Leakage at various points in pipelines found in chemical plants creates emissions. All such leakage points can be detected using various methods and instruments and should be noted by the plant engineer. Critical leakage points include flanged gasket joints and the Valve / pump gland packing, etc. Today the chemical process industry is gearing itself towards safer technology for better environmental protection and it has become every process engineer's responsibility to design plants that limit damage to the environment through the prevention of leakage of any toxic chemicals.
Longer bellows globe valve-ADVANTAGES
Stem :2-part rising stem with outside roll-formed thread; stem coupling with bellows anti-torque device .
Bellow : Multiple wall, fully flushed stainless steel bellows, secured against torsion, designed for 10,000 cycles; fully welded
360º free rotation disc that allows the cleaning of impurities that can carry the fluid to make the closure on the different surfaces of the seat, at the same time, it does not transmit the vibrations to the valve stem.
Application:Hot oil system, steam system, hot and cold water system etc.;Advantage:1.Bellow seal element. The key part of bellow sealed globe valves is metal bellow. It is the connection between cover and stem with automatic roll welding. The metal bellow can keep the stem part no leakage.read more
Application:Petroleum, chemical industry, pharmacy, fertilizer, power industry etc.;Advantage:1. Double seal design(bellows+packing). Bellow and packing can protect against leakage and provide a excellent seal.2. Ergonomic hand wheel. It provide longer service life and easier operation.3. Heat-treatm…read more
ADVANTAGES 1、Bold stem. The bold stem increases the wear resistance of the stem, good for steam system and the thermal oil system. 2、Longer bellow. Multiple layer of fully welded stainless steel bellows, secure high torsion performance and 10,000 cycles service life; 3、360 free rotation disc. It …read more
Advantage 1、Two-part Stem. It’s combine with up-stem and down-stem, with wear resistance material and corrosion resistance material, meet the requirement of wear and corrosion resistance. 2、Longer bellow. Multiple layer of fully welded stainless steel bellows, secure high torsion performance and 1…read more
Application:Hot oil system, steam system, hot and cold water system etc.Advantage:1.Bellow seal element. The key part of bellow sealed globe valves is mental bellow. It is the connection between cover and stem with automatic roll welding. The mental bellow can keep the stem part no leakage.read more
WHY BELLOWS SEAL VALVES One of the most frequent and serious problems valves face is gland leakage, results in wasted and increased plant downtime. Apart from the high cost of energy losses, Gland leakages can also cause serious environmental, ecological and health hazards to plant workers and perso…read more