Posted on September 9, 2015December 24, 2018 by SGVSight Glass Valve Casting Sight glass Stainless-steel-straight-type-sight-valve-body-casting：Double window Straight sight Glass offers a quick, economical and reliable way to check the medium through industrial process lines. Our products are featured with strength, reliability and durability, accuracy,. It has widely used in Petroleum, chemical, pharmaceutical, food industrial.Our glasses are designed with perfection and precision to withstand extreme temperature. 128pcs PN10 DN100 Double window straight type sight valve was produced in Foundry. ssCF8 material body with Dyepenetration test for 20% valve.