ZG Valve has close cooperation with the research institutions of many universities in China. The design of ZG Valve is completed by the experimental team of the university and the ZG R&D team, and strictly abides by the design standards such as API/BS/DIN/JIS/SABS.

• In the selection of raw materials for casting/forging, ZG valves strictly select standard content materials. Only by using standard content materials can the valve meet the pressure design standards, which is especially important for large-size and high-pressure valves.

• ZG adopts advanced technology for casting, which can greatly reduce the possibility of bubbles and impurities in the casting process, and greatly improve the stability of valve product quality.

• The ZG valve adopts high-precision machining, which not only brings a better appearance, but also makes it easier for customers to realize that this is a high-quality valve the first time they see it.

• More importantly, this allows the various parts of the ZG valve to be more precisely matched, which brings better sealing and longer service life.

• In some processing links that require technology and experience, ZG’s skilled workers have more than 5 years of work experience, which also allows ZG’s large-diameter metal-sealed valves to achieve A-level sealing and 0 leakage level.

• ZG valves use high temperature spray paint or epoxy resin spray, usually inside and outside of the valve are sprayed to prevent rust.

• ZG's spraying workshop uses very good technology and raw materials to ensure that the valve is sprayed uniformly, the thickness of the paint is consistent, and the thickness exceeds 250um.

• The spraying workshop of ZG valve has achieved very good environmental protection effect while ensuring product quality.

• ZG valves can provide WRAS certified EPDM sealing and epoxy resin spraying according to customer requirements, which are suitable for valves that pass drinking water media.

• Before leaving the factory, ZG valves ensure that each valve has passed strict pressure test and appearance inspection, and send videos and photos to customers for confirmation.

• ZG's large-size high-pressure valves are dyed or X-ray metal tested before they leave the factory, and the inspection results are sent to customers for confirmation.

• Before leaving the factory, ZG valves can provide material reports, third-party inspection reports, etc. according to customer needs

• ZG Valve has a wealth of experience in cooperation with internationally renowned third-party testing agencies, and can accept third-party testing by SGS/BV and other agencies and issue test reports to further guarantee the quality of customers' products.

• ZG's casting raw materials, as well as the valve factory inspection data, videos and pictures are kept on file to ensure product traceability and steadily improving quality

• ZG products within 18 months from the date of shipment or 12 months after the product is installed (whichever comes first), if the product has quality problems during normal use, we will provide customers with quality assurance services.

• E-mail and telephone inquiries will be provided during the entire process of booking, leaving the warehouse, returning to the warehouse, and arriving at the warehouse.

• Establish a complete after-sales file for each customer to achieve the full life cycle of the product, complete accessory provision, technical and product support.

ZG valves have won the trust of distributors in many countries and regions with their excellent quality, and the repeat purchase rate of customers has reached more than 80%. ZG valves are widely used in

• Water supply and drainage system

• Heating system

• Environmental Engineering

• Water Conservancy System

• Desalination

• Food factory

• Farmland irrigation

• Chemical plant

• Petroleum System

• Hydraulic conveying