The HBGV is HatchedMay 1, 2015/in InventionVersion 1 of the HBGV was developed in January 2013. https://vsillc.com/wp-content/uploads/2015/05/Valve-V4-X-Section-Closed-Discharge.jpg 975 1600 yimprosvsillc https://vsillc.com/wp-content/uploads/2015/05/vsi-logo.png yimprosvsillc2015-05-01 03:11:152016-12-26 20:10:00The HBGV is Hatched