranges and connection types are provided?

The valves are available in nominal diameters from DN40 to DN2000 (1.5" to 80"). Connection configurations include Wafer type (flangeless A type, U type, single flange type), Single clamp type (LT body), and double flange designs conforming to GB, DIN, BS, JIS, ASME, EN, ANSI, and ISO standards.

What is the standard coating thickness of the valve disc?

The protective Halar coating applied to the valve components has a minimum thickness of 200 µm, ensuring optimal corrosion resistance, adhesion, and mechanical impact durability.

Why is the smooth surface of Halar coating beneficial in high-purity processes?

The surface smoothness prevents pinholes, inhibits the accumulation of solid particles and metal salts, and stops biofilm and bacterial growth, ensuring no foreign impurities compromise sensitive processes like single crystal growth.

How are the valves prepared and secured for transport?

Valves are thoroughly protected using specialized wraps, edge protectors, and durable wooden crates to eliminate transit vibration, scratch hazards, and accidental impact before site delivery.