Pneumatic hydraulic safety valve is a safety device widely used in hydraulic power system and hydraulic equipment. It can also be used as a pressure limiting device. It is a special valve, which is different from the traditional valve. The traditional valve is powered by mechanical metal spring, which can only limit the medium and low pressure. When the pressure exceeds 10MPa, it can only be used to increase the volume of the pressurization design, so the traditional valve When the door acts on the high-pressure and ultra-high-pressure hydraulic power system and hydraulic equipment, it is bound to be bulky, complex in structure, difficult to manufacture and high in product cost; the fatigue change of the metal spring in the use process makes the pressure limit parameters fluctuate greatly, which needs to be adjusted frequently to ensure normal use. Because the spring material is too rigid to be made of stainless steel and other anti-corrosion materials, the anti-corrosion ability of the product is poor, and the service life of the valve is not long. 

Pneumatic hydraulic safety valve is a safety device widely used in hydraulic power system and hydraulic equipment. It can also be used as a pressure limiting device. It is a special valve, which is different from the traditional valve. The traditional valve is powered by mechanical metal spring, which can only limit the medium and low pressure. When the pressure exceeds 10MPa, it can only be used to increase the volume of the pressurization design, so the traditional valve When the door acts on the high-pressure and ultra-high-pressure hydraulic power system and hydraulic equipment, it is bound to be bulky, complex in structure, difficult to manufacture and high in product cost; the fatigue change of the metal spring in the use process makes the pressure limit parameters fluctuate greatly, which needs to be adjusted frequently to ensure normal use. Because the spring material is too rigid to be made of stainless steel and other anti-corrosion materials, the anti-corrosion ability of the product is poor, and the service life of the valve is not long.