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1. Core Functions of External Safety Valves
Overpressure Protection Mechanism
When the outlet pipe is blocked or the valve is misoperated, the safety valve automatically opens when the pressure exceeds the set value (usually 1.1-1.2 times the design pressure), allowing the medium to flow back to the inlet, preventing overload and damage to the pump.
Material Protection Features
Compared to single-use protection devices such as bursting discs, external safety valves provide continuous pressure regulation without material loss, making them particularly suitable for high-value media (such as food and pharmaceutical raw materials).
The safety valve should be installed vertically, ≤1m from the pump outlet. Support brackets should be installed on the outlet pipe (2-5m apart).
10. Avoid right-angle elbows. Prefer elbows with a curvature radius ≥ 3 times the pipe diameter.
Commissioning and Inspection
An air pressure test (1.5 times the operating pressure) is required to verify tightness upon initial commissioning.
6. Regularly check spring preload. Quarterly inspection is recommended for corrosive environments.
Lobe pump Parameter choose:
1. Core Functions of External Safety Valves
Overpressure Protection Mechanism
When the outlet pipe is blocked or the valve is misoperated, the safety valve automatically opens when the pressure exceeds the set value (usually 1.1-1.2 times the design pressure), allowing the medium to flow back to the inlet, preventing overload and damage to the pump.
Material Protection Features
Compared to single-use protection devices such as bursting discs, external safety valves provide continuous pressure regulation without material loss, making them particularly suitable for high-value media (such as food and pharmaceutical raw materials).
The safety valve should be installed vertically, ≤1m from the pump outlet. Support brackets should be installed on the outlet pipe (2-5m apart).
10. Avoid right-angle elbows. Prefer elbows with a curvature radius ≥ 3 times the pipe diameter.
Commissioning and Inspection
An air pressure test (1.5 times the operating pressure) is required to verify tightness upon initial commissioning.
6. Regularly check spring preload. Quarterly inspection is recommended for corrosive environments.
Lobe pump Parameter choose:
