Butterfly, Gate & Check Valves Engineered In-House From Casting to Pressure Test
Tianjin Top Valve supplies EPC contractors, distributors and OEMs with resilient-seated butterfly valves, gate valves, check valves, globe valves and ball valves. Because our group casts its own bodies and compounds its own rubber seats since 1987, buyers get consistent sealing performance, traceable quality and direct engineering support without a trading middleman.
Industrial Valve Range for Water, HVAC, Marine & Process Pipelines
Browse our core valve families. Each model is available with full datasheets, dimensional drawings and material certificates on request.
Three Decades of Valve and Rubber Expertise Under One Roof
Tianjin Top Automation Equipment Co., Ltd. was established in 2016 in the Wuxia Industrial Park, Dongli District, Tianjin. Our largest shareholder owns two long-running factories: Tianjin Donglian Valve Factory (since 1996) and Tianjin Dongfang Rubber Factory (since 1987).
That heritage matters to buyers: the elastomer seat is the component that most often determines a butterfly or gate valve's sealing life. We formulate and mould it ourselves, then machine, assemble and pressure-test the valve on the same campus.
- Independent foundry for valve bodies
- In-house rubber products factory
- Modern CNC machining center
- Physical & chemical laboratory
Inside Our Production Floor: From Foundry to Export Crate
Vertical integration shortens lead times and removes supplier-to-supplier quality gaps. Here is how a valve moves through our Tianjin facility.
Production Floor Overview
23,000 m² campusCasting, rubber moulding, machining and assembly sit on one campus, so work-in-progress never leaves our quality control.
Body Casting
Independent foundryBodies are poured in our own foundry, allowing material chemistry checks before machining begins.
Rubber Seat Moulding
Rubber expertise since 1987EPDM and NBR seats are compounded and vulcanised in-house for consistent hardness and compression set.
CNC Precision Machining
Disc · Stem · BoreMachining centers finish disc edges, stem bores and flange faces to the tolerances needed for bubble-tight shut-off.
Assembly Line
Batch traceabilityEach valve is assembled with recorded component batches, so any unit can be traced back to its castings and seat lot.
Pressure & Seat Testing
100% shell + seat testEvery valve undergoes hydrostatic shell and seat leakage testing before it is released to packing.
Final Inspection
Coating & marking checkInspectors verify coating, nameplate data and operator function against the purchase order before release.
Export Protective Packaging
Bubble bag + export crateValves are bagged individually to protect seats and coatings during long sea freight, then crated for shipment.
Which Valve Type Fits Your Pipeline?
A quick engineering reference our sales engineers use when buyers ask which valve family suits a given duty.
| Valve Type | Primary Function | Flow Resistance | Typical Media | Best-Fit Applications |
|---|---|---|---|---|
| Butterfly Valve | Isolation, throttling | Low | Water, seawater, HVAC, mild chemicals | Large-diameter water networks, HVAC, marine, fire protection |
| Gate Valve | Full-bore on/off isolation | Very low | Potable water, wastewater | Water mains, buried distribution lines, pump isolation |
| Check Valve | Automatic backflow prevention | Low to medium | Water, wastewater, HVAC fluids | Pump discharge, booster stations, anti water-hammer duty |
| Globe Valve | Precise flow regulation | Higher | Steam, ammonia, high-temperature fluids | Power stations, refrigeration plants, vacuum systems |
| Ball Valve | Quick quarter-turn shut-off | Very low | Oil, gas, chemicals, water | Process plants, diversion (3-way), compact installations |
Final selection should always consider pressure class, temperature, media compatibility of seat elastomer and the governing local standard. Send your duty conditions and our engineers will recommend a model.
Verified Quality Systems Buyers Can Audit
Our company meets ISO 9001 quality management, EU conformity requirements, and occupational health & safety and environmental management system standards. Click any certificate to view it in full.
Valve Selection Guides and Engineering Updates
Practical articles written by our engineering and sales team to help buyers specify the right valve the first time.
Enhancing Control with Advanced Butterfly Valve Technology
How disc profile, seat bonding and operator choice influence torque, sealing and control accuracy.
Read More
Stainless Steel Butterfly Valves: Quality & Durability for Every Duty
When stainless steel bodies and discs justify their cost, and which grades suit corrosive or hygienic media.
Read More
The Benefits of Water Butterfly Valves for Your Systems
Why resilient-seated butterfly valves dominate water distribution: weight, cost, installation space and maintenance.
Read More
New Resilient Seated Butterfly Valve Solutions
An overview of our latest resilient-seated range and the project conditions each variant is built for.
Read More
Pinless Lug Type Butterfly Valves for Reliable Pipeline Service
Why a pinless disc-to-stem connection reduces leak paths and simplifies dead-end service in lug installations.
Read More
Bronze, Ceramic or Stainless Steel Discs: Choosing for Durability
Matching disc material to seawater, abrasive slurry or chemical service to extend butterfly valve life.
Read MoreQuestions Procurement Teams Ask Before Ordering
Straight answers on approvals, standards, manufacturing control and logistics.
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. Browse our WRAS butterfly valves or 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 [email protected] 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. See our global service page for regional support.
Specifying Valves for an Upcoming Project?
Get our full catalog with datasheets, dimensional drawings and approval references. Share your duty conditions and an engineer will shortlist suitable models.
