Safety Valve 102795

Safety Valve, Part Number: 102795

Purpose

This safety valve is a critical protective component installed on gas engines. Its primary function is to prevent dangerous overpressure conditions within the crankcase. In the event of a severe internal fault (e.g., a combustible gas leak or ignition), rapid pressure buildup could damage the engine or pose a safety risk. The valve acts as a mechanical relief device, automatically opening to vent this excess pressure to a safe outlet, thereby safeguarding the engine's structural integrity.

Function & Operation

The valve operates on a simple, pressure-activated spring mechanism.

Normal Operation: Under normal crankcase pressure, the spring force keeps the valve tightly sealed.

Overpressure Event: If pressure exceeds the valve's pre-set calibration threshold, it overcomes the spring force.

Relief Function: The valve disc lifts, creating an opening. This allows the high-pressure gases to be discharged rapidly from the crankcase.

Resealing: Once the internal pressure drops back to a safe level below the set point, the spring force automatically re-closes the valve, restoring the seal.

Key Usage Notes

Safety Device: It is a last-line safety mechanism. Its activation indicates a serious engine fault that requires immediate investigation and shutdown.

Maintenance: The valve must be inspected regularly as per maintenance schedules. It should be checked for freedom of movement, signs of leakage, and corrosion. Never attempt to adjust or block the valve during operation.

Replacement: If activated, damaged, or due for scheduled replacement, it must be replaced with a correct, calibrated unit (like part 102795) to ensure proper set pressure and reliable performance.

In summary, the 102795 safety valve is an essential, automatic mechanical protector that vents dangerous crankcase overpressure to ensure engine and operational safety.