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Discover Terofox

Terofox is a vertical integration company, capable of valve casting, machining, assembly, and inspection. Founded in year 1994 based in Taichung, Taiwan, the company started as an assembly plant, mastering in OEM parts machining, valve assembly and testing. As the business scope expanded along with growing market demand, Terofox had an official launch in steel valve manufacturing ; and had since channeled the ultimate pursuit to producing valves for heavy duty and severe application in 1998. The product scope includes ball valves, fittings, and butterfly valves.



The main production of Terofox Foundry ranges from carbon steel, stainless steel, alloy steel series such as Hastelloy, Duplex, etc. As cultivated by years of experience in serving customers worldwide, the company has incorporated ERP, CRM system ; and has acquired international certification on a constant path.

- Production & Quality Management System:
* ISO9001:2015
* PED 2014/68/EC (CE)
* Marine Services: ABS, DNV, BV, LR 

- Valve Design & Functionality:
* ISO 10497 / API 607 Fire Safe (6th & 7th edition) Approvals
* BS6364 Cryogenic Service Test Certification
* ISO 15848 Fugitive Emission
* ABS PDA type approval
* AD-2000, TA-Luft, FDA material certification, etc.


This continuous journey to gain various certifications is aiming for standardizing company operation flow; and to maximize quality & compliance of Terofox valves. Product range, which abides norms of globally recognized standards, also enhances efficiency in engaging technical discussions. Ultimately,  the mission to fulfill customer demand also benefits from the standardization. 

Persisting in engineering-oriented services in 20+ years, Terofox successfully exported products to the five continents of the world: Americas , Europe, Oceania, Asia, the Middle East region, and so on. Refined by standing in industry for more than two decades, the team had succeeded in deliveries to diverse applications, from general industry, petrochemicals chemical, to pharmaceuticals, Semiconductor wastewater, and water treatment Industries. Observing the world trend, Terofox has been employed in industries like CDA, HVAC, compressor air, semi-conductor, etc. 


Application & Service:

Food & Beverage / Water / Waste Water / Oil & Gas   – Bitnumen – Gas – Petroleum / Fire Services / LNG & FLNG / Chemical / LNG / Pulp & Paper / Mining / Offshore & Onshore / Water Treatment / Sugar Mill / PharmaceuticalPetrochemical / HVAC / Refinery / CDA / Semi-conductor...etc. 

Terofox Valves Integrated Corp.has delivered at least hundred-thousnd units of valves to the world. Wide compliance to international standards (from production to 100% inspection of products) contributes to the sustainable business. In 2017, Terofox has been awarded “commendable corporate” by national recognition. 

Featured Design: 
API 608 / API609 / API594 
ASME B16.34 
DIN EN12516 

Main Product Scope : 

- Industrial Ball Valve (API 608/ API 6D)
- Fire Safe Ball Valve (API 607/ ISO 10497)
- Fugitive Emission Ball Valve (API 624/ ISO 15848)
- Cryogenic Ball Valve (MSS-SP-134/ BS6364)
- High Temperature Ball Valve
- Trunnion Mounted Ball Valve
- Multi-way Ball Valve
- High Pressure Ball Valve
- Special Alloy Ball Valve
- PFA-lined Ball Valve
- High Purity Ball Valve
- Customized Ball Valve
- Concentric Butterfly Valve
- Double Offset Butterfly Valve (Resilient Seated/ Metal Seated) 

Specification Range 

Size:1/4” - 12” ( DN08~DN300)
Rating: Class 150 - Class 2500
             JIS 10K/20K



The mission of every Terofox member is to provide vertical integration services, in hopes of delivering products which customers expect. To fulfill the lead time promised and to deliver quality first are always top priorities of the team. Terofox customers are guaranteed efficiency in services; for example, the technical team is capable of proposing best possible casting plan. In the line of providing prototype, precision in machining fosters an initial sample which excels customer’s expectation. It only takes 30 days from technical drawing confirmation to prototype approval; this demonstrates the efficiency in company operation. 

Set out to represent the Taiwan company which is able to respond customer inquiry within 24 hours, Terofox invests pioneering customer relationship management system (CRM). The CRM system customized for customers allows review of past enquires, standard procurement requirements. Time zone difference never comes to play in terms of answering customer need ; and improves interactivity with customers. Nowadays technology has evolved to industry 4.0. Terofox team progress with the trend and has headed for automation development. Terofox listens to customer’s feedback and shared experience. Solution providing and problem solving is the ultimate goal of Terofox team.

Terofox founder upholds the spirit of entrepreneurship and continues to provide high-quality products and positive services. Both institutionally and entrepreneurially, Terofox business philosophy, integrity, morality, and the kingly way has been circulated in company atmosphere. The circulation of good will eventually nurtures the Terofox corporate culture today. Aside from business, the company also has done its part for social responsibility. “Do more and think more” brings closer the customer and creates win-win situation always. Long-term business partnership is the shared faith throughout Terofox members. 

Do right things, right the first time and every time.