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Negative pressure safety valve working principle introduction

The negative pressure relief valve calibrates a specific pressure by adjusting the spring's compression nut. Calibration pressure is the maximum safe pressure value to avoid equipment damage. At normal working pressure, the valve is closed; when the system pressure exceeds the calibration pressure, the valve opens. The vacuum safety valve is a sanitary stainless steel valve. Its safety design makes it protect the equipment. Therefore, it is installed in the circuit of discharge pressure to protect the pipeline, pump, device and storage tank. Widely used in food, beverage, dairy, pharmaceutical, beer and other industries. Negative Pressure Safety Valve Operation The negative pressure relief valve calibrates a specific pressure by adjusting the spring's compression nut. Calibration pressure is the maximum safe pressure value to avoid equipment damage. At normal working pressure, the valve is closed; when the system pressure exceeds the calibration pressure, the valve opens. The pressure in the piping system is released to protect the piping and equipment. The safety valve is a special type of valve that has undergone strict calibration at the factory, but in order to make the valve more suitable for the actual operating conditions, the valve should be verified on site as soon as possible. It adds a pneumatic opening device for CIP cleaning of safety valves and their piping. Negative pressure relief valve technology options from DN25-1" to DN65-3" Pressure operating range (change spring) Solder, clamp, thread, flange connection (mm or inch) Maximum working pressure: 10 bar Operating temperature: -10 °C To 120 ° C (140 ° C for short periods or disinfection) Compressed air pressure: 5bar-7bar Gas supply connection: R1/8" (BSP) Contact with the material: 1.4404 / AISI 316L 1.4301 / AISI 304 Other stainless steel parts: 1.4301 / AISI 304 Inner surface contact product: Ra≤0.8μm Electropolished External surface treatment: Polished seal: EPDM complies with FDA 17.2600 (according to the sound of the valve)

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