Ф 80mm, Ф 130mm Caliber Pressure Relief Valve And Directional Oil-Spraying Pressure Relief Valve are mainly used on the oil-tank of large-scale oil-immersed transformer and reactor. For the caliber pressure relief valve and the directional oil-spraying pressure relief valve, the user can choose when ordering the product according to the needs(two road electric signal systems respectively stand alone the lead-out). The pressure relief valve still can increase the ability of computer electric warning except the ability of the convention electric warning.

Type：YSF-50

Injection aperture（mm）：25-50mm

Working pressure range（bar）：0.2~0.7

Application：

The pressure release valve is suitable for oil-immersed power transformer, power capacitor and intercepting switch to protect the oil tank.

When the oil-immersed transformer fails in operation, because of the coil overheating, part of the transformer is electrified, and the pressure in the transformer tank increases rapidly. At this time, the pressure release valve moves quickly within 2ms to protect the tank from deformation or burst. When the pressure in the tank rises again and reaches the opening pressure, the pressure release valve operates again until the pressure in the tank drops to normal. At the same time, it can also effectively prevent the external air, dust, impurities, water vapor and other entry into the running transformer, so as to protect the transformer from damage.

working condition： 

1.ambient temperature range：-30℃～+50℃

2.installation site: you can make sure where relief valve is installed on the oil tank

Our Advantage：

* Lightning-withstand

* Anti-corrosion

* Rustproof

* Mature brass processing