seal test pressure

基本解釋

Disc has two-way bearing, perfect seal, without leakage under the pressure test.
閥板可雙向承壓，達到完全密封，氣體試驗泄漏為零。
Especially suitable for the performance test of safe valve seal pressure, ration, open and return pressure.
專用于法蘭式安全閥的密封壓力、整定、開啟、回座壓力的性能試驗。
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.
低壓密封試驗4.4.1 進行低壓密封試驗時，低溫閥門密封面應保持干凈，無油、無油脂和密封脂，如需防止擦傷。