seal test pressure

基本解释

Disc has two-way bearing, perfect seal, without leakage under the pressure test.
阀板可双向承压，达到完全密封，气体试验泄漏为零。
Especially suitable for the performance test of safe valve seal pressure, ration, open and return pressure.
专用于法兰式安全阀的密封压力、整定、开启、回座压力的性能试验。
Low pressure seal test 4.4.1 for low pressure seal test, the sealing surface should be kept clean, no oil, no grease and seal fat, For to prevent scratches.
低压密封试验4.4.1 进行低压密封试验时，低温阀门密封面应保持干净，无油、无油脂和密封脂，如需防止擦伤。