Safety Valve (Safety Valve) or Safety Valve is an indispensable safety device in the pressure pipe system. by preventing the pressure in the system to be higher than the specified
Safety Valve serves to automatically drain excess pressure from the system. When the internal pressure reaches the set point (Set Pressure), the valve opens itself to release the fluid. It will automatically turn off when the pressure drops to normal.
The main features of a good safety valve include:
- Set Pressure Accuracy — Turns on at the specified pressure precisely. not open before or after too
- Tight shutoff — when the pressure returns to normal. The valve must be completely closed without leaking.
- Environmental Resistance – Resistance to temperature, pressure and flow type in the system.
- Fast response — turns on and off immediately when the pressure reaches or is below the specified point.
- Suitable materials — such as brass (Brass) for general water applications. or stainless steel for high corrosion
Safety Valve found in industrial and general technicians in Thailand. Can be divided according to the structure into 2 main types: 1. Lever type 2. Without a handle (No lever type / screwed cap) each of which has different strengths and suitability for different tasks.
Safety Valve with a handle, use a lever (lever) to transfer force to the valve disc.
The part without a handle uses the spring force directly and closes with a tight cap (Screwed Cap). Suitable for limited installation areas
Safety Standards — Which jobs require a safety valve with a handle?
- Steam and air systems are often required to use a safety valve with a handle to test the operation in actual use.
- for hot water or liquid work using a rocking handle Do not have a leak on the handle at all. And if not necessary, choose a cover instead.
