Stainless Steel Valves  Manufacturers, Traders, Suppliers

SERTO unions have been used successfully in diverse industries and applications across the globe since 1952. The unique features of this system with radial mounting and dismounting are highly valued by our customers. From simple tube connections to complex system solutions – SERTO develops its products with state-of-the-art technology in its in-house laboratories and workshops. Over time, a complete line of products including tube fittings, valves, hoses and accessories has been created – for anything that needs to be conveyed, distributed or regulated.
SERTO is not only renowned for its intelligent systems and wide range of products, but also for its extensive know-how, fast delivery and modern logistics. As a part of our customer focus, SERTO provides support in planning, manufacturing and distribution and guarantees on-time delivery of its top quality products.
Subsidiaries in Germany, France and Italy as well as over 30 representatives throughout Europe work together to form an efficient and professional sales network. Quality comes first and foremost at SERTO and is therefore implemented consistently in the entire group.

HELS was established in February 2012, by combining professionals who have over 20 years of experience in the industry, to provide qualified technical services and combining its experience with production for the development of new products. HELS strives to become one of the major brands abroad in this field by using existing knowledge, technological infrastructure, machinery and experienced human resources.

As a team we have a goal to become the engine of innovation in the sector, as well as develop new products and be solution partner for our customers and take part in significant projects within the country and abroad. HELS perceives the concept of total quality as management policy and strategic value by putting customer satisfaction and reliability over all.

JOHN-VALVE MFG FACTORY CO., LTD. is a 100 % valve manufacturer based in Taiwan since 1981 that is trustworthy with Precisely Machining, High-Quality Products, and Puntual Delivery time.
Industries We Serve:
With over 30 years of valve experience, obtaining completed international certificates, and a high-end quality control system, our products are widely used in the global market and different kinds of projects, such as Marine & Shipbuilding, Oil & Gas, Petrochemical, Chemical, Food& Beverage, Pulps&Paper, Etc.
Product Standard We Design:
Today, John-Valve exports to over 80 countries throughout the world by designing and providing our valve products according to EN European, ANSI, and JIS standards and customized requests.
As markets change and energy awareness rises, John-Valve is also actively developing high-end products that meet government and market demands, such as Cryogenic Ball Valves, Metal Seated Ball valves, Hydrogen Ball valves, and High-Performance valves.
Other Service We Provide:
John-Valve not only provides the completed valves, and valve packages but also can offer the valve components OEM service, such as stainless steel Ball, the core of Ball Valve. With grinding and lapping in-house, John-Valve can make high-quality stainless steel balls with Roundness under 0.007 mm and surface roughness under the N3 requirement, metal balls, and seated sets with high-quality tightness with leakage rate A. Other customized parts are also welcome!
We sincerely welcome any inquiry and request !