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Contact:Miss Cheng

Address:No. 6, No. 18 Zhongtai science and Technology Park, No. A02, Huayuan Road, Garden Road, Baohe Economic Development Zone, Hefei

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Installation of Marine Safety Valve and Key Points of Preset Pipeline Installation

1. Marine safety valves should be installed steeply and close to facilities or pipes that are cared for as much as possible. If the installation is not accessible, the total pressure drop of the pipeline from the facilities or pipelines to the entrance of the marine safety valve should not exceed 3% of the fixed pressure value of the marine safety valve.
2. Marine safety valves should be equipped with inspection and repair platforms. When installing heavy marine safety valve, we should consider the possibility of lifting after disassembly of the marine safety valve. When necessary, we should install hangers.
3. The long radius elbow should be used for the inlet pipeline of marine safety valve.
4. The presupposition of the outlet pipeline of the marine safety valve should be considered. The back pressure should not exceed a certain value of the constant pressure of the marine safety valve. For ordinary spring type marine safety valve, its back pressure does not exceed 10% of the fixed pressure value of the marine safety valve.
5. When the medium discharged into the empty main pipe or the flare main pipe contains condensate or condensable gas, the outlet of the marine safety valve should be higher than that of the main pipe; otherwise, the method of discharging liquid should be adopted.
6. The outlet pipeline of the marine safety valve discharged into the tightly sealed closed system shall flow along the medium to 45-deg, and be obliquely connected to the top of the discharge main pipe so as to avoid the reverse flow of condensate from the main pipe into the branch pipe and to reduce the back pressure of the marine safety valve.
7. When a shutoff valve is installed on the inlet and outlet pipelines of the marine safety valve, a single gate gate valve should be selected and sealed with lead. The stem should be water free from dangerous loading, so as not to cause the valve plate to slide when the pin connecting the stem and the valve plate corrodes or relaxes. When a marine safety valve is equipped with a bypass valve, the valve shall be sealed with lead.
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Contact:Miss Cheng
Telephones:86-13524555517  
Address:No. 6, No. 18 Zhongtai science and Technology Park, No. A02, Huayuan Road, Garden Road, Baohe Economic Development Zone, Hefei
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