December 27^th, 2018, Rising stem ball valve of the key localization production for oil and gas pipeline, successfully passed industrial test. After six-years strict testing and detecting, both of these two valves reached R&D requirement, achieved 0 leakage in tream&downstream and body cavity, the whole performance exceeded the similar product in Europe and America.

July 2018, NPS14-900, NPS16-900 These two rising stem ball valves(metal to metal sealing) passed Thirty times forward seal test, Four times reverse seal test in Urumqi simulated working condition experiment site, achieved no leakage in forward&reverse seal and body cavity. After witnessed by the third party, evaluated by experts, NDIV rising stem ball valve successfully passed industrial test on 31th,July,2018. It is the fourth production of oil and gas pipeline equipment localization project by Zigong New Dipper Valve Co. The other three localization products were Axial Flow Check Valve, Nitrogen Surge Relieve Valve, Swing Piggable Check Valve.