Faden Valve Xi'an Freeze Drying Machine Flange Ball Valve Automatic Control Ball Valve

The energy required for cooling and heating food is driven by a circulation pump and conducted to the shelf through a heat exchange medium, and then to the food. The cold source for cooling food is provided by the refrigeration system, and the heat source for heating food is provided by the heating tank. The switching between cooling and heating is achieved by controlling the electromagnetic valve switches of the cold and heat sources. When the temperature rises, steam enters the heating tank to heat the medium. A pneumatic three-way regulating valve is used to adjust the mixing ratio of the heat medium from the heating tank and the reflux heat medium from the shelf, and the opening and closing of the water operated valve for cooling the plate heat exchanger is controlled to control the temperature of the shelf. VATTEN Germany provides you withFreeze dryer electric flange ball valve Shandong 380V self-control 304 ball valveNot just a change!

Freeze dryer electric flange ball valve Shandong 380V self-control 304 ball valve

1. Designed according to the high platform ISO5211 standard, it can be connected and installed with the actuator without the need for other brackets or connecting shafts.

2. Adopting silica sol precision casting, it has a beautiful appearance, tight and reliable sealing, good sealing performance, and a wide range of applications.

3. Anti static function, a spring is installed between the ball, valve stem, and valve body to dissipate the static electricity generated during the switching process.

4. The fluid resistance is small, and the full bore ball valve has almost no flow resistance. It opens and closes quickly, and only needs to rotate 90 ° from full to full, making it easy to operate.

Valve testing methods

1.1 Strength test

Valves can be regarded as pressure vessels, so they need to meet the requirement of withstanding medium pressure without leakage. Therefore, the blanks of valve bodies, valve covers and other parts should not have defects such as cracks, loose pores, slag inclusions that affect strength. In addition to strict inspection of the appearance and internal quality of the blanks, valve manufacturers should also conduct strength tests on each unit to ensure the performance of the valves.

Strength testing is generally conducted after final assembly. For parts with unstable blank quality or parts that require heat treatment after welding repair, in order to avoid and reduce various wastes caused by unqualified tests, intermediate strength tests (often referred to as rough pumps) can be conducted after rough machining of the parts. After the final assembly of the parts that have undergone intermediate strength testing, if the user does not request it, the valve may no longer undergo strength testing. In order to ensure quality, Su Valve conducts strength tests on all valves after the intermediate strength test.