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Insulation gear pumps with insulation jackets cannot have their own safety valves, so an external safety valve needs to be installed on the outlet pipe.
1. The valve seat of the heat preservation gear pump should be fixed on the valve body and must not be loosened. The full-open safety valve should be equipped with an organization that restricts the opening height.
2. Even if there is some damage to the safety valve of the heat preservation gear oil pumps, it should be able to reach the additional displacement. When the tension spring is damaged, the valve flap and other parts will not fly out of the valve body.
3. Insulation gear pumps should conduct pilot seal and main valve seal and open action experiments on pilot safety valves, respectively, and all should meet the functional requirements of the regulations.
4. For safety valves for toxic or flammable media, it is necessary to choose closed safety valves, and to avoid leakage at the valve cover and maintenance cover gasket.
5. The safety valve for the SS heat preservation gear pump steam must be equipped with a wrench. When the medium pressure reaches more than 75% of the set pressure, the wrench can be used to promote the valve flap. The wrench should not prevent the action of the valve.
6. For safety valves with additional back pressure, a back pressure balance organization should be set according to the size and change of the pressure.
7. In order to avoid the loosening of the tissue that adjusts the amount of tension of the tension spring, and to change the adjusted pressure at will, it is necessary to install anti-loosening equipment and add a lead seal.
+8617731766260/15094407290
+86-317-8227664
+8615094407290