Stainless Steel GB Standard Check Valve

HUADU VALVE is a leading manufacturer and supplier of Stainless Steel GB Standard Check Valve

in China, and huadu also focuses on the development of product technology.  The valve body of this Stainless Steel GB Standard Check Valve is made of CF8 stainless steel (equivalent to national standard 304 material). Huadu Factory conducts spectral testing on all raw materials first to ensure the chromium and nickel content meets the required standards, resulting in much better corrosion resistance than non-standard materials used by small manufacturers. In addition, its structure is designed in accordance with the national standard GB/T. The sealing surface of the valve disc undergoes precision grinding for an excellent fit, which prevents medium leakage during flow and reliably blocks reverse flow, eliminating the risk of backflow damage to downstream pumps.

Technical Specifications

Key national standard parameters are clearly cast on the valve body: it features a nominal diameter of DN65 and a pressure rating of PN16, which are exactly the commonly used specifications in industrial pipelines. The connection method adopts national standard flanges, with both the bolt hole spacing and sealing surface complying with GB/T 9113 standards. This allows direct connection to existing pipelines without any additional modifications to the pipe interfaces. The Stainless Steel GB Standard Check Valve body wall thickness is also manufactured in strict accordance with national standards, ensuring stable resistance to pressure fluctuations. Under normal operating conditions, it can be used for 5–6 years with basically no deformation or corrosion issues.

Application Fields

This Stainless Steel GB Standard Check Valve is suitable for a wide range of mainstream working conditions:

Clean fluid pipelines in the food and pharmaceutical industries: It meets the national standard requirements for hygienic-grade materials.

Main pipelines for municipal water supply and drainage: It effectively prevents sewage from flowing back into the clean water system.

Medium transportation pipelines in the chemical industry (such as pure water and general solvents), as well as normal-temperature pipelines for thermal circulation systems: Direct installation is feasible.

Auxiliary pipelines in small and medium-sized industrial projects: No additional specification adjustments are needed, delivering outstanding versatility and convenience.

Packaging & Delivery

As a local Chinese manufacturer, Huadu adopts robust packaging for this check valve: the valve body surface is first treated with anti-rust coating, then wrapped in thickened bubble film, and finally reinforced with hard cardboard boxes. This ensures the flange sealing surfaces are protected from damage even during long-distance transportation. Regular specifications are kept in stock for prompt delivery. For projects with tight schedules, we can coordinate the production line for priority scheduling, cutting the customs clearance cycle by more than half compared to other check valve suppliers.

Competitive Advantages vs. Peers

Compared with similar products on the market, Huadu’s check valve stands out for its dual advantages of national standard compliance and high cost-effectiveness: every parameter aligns with national standard testing criteria, eliminating the need to supplement additional compliance documents during project acceptance. Moreover, as a factory-direct supplier without intermediate markup, our price is nearly 30% lower than that of imported GB standard check valves of the same quality, enabling budget-constrained projects to access reliable and compliant products.

After-Sales Service & Support

As a local Chinese valve supplier, we offer highly responsive after-sales service:

Within the warranty period, if non-human-induced quality issues occur with the purchased Stainless Steel GB Standard Check Valve, simply contact the factory directly for replacement arrangements.

For uncertainties about the national standard details of flange connection during installation, our technical team will provide installation diagrams or even offer on-site guidance via phone.

For bulk purchases, we can provide customized working condition adaptation suggestions, saving you the trouble of looking up parameters in national standard manuals.

In fact, the core criteria for selecting and purchasing a check valve for pipelines are compliance and reliability—and Huadu’s GB check valve perfectly meets both requirements. Whether it is for small-batch part replenishment or centralized project procurement, it delivers optimal adaptability and cost efficiency.

Key attributes

Packaging