- SJ800 Differential by-pass balance valve
- 2016-10-28 22:28
- SJ800 Differential by-pass balance valveStructure and purpose of SJ800 Differential by-pass balance valveA valve used be
- burrtefly valve
- 2016-10-23 06:05
- Product DescriptionMaterials List: Body materials: Cast Iron, Ductile Iron, Stainless SteelDisc: Ductile Iron (with Nick