Fire pressure switch is the pressure change of water pressure into electrical signal output fire controllable switch. It is one of the indispensable components of various automatic sprinkler systems, often used in conjunction with wet alarm valves, rainfall valves, pre-action systems, etc., to transmit alarm action signals, and fire pump control box switching, fire pumps can be started. Fire pressure switch is usually installed in the wet alarm valve alarm piping or pre-action system in the pipe network.
Working Principle
When the water pressure or air pressure reaches the specified value, the micro-switch contacts in the fire protection pressure switch actuate and output an electrical signal to the fire protection control room.
Application Areas
Widely used in fire, water and electricity, water, petroleum, chemical, machinery, hydraulic and other industries, the pressure of the fluid medium for on-site measurement display and control.
Product Parameters
Product Model | YLKG-16C |
Valve body material | Carbon Steel |
Nominal pressure | ≤1.6Mpa |
Applicable medium | fire-fighting water |
Applicable temperature | ≤80°C |
Pressure switch technical parameters
Diethylammonium chloride | Intelligent digital pressure switch |
range (of scales or measuring equipment) | 0~2.5Mpa |
overload pressure | 150% |
Upper and lower limit settings | Programmable within the range |
Alarm Methods | Relay signal (upper limit open, lower limit closed) |
Accuracy Class | ±0.5%FS |
long term stability | Typical: ±0.2%FS/year |
load capacity | 250VAC 10A |
Supply Voltage | 24VDC |
operating temperature | -20~80℃ |
Compensation temperature | -10~60℃ |
Electrical protection | short circuit protection Anti-reverse connection protection (for DC supply) Anti-Electromagnetic Interference Design |
sampling frequency | 5 times/second |
Measuring medium | Gases or liquids compatible with 316 stainless steel |
pressure port | M20*1.5 |
Joint Material | 304 Stainless Steel |
Housing Material | engineering plastics |
Definition of Lineout | Power: Red Blue Output: Black White (passive signal) |
Pressure Switch Size Reference

Pressure Switch Wiring Diagram













