MATERIALS OF MAIN PARTS
This series product has two discs, the axes is set diametrically on the pipeline, opening under the pressure of medium, closing by the medium returning and the spring installed on the axes. After closing, the spring push down the discs, sealing is perfect. The length is short,
only 1/5-1/6 of H44 Type Check, Light in weight, it is easy to install and dismountle.
