In the industrial pipeline system, disconnection is essential for safety, isolation of media and protection against leakage. The choice of a truly appropriate cut-off valve is not only about the efficiency of the equipment but also directly affects the safety of production and environmental protection. As a valve producer with a direct marketing model, we are committed to imparting professional choice to clients directly and clearly. This paper will explain why a “two-sealed” structure such as a two-sealed valve is not normally suitable for use as a valve cut-off and will analyse the selection points for professional valve cut-off。
I. Core contradictions in the dual-sealed structure: balance and leakage
In the case of two valves, for example, the core advantage of a “power balance” design for the core is that it can withstand a greater allowable pressure differential, but this advantage is at the expense of the ability to sever. Due to the inherent public differences between processing and assembly, it is difficult to achieve simultaneous and even close contact between its two seals at the time of closure, which directly results in leakage well above the threshold threshold stricto sensu。
Ii. Core requirements for valve disconnection: strictness of single-point sealing
As a dedicated cut-off valve, the primary and core performance requirement is an extremely low leakage rate, usually meeting ansi class iv, v or vi standards. This determines that its design rationale is very different from the two-sealed equilibrium structure. Specialized cut-off valves often use a single core, single valve “single-sealed” structure (e. G., high-performance single-seaps, ball valves, rotor valves, etc.), through sophisticated processing and strong executive force thrusts, to ensure that sealing by-products at the time of closure achieves ultra-heavy alignment on a single point, thus achieving a tight cut。
Iii. Meaning of the correct selection and value of the direct sale
The misuse of the two-sealed control valves to cut off the site not only fails to achieve effective process isolation, but may also result in safety hazards, material loss or environmental pollution as a result of continuous leakage. Therefore, when it comes to work conditions that need to be severed, the type of valve designed specifically for cutting should be clearly chosen. The selection of the manufacturer's direct marketing model means that you can communicate with us directly by obtaining professional advice on how to cut valves based on specific media characteristics, pressure temperature and leakage grade requirements, avoiding faulty product selection due to structural confusion and ensuring system safety。
