Discussions and suggestions regarding domestic and imported high-pressure valves

1. Price factors and lead time: Domestic high-pressure valves are usually more cost-effective than imported valves, and their lead time is also shorter. 2. Years of use and replacement time: The specific years depend on the actual usage patterns of each company, while the timing of the first replacement is also determined by the frequency of use and maintenance practices. 3. Reasons for replacement: mainly include internal leakage, wear and tear, external leakage, and difficulties in operating the switch. 4. Number of replacements: This depends on the size of the enterprise and the frequency of valve use; the specific proportion needs to be determined based on actual conditions. 5. Subsequent procurement or replacement: The choice between domestic or imported products depends on the performance of those previously used and cost considerations. 6. Manufacturer information: This involves trade secrets, and specific manufacturers are generally not disclosed; choices can be made based on market reviews and product quality. 7. Valve protection measures: Conduct regular maintenance inspections, promptly clean and replace damaged components, and use high-quality accessories and lubricants. The above answers are for reference only; specific decisions should be made through detailed analysis based on the actual situation of the enterprise. .

It seems that people still aren’t willing to get involved. We’re also facing difficulties such as prices, leadership decisions, performance, and the time required for returns, among other things.

Indeed, when selecting high-pressure valves, various factors need to be taken into account, including price, quality, lead time, after-sales service, etc. In the decision-making process, evaluation and selection can be carried out based on the following points: 1. **Cost-benefit analysis**: Weigh the costs of domestic and imported high-pressure valves against their expected performance to select the option with the best cost-performance ratio. 2. **Leadership Decision-Making**: Decisions are made through collective discussion, taking into account the company’s strategic direction and financial situation, as well as the opinions of technical staff and the procurement department. 3. **Market Research**: Thoroughly understand the performance metrics, customer feedback, and after-sales service of high-pressure valve brands available on the market, in order to select brands with a good reputation. 4. **Pilot testing**: Conduct small-scale trials on the selected high-pressure valves to assess their performance in actual production and verify whether they meet the requirements. By taking all relevant factors into consideration and conducting thorough preliminary research and pilot tests, decisions can be made more effectively to ensure production safety and efficiency. .

In the urea production process, the selection of high-pressure valves is a critical issue, involving aspects such as price, lead time, service life, and maintenance costs. Price factors and lead time issues: Imported high-pressure valves are usually expensive, which is mainly due to factors such as brand premiums, technical patents, transportation costs, and customs fees. Domestic high-pressure valves are relatively affordable, with shorter delivery times, as domestic production, transportation, and after-sales service are more convenient. Time of use and first replacement time: As for when high-pressure valves were first put into use and when they were replaced for the first time, this is related to the installation date of the equipment, its operating conditions, the frequency of switching on and off, as well as maintenance practices (daily upkeep). I can’t remember exactly in which year they were replaced during a major repair ； It has a pretty long service life. Reason for replacement: internal leakage ； Number of replacements and overall proportion: within 5% ； Options for subsequent purchase or replacement: When purchasing or replacing high-pressure valves in the future, various factors such as price, performance, lead time, and after-sales service are typically taken into consideration. There may be a tendency to choose imported valves to ensure higher performance and a longer service life ； Depending on the location of use and replacement plans, cost-effectiveness and lead time may be given more importance, so domestic valves are chosen. Manufacturer information: When selecting high-pressure valves, companies should choose manufacturers with a good reputation and strong capabilities. These manufacturers usually have advanced production equipment and technical teams, enabling them to produce high-quality products and provide professional after-sales service. Methods for protecting high-pressure valves: In the urea production process, the methods for protecting high-pressure valves mainly include regular inspection, cleaning, lubrication, and timely replacement of damaged components. Regular inspections can help identify and address potential fault risks in a timely manner ； Cleaning helps maintain the cleanliness and sealing performance of valves ； Lubrication can reduce wear and friction on valves ； Replacing damaged components in a timely manner can ensure the proper operation of the valve and extend its service life. In addition, enterprises should also establish a comprehensive valve management system and maintenance procedures to ensure the long-term stable operation of valves.

What is the high-pressure range you mentioned? You might want to try the zero-friction series of valves, whose overall lifespan is many times higher than that of traditional valves.

In urea systems, the term \"high-pressure range\" refers to the pressure range for valves in such systems. The operating pressure in the CO2 stripping method is generally 14.0 MPa or higher; it is slightly higher in the ammonia stripping method, and even higher for aqueous solutions. I’m not sure whether your company is involved in this area. Not only pressure is important, but material selection is also a crucial factor to consider.

Material is not an issue. As for pressure, for now our type tests have only been conducted up to 10 Mpa. Later on, we will accelerate the type tests under higher pressures. In terms of service life alone, we are far ahead of valves with traditional friction seals. The main advantage of zero friction is that the sealing surfaces remain in a friction-free state throughout the process of opening and closing the valve; without friction, there is no wear, which extends the service life.