Valve model ZA40H-16C

This is a new type of national standard short-series gate valve. It features low fluid resistance and a wide range of applicable pressures and temperatures, and is used to shut off or connect the medium in pipelines. Currently, gate valves in China generally use a design structure from the 1970s. Compared with advanced gate valves from countries such as the United States and Japan, they have a bulky structure, a limited range of valve body materials, and unreliable sealing performance. Especially for low-pressure gate valves with a pressure rating of PN1.0MPa, cast iron is the only material available in China. Cast iron gate valves often suffer from serious problems such as freezing and cracking of the valve body and detachment of the gate plate. The carbon steel valve stems in these valves are prone to rusting, and the quality of the gasket materials is poor, resulting in severe internal and external leaks. For applications involving corrosive media, there is a shortage in China of stainless steel gate valves with PN1.0MPa ratings suitable for low-pressure systems. Using gate valves with higher pressure ratings as substitutes not only increases the investment costs for such projects but also leads to unnecessary waste of stainless steel material. Features: ① Meets the requirements of advanced domestic and international standards, with reliable sealing and excellent performance. ②The valve body is available in a wide range of materials, and the packing and gaskets can be selected appropriately based on actual operating conditions or customer requirements, enabling use in various pressure, temperature, and medium conditions. ③It features a wedge-shaped elastic gate plate structure, with rolling bearings installed for medium and large diameters, enabling easy opening and closing. ④A variety of piping flange standards and flange face types can be used to meet various engineering requirements and customer needs. ⑤A low-pressure carbon steel gate valve with a pressure rating of PN1.0MPa has been developed, which can replace iron gate valves. It effectively solves problems such as the tendency of cast iron gate valve housings to crack due to freezing, the tendency of the gate plates to fall off, the tendency of the valve stems to rust, and unreliable sealing performance. ⑥A low-pressure stainless steel series of gate valves with PN1.0MPa pressure has been developed, which can be used in various environments with corrosive media, helping to reduce costs and save materials. Flanged steel gate valves are suitable for various pipelines with a nominal pressure of PN1.0 to 16.0 MPa, and operating temperatures ranging from -29 to 425°C for carbon steel and from -40 to 200°C for stainless steel. They are used to shut off or allow the flow of media in these pipelines. By selecting different materials, it can be used with various media such as water, steam, oils, nitric acid, acetic acid, highly oxidizing substances, and urea. The drive methods include manual operation, bevel gear transmission, and electric drive.

I learned about it; I thought it was a dark-stem gate valve. Is it a wedge-type valve with a short structural length? :L:'( How does the price compare to that of ordinary wedge-type elastic gate valves?

It adopts a wedge-shaped elastic gate structure. Aren’t ordinary valves also equipped with a wedge-shaped elastic gate structure?

What does the letter A in the valve represent?

It should represent the operating conditions of this valve!

It seems that what the people upstairs said isn’t very clear; it should mean the following: gate valve, flange connection, elastic gate plate, nominal pressure of 1.6 Mpa, and valve body made of carbon steel.

Upstairs, the original poster wants to know what A means I looked around, but still no one answered! ZA40H-1.6C Z: Gate Valve A: ? ? 4: Flange connection 0: Elastic gate H: Material of the valve seat sealing surface; H refers to alloy steel 1.6: Nominal pressure of 16 kilograms C: Material of the valve body, carbon steel. According to CVA2.1-84 \"Method for Naming Industrial Valves for General Use\", A: Indicates special operating conditions, low temperature (below –40 degrees)

According to JB/T308-2004, D denotes the low-temperature type (valves that can be used at temperatures below 40 degrees Celsius); I have indeed never seen A