Leser safety valve 4834.7712 in stock, widely used in the pharmaceutical industry

Leser safety valve 4834.7712 in stock, widely used in the pharmaceutical industry

Main technical requirements for safety valves in pharmaceutical equipment

1. Safety and reliability

-Set pressure: The set pressure of the safety valve is generally taken as 1.1 times the working pressure and shall not exceed the design pressure of the equipment.

-Valve body structure: Adopting a closed spring (or fully open) structure, vertically installed and directly connected to the equipment housing to ensure fast and reliable pressure relief action.

-Back pressure limitation: The design of the outlet pipeline must meet the requirements of back pressure limitation to prevent back pressure from affecting the valve opening performance.

-Sealing: Before leaving the factory, it is necessary to conduct hydraulic/pneumatic tests on the shell, cold differential pressure adjustment, sealing tests, etc., to ensure no leakage and meet the specified release capacity and opening height.

2. Material and hygiene requirements

-Corrosion resistant materials: Valve bodies, valve seats, springs, and other components are often made of acid, alkali, and high temperature resistant materials such as 316L stainless steel, copper alloys, and titanium alloys to adapt to strong corrosive media in pharmaceutical processes.

-Surface treatment: Electrical polishing and smooth design must be carried out to comply with hygiene standards such as FDA, USP VI, EHEDG, ASME BPE, etc., to prevent microbial residues and cross contamination.

-CIP/SIP compatibility: Valves should be able to withstand the high temperature steam or strong acid-base cleaning agents used for CIP (cleaning) and SIP (sterilization) * *, with a temperature resistance of over 150 ℃.

3. Connection and installation

-Flanges or threads: The cross-sectional area of the valve inlet pipeline shall not be less than the cross-sectional area of the valve port, and the connecting pipe shall be short and straight, with a pressure drop of ≤ 3% of the set pressure.

-Protective device: The valve body is equipped with a tamper proof lock (padlock+key) to prevent accidental operation or unauthorized adjustment.

-Discharge pipeline: The discharge outlet must be unobstructed, straight through, and equipped with appropriate discharge valves or noise reduction devices to ensure that the medium is quickly discharged and does not backflow during pressure relief.

4. Testing and maintenance

-Factory inspection: Safety valves need to pass 33 or more quality inspections, including pressure calibration, discharge testing, corrosion resistance verification, etc. The inspection standards are often stricter than regulatory requirements.

-Regular inspection: During use, the sealing surface, spring tension, and set pressure should be checked regularly and recorded to meet the maintenance requirements of GMP for critical safety devices.

5. Regulations and Certification

-It must comply with international standards such as the Pressure Equipment Directive (PED), ASME Section VIII, ISO 4126-1, and obtain CE marking, ATEX (Explosion proof), or US/European special equipment certification to meet regulatory requirements in different regions.

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Summary

The safety valve of pharmaceutical equipment must meet the standards of safety and reliability, material hygiene, strict connection and installation specifications, and a complete testing and maintenance system in order to ensure the pressure safety, product purity, and compliance with GMP requirements in the pharmaceutical production process. The above points are all derived from industry standards, technical specifications, and the latest product cases.

Leser safety valve 4834.7712 in stock, widely used in the pharmaceutical industry

The German LESER 4834 series safety valve is a high-performance safety valve designed specifically for hygiene industries such as food, beverage, medicine, and chemical. With its structural design, strict material selection, and extensive certification support, it can meet the application scenarios of high cleanliness and high safety requirements. The characteristics of this series of products are as follows:

1. Sanitary grade design：

• Using sterile flange or sleeve connections, as well as sterile threaded connections, to ensure the hygiene and safety of valves and piping systems.

• All elastic sealing components are exposed, easy to clean and disinfect, and prevent microbial growth.

• Springs have a very wide adjustment range to adapt to pressure requirements under different working conditions.

• Single stem, dual guide, center positioning ball design ensures excellent sealing and service life of the safety valve.

2. No dead zone design：

• The safety valve body adopts a dead zone free design, which avoids the possibility of residual medium during the discharge of the safety valve, thereby preventing the risk of cross contamination.

• Few components, strong interchangeability, compact exterior structure, simple and convenient disassembly and assembly, easy to clean and maintain. The set pressure of the safety valve after cleaning does not need to be recalibrated, saving time and cost.

3. high-performance materials：

• The valve body is made of 316 and 316L stainless steel, which has good corrosion resistance and high temperature resistance.

• The surface of the valve body and upper cover is subjected to electric polishing treatment, resulting in low surface roughness and difficulty in adhering to media, further improving hygiene performance.

• The nozzle and valve core are made of stainless steel materials such as 316 and 316L, and the sealing surface adopts non-metallic soft sealing to ensure reliable sealing performance.

4. safety protection：

• Adopting a closed valve cover design to prevent medium leakage and external pollution.

• The use of EPDM bellows for sealing the upper cover and valve stem improves the reliability and durability of the seal.

Leser safety valve 4834.7712 in stock, widely used in the pharmaceutical industry