1. The safety valve should be installed upright and close to the protected equipment or pipeline. If not close to the arrangement, from the protected equipment or pipeline to the safety valve inlet total pressure drop, should not exceed 3% of the value of the relief valve.
2. The safety valve should be set up and maintenance platform. The safety valve should be considered when the safety valve is installed, the safety valve should be taken into consideration, and the boom should be set up if necessary.
3. The safety valve inlet pipe should be long radius elbow.
4. The design of the safety valve outlet pipe should consider the back pressure is not more than a certain value of the safety valve pressure. For ordinary spring type safety valve, the back pressure is not more than 10% of the value of the safety valve.
5. When the discharged vent Explorer or go to the flare header of the medium with the condensate liquid or gas condensation, safety valve outlet should be higher than the Explorer; otherwise, should take drainage measures.
6. And discharged into the closed system of the safety valve outlet pipe should be along the flow direction of the medium 45 degree slanting in the top of the exhaust duct, lest in duct condensate pour into the branch, and may reduce the back pressure relief valve.
7. When the safety valve inlet and outlet pipe is provided with a shut-off valve, should choose a single gate valve and lead Fengkai and stem shall be level installation, in order to avoid corroded or loose pin connected to the stem and the valve plate, the valve plate down. When the safety valve with bypass valve, the valve should be sealed off.
