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The valve flap of the H42 vertical lift check valve slides
along the central axis of the valve body under gravity. When pressure is applied at the inlet end, the valve flap overcomes the spring force to open. When the pressure at the inlet end is lower than at the outlet end, the spring presses the valve flap against the valve seat, preventing backflow and isolating the medium, achieving the function of stopping reverse flow.
If the vertical lift check valve is installed upright, it does not require an external spring, as the gravity of the valve flap and the pressure difference of the fluid can automatically achieve the function of stopping reverse flow. The vertical lift check valve has the characteristics of simple structure, fewer components, light weight, and reliability, making it widely used in industries such as petroleum, chemical, metallurgy, power generation, city water, etc.
Applications
The vertical lift check valve is widely used in chemical, petroleum,
stone, paper making, mining, electric power, LNG, food, pharmaceutical, electronics, and other industries requiring higher fluid quality control and cleanliness.
| Standard | Code |
| Design Standard | GB/T 12235 |
| Structure Length Standard | GB/T 12221 |
| Flange Connection Standard | JB/T 79 |
| Inspection and Testing Standard | GB/T 26480 |
| Test Pressure (MPa) | Nominal Pressure PN (MPa) |
| Shell Strength Test | 2.4 |
| Seal Test (Liquid) | 1.76 |
| Seal Test (Gas) | 0.5-0.7 |
| Applicable Medium | C: Water, Steam, Oil |
| Applicable Temperature | ≤ 425°C |
DN Dimensions Table
1.6MPa| DN | H | D | D1 | D2 | n-φd |
| 32 | 145 | 135 | 100 | 78 | 4-φ18 |
| 40 | 160 | 145 | 110 | 85 | 4-φ18 |
| 50 | 170 | 160 | 125 | 100 | 4-φ18 |
| 65 | 180 | 180 | 145 | 120 | 4-φ18 |
| 80 | 200 | 195 | 160 | 135 | 8-φ18 |
| 100 | 220 | 215 | 180 | 155 | 8-φ18 |
| 125 | 270 | 245 | 210 | 185 | 8-φ18 |
| 150 | 300 | 280 | 240 | 210 | 8-φ18 |
| 200 | 390 | 335 | 295 | 265 | 12-φ23 |
| Q: Can we visit your factory to inspect the products in person? |
| A: Of course, you are welcome to visit. Our products are built to withstand scrutiny, and we are very happy to have you here. We look forward to establishing a long-term trade partnership with you! |
| Q: Can you customize the products according to the specifications and appearance I require? |
| A: Yes, we can adjust our production lines to meet your required specifications and product appearance, including color. |
| Q: What if there is no Chinese translator when we visit the factory? |
| A: We will hire relevant translators based on your language needs to ensure smooth and efficient communication. |
| Q: What market share do your products occupy in China? |
| A: From 2021 to 2024, our company's annual turnover ranged from 50 million to 100 million RMB, capturing a large share of the Chinese market. |
| Q: What are your competitive advantages compared to other companies in the industry? |
| A: Brand reputation. Our company does not compete on price, but rather on quality. We invest substantial funds into production materials, advanced equipment, and skilled technicians, focusing on building a strong brand image and a positive company reputation, rather than engaging in price competition. |
Quality (Shandong) Industrial Automation Co., Ltd. is located in Zibo City, Shandong Province, China, an area rich in cultural heritage, with a strong industrial foundation and a high level of production concentration. We are a high-tech valve manufacturing enterprise integrating design and development, manufacturing and installation, sales and service, technical communication, and international trade.
Based on conventional valves, the company actively applies new technologies, materials, and processes to research and manufacture various high-end valves, as well as general high and medium-pressure gate valves, globe valves, check valves, ball valves, etc. All products are designed, manufactured, and processed according to standards such as GB, ANSI, API, JIS, DIN, and BS. Additionally, we are capable of researching, designing, and developing high-performance special valves and non-standard products based on customer needs.
Our products are widely used in industries such as petroleum, chemical engineering, metallurgy, and power generation, and are suitable for various complex working conditions such as high temperature, high pressure, sulfur resistance, corrosion resistance, and erosion resistance.
