SQW sterile sampling valve

application

The sterile sampling valve is mainly used for collecting material samples from tank equipment or pipelines, and requires sterilization treatment before and after each sampling. No dead corners, thorough sterilization, continuous and sterile sampling at any time. Widely used in industries such as food, brewing, beverages, dairy products, toothpaste, cosmetics, biopharmaceuticals, etc.

technical parameter

Specification: DN6 DN15

Connection method: welding, clamp, thread

Maximum working pressure: ≤ 8bar

Maximum sterilization pressure: ≤ 3bar

Working temperature: -10 ℃ to 120 ℃

◆ Maximum sterilization temperature: 120~150 ° C:

◆ Part in contact with materials: SS316L Other components SS304

◆ Internal surface contact product: Ra ≤ 0.4 μ M

◆ Sealing element: SI/EPDM

operational principle

This sterile sampling valve is mainly divided into several components: handwheel, bracket, valve core, spring, valve body, and diaphragm sealing ring. When in the closed state, rely on counterclockwise rotation of the handwheel to loosen the valve core (until the handwheel is in the neutral position), and the valve core will press the sealant head tightly onto the inlet of the valve body material to achieve sealing effect; If sampling is required, steam or other sterilization medium is introduced from one (usually the lower) sampling port to fill the entire sample chamber and export it from the other sampling port. After a certain period of action, the sample chamber and sampling port are kept in a sterile state; Then, by rotating the handwheel clockwise and pulling the valve core, the sealant head is detached from the material inlet of the valve body, allowing the sample to flow out of the tank through the sample chamber and be collected from the sampling port; After sampling is completed, rotate the handwheel counterclockwise to loosen the valve core, and then press the sealant head onto the material inlet of the valve body again through the valve core; Inject clean water to discharge the residual liquid in the sample room (if the sample is a clean medium such as sterile water, this step can be omitted), and then inject sterilization medium for sealing and retention until the next sampling.

Schematic diagram of working principle

Schematic diagram of sampling status and sterilization status