You owner of owner-occupied dwelling. Heat source in the closed system hot water supply or heating of your house serves, for example, gas boiler. In this case, according to requirements of the operating security system, the elements limiting growth of pressure of working environment over permissible values have to be established. Such element of the pipeline equipment is the pressure safety valve.
Instruction
1. Define standard size of the safety valve so that pressure in the pipeline equipment was not above permissible values. At any emergency situations correctly picked up valve has to ensure stable functioning of engineering systems in the range of the required pressure.
2. The wrong choice of devices of repeated operation is fraught with emergence of emergencies. Pressure loss at login, for example, threatens with emergence of counter-pressure, that is the excessive pressure arising when dumping the environment. And it provokes various violations in operation of the pipeline equipment.
3. Choose the spring safety valve in which the compressed spring counteracts pressure of working environment. In case dumping of working environment happens directly in the atmosphere, the pressure safety valve of open type is necessary for you. It works without counter-pressure. When dropping working environment in the lateral pipeline the valve of the closed type working with counter-pressure is necessary.
4. Proceeding from the flow capacity of working environment and lifting height of the valve core, choose the low-lifting (low-lifting) pressure safety valve or the full-lift valve. The first is usually applied with lifting height of valve core within 0.05 Ø of saddle. If your heating boiler uses liquid fuel, without claims for big flow capacity, then you will just suit the low-lift safety valve.
5. If you have gas boiler, you need to buy the full-lift safety valve. Its size of raising of the valve core corresponds 0.25 Ø saddles. In this case the valve opens at full capacity the valve core. Safety valves can be in two executions – with the tame doubler or without him.
6. Treat the choice of the safety valve very seriously. Reliability of engineering networks of your house depends on quality, control and trouble-free operation of this element. Entrust it protection of your housing against flooding at rupture of pipeline and other troubles.