Air Pressure Safety Relief Valve

Air Pressure Safety Relief Valve N10151002 is a specially designed brass valve for water heaters. Level safety valve with screw lock nut, which prevent the user from improper usage. The valve body is hot forged in one time, which provides better leakage tightness and stands for higher pressure. Each valve is set to rated pressure and 100% leakage test during production. 

The safety valve is a safety and protective valve, mainly used in pipelines and various pressure-bearing equipment. When the working pressure of the medium exceeds the allowable pressure value, the safety valve automatically opens to discharge the medium. As the pressure of the medium decreases, The safety valve will be closed again to prevent the danger of overpressure in the pipeline and equipment

When the pressure of the container exceeds the design regulations, the safety valve will automatically open to discharge the excessive pressure in the gas reducer to prevent the container or pipeline from being damaged. When the pressure in the container drops to the normal operating pressure, it is automatically closed to avoid exhausting all the gas due to over pressure in the container, resulting in waste and production interruption. 

different functions and applications require different types of safety valves, for example,  water heater safety valve, gas safety valve, compressor safety valve, steam safety valve, safety pressure relief valve, safety release valve.

depending on pipeline pressure needs, the brass radiator valves are designed with valve wall thickness and port sizes. The brass safety valve can adjust according to the water heater requirements, from 6.0MPa to 9.0Mpa. 

Thread types differ from markets and applications: BSP threads for Europe and NPT threads for North America, also other metric threads, which you must confirm before buying brass safety valves.

We currently work with HPb57-3 brass radiator valves for most customers in Europe and Asia, CW617N brass radiator valves for Europe, C377700 and lead free brass for North America.

1. Before installing brass safety valve, make sure the valve pressure conforms to water heater. The working pressure normally marked on safety valve body and water heater instructions.

2. Clean and remove any objects from the pipes (in particular bits of sealing and metal), which could obstruct and block the valves.

3. Ensure that both connecting pipes either side of the valve (upstream and downstream) are aligned (if they are not the brass safety valves may not work correctly).

4. Make sure that the two sections of the pipe (upstream and downstream) match, the brass safety valve will not absorb any gaps. Any distortions in the pipes may affect the tightness of the connection, the working of the valve and can even cause a rupture.

HPb57-3, HPb58-3, HPb59-1, HPb59-3 are most common materials used for China brass safety valve, which are acceptable for most countries in the world, except for those customers have special requirements.

Rough color is brass safety valve body sandblasted and without plating.

Electroplating (nickel-plating and chrome-plating) can enhance the corrosion resistance of brass safety valves, increase hardness, prevent abrasion, improve conductivity, smoothness, heat resistance.

1. Brass raw materials are bought from local suppliers in forms of brass bars.

2. Brass bars are cut into smaller pieces with different sizes according to order requirements, heated with natural gas.

3. The heated brass bars are forged by forging machines, Out-comings are semi-finished rough brass safety valve bodies.

4. The rough brass safety valve bodies are trimmed and cut off unnecessary parts.

5. The rough brass safety valve bodies are washed with sanding machines, to clean the dirty and oils during production.

6. The rough brass bodies are machined by CNC machinery for threads and dimensions.

7. The machined  brass safety valve bodies are nickel- or chrome-plated.

8. The brass valves are ready for delivery after final finished goods quality inspection.

Brass safety valve packing is very important for safe transport and brand appearance.

We pack brass safety valves in small inner boxes, then put into outer cartons, finally load in wooden pallets.

It will protect the goods well and can avoid damages and wet.

We also pack as per customers' OEM designs.

Our test laboratory equips with various devices for brass safety valve quality inspect and control, as well as new product development.

Equipment include material spectrometer analyzer, flow rate tester, torque tester, body resistance tester, endurance tester, high-low temperature tester.

These equipment enable us to analyze brass safety valve material compositions and type tests according to related standards, ensure our brass safety valves are correctly designed and produced.