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 Fire-Fighting Wafer Signal Butterfly Valve Supplier, Factory

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Wholesale Fire-Fighting Wafer Signal Butterfly Valve Supplier, Factory

The fire-fighting wafer signal butterfly valve is a center line butterfly valve developed by introducing advanced foreign technology. The center line wafer fire-fighting special signal butterfly valve has the advantages of simple structure, reliable sealing, easy opening, long life, and convenient maintenance.

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Product Description

★ Application

The fire-fighting wafer signal butterfly valve is widely used in various pipelines of drainage, construction, fire protection and other systems, especially in fire protection pipelines. The center line wafer fire-fighting special signal butterfly valve can clearly display the valve switch status, and has an intuitive, clear and reliable reflection of the working status of the fire protection system, so it is widely used in the fire protection system. The wafer fire-fighting special signal butterfly valve is suitable for fire-fighting special pipelines in urban construction, chemical industry, metallurgy, petroleum, pharmaceuticals, food, beverages, environmental protection and other industries.

⚙ Product Performance Specification

Nominal Pressure	Shell Pressure	Sealing Pressure	Applicable Medium	Temperature
0.6/1.0/1.6 /2.5 MPa	PN X 4times	PN X 2times	Water, oil, gas	-20~150℃

⛬ Main Component Materials

Component Name	Valve Body	Valve Shaft	Disc	Valve Seat	Valve Seat Back	Bush	Sealing Ring	Round Gasket	Split Ring	Clamp
Material	Ductile Iron, Cast Steel	410/316	Ductile Iron, Electroplating, Stainless Steel	Epdm, Ptee	Phenolic Resin	Bronze. Ptee, Nylon Sleeve	Nbr, Epdm	16/Brass	16/Brass	Spring Steel

▣ Main Sizes and Connection Sizes

DN	H1	H2	H3	D1	D2	L1	L2	L3	ФA	ФB	ФC	ФD
50	70	130	68	120	95	43	32	245	12.6	70	23	152
65	76	143	68	136	109	46	47	245	12.6	70	26-30	152
80	86	155	68	160	124	46	65	245	12.6	70	18	152
100	104	170	68	182	153	52	91	245	15.8	90	24-50	152
125	118	190	68	215	179	56	112	245	19	90	23	152
150	132	210	68	238	206	56	146	245	19	90	25	152
200	167	243	85	295	264	60	194	400	22.1	115	25	300
250	198	282	85	357	316	68	242	400	28.5	115	29	300
300	239	310	52	407	373	68	292	400	31.7	140	29	305
350	267	368	82	467	436	78	325	400	31.7	140	30	305
400	309	400	212	515	488	102	380	431	33.15	197	26-30	290

📦 Packaging

❓ Frequently Asked Questions

QWhat is the main function of a wafer signal butterfly valve in fire protection systems?

The fire-fighting wafer signal butterfly valve transmits electric signals indicating the open or closed status of the valve to a central control room. This provides intuitive, real-time monitoring of system conditions to guarantee pipeline safety and quick emergency response.

QWhat media are compatible with this signal butterfly valve?

This butterfly valve is designed to handle common industrial and commercial fluids, primarily working with water, oil, and gas media within a temperature range of -20°C to 150°C.

QWhat materials are used for the main body and sealing seat?

The body is typically manufactured from ductile iron or cast steel for robust impact resistance, while the sealing seats utilize resilient EPDM or PTFE to deliver dependable bidirectional tight shutoff performance.

QWhat nominal pressure levels does this valve series support?

The valve supports nominal pressure (PN) ratings of 0.6 MPa, 1.0 MPa, 1.6 MPa, and up to 2.5 MPa, with shell testing rated up to 4 times the nominal working pressure.

QHow are the valves packaged to prevent shipping damage?

Valves are securely wrapped, cushioned, and packed in reinforced export-standard wooden crates or palletized cases to safeguard mechanical parts and signal switches against vibration and impact during transport.