Design specification:

Design standard: BS 1873, GB/T12235, ASME B16.34

Structure length: ASME B16.10, GB/T 12221

Connection standard: ASME B16.5, ASME B16.25, GB/T 9113, JB/T 79, HG/T 20592

Pressure test: API 598, GB/T 13927, GB/T 26480, JB/T 9092

Pressure-temperature grade: ASME B16.34, GB/T12224

Features:

1, 2 ~ 6 overlapping layers of stainless steel bellows or Inconel material, for single-layer bellows against breakage and make the valve leakage, bellows seal structure design is reasonable, fatigue resistance, long service life.

The bellows design is designed in the inside of the bonnet, avoiding the direct erosion of the medium and improving the life of the corrugated pipe.

3. Double seal design (bellows + packing). The bellows are mainly sealed and the packing is the auxiliary seal. If the bellows fail, the stem packing will also avoid leakage.

4. The metal bellows used for stem seal are welded to the stem on the lower end of the valve, removing the medium through the clearance of the valve rod movement and the upper end is placed between the valve body and the cover and the gasket is formed into a static seal.

5. The valve shall be sealed and sealed.

6. No external leakage, no fluid loss, improve equipment safety, and provide a clean and safe working environment.