
Details Explanation
ZSHWJ/ZDRWJ/ZSHWF/ZDRWF series lining rubber, lining fluorine butterflyvalveIt is a slurry pipeline dedicated valve designed and developed for supporting large-scale coal-fired power plant desulfurization and denitrification devices, and is suitable for the transportation of liquids and gases (including steam) in various industrial pipelines, especially in applications with corrosive media such as sulfuric acid, phosphoric acid, hydrofluoric acid, chlorine gas, strong alkali, aqua regia and other highly corrosive media. This product has the characteristics of good cutting performance, strong corrosion resistance, and long service life.
FEATURES
The valve body of the rubber lined butterfly valve is lined with EPDM (ethylene propylene diene monomer), which has strong corrosion resistance and erosion resistance, and a long service life; The valve plate material is selected from duplex stainless steel 2205, 1.4529, etc., which has extremely strong resistance to chloride ion corrosion (can withstand 40000 ppm of chloride ions), extremely strong comprehensive mechanical properties, and extremely high surface hardness. Especially suitable for corrosive slurry media such as mortar, which contain particles and are prone to erosion. Austenitic stainless steel can also be used according to the working conditions; The valve plate with a mirror finish is combined with a sealing pair of EPDM (ethylene propylene diene monomer) with good chloride ion resistance, strong toughness, and elasticity to achieve complete sealing and zero leakage in the air tightness test; Low flow resistance and high rated flow coefficient; This butterfly valve product adopts a clamp connection.
The fluorine lined butterfly valve adopts a PTFE lined butterfly plate with a spherical sealing surface, and is equipped with a silicone rubber gasket at the base of the valve seat to adjust the sealing performance of the valve; This valve is easy to operate, has tight sealing performance, and has a long service life; Can be used to quickly cut off or adjust flow. The valve body adopts a split type design, and the sealing at both ends of the valve shaft is controlled by adding fluororubber to the rotating base surface between the butterfly plate and the valve seat; Thus achieving the goals of compact product structure, beautiful appearance, reasonable craftsmanship, and reliable performance. The closed connection ensures that the valve shaft does not come into contact with the medium in the flow channel. The split valve body connection not only facilitates the replacement of the valve shaft on the pipeline, but also allows for easy and quick adjustment of the sealing ratio performance. Low flow resistance and high rated flow coefficient; This butterfly valve product adopts a clamp connection.
Structural diagram of rubber lined butterfly valve body

Part name | Common materials for rubber lined butterfly valves |
Packing material | PTFE |
Lining | QAL9-4、PTFE |
Valve plate | Nylon 11 CF8、2205 |
Valve stem | 304, 2Cr13 |
Sealing valve seat | EPDM rubber, nitrile rubber, fluororubber |
Valve body | HT200、QT450-22AL、WCB、CF8 |
Main performance indicators
Nominal diameter: DN50~1000mm(2”~40”)
Nominal pressure: PN1.0~1.6MPa(150lb)
Applicable temperature:- 50~+130℃
Applicable media: lime, stone slurry, seawater, oil, alkali, salt, weak acid, etc.
Connection size and standard
Connection method: clamp type
Flange standard: GB/T9119.8、HG20592
Sealing surface form: PN10 and PN16 are protruding surfaces (RF);
Design and Manufacturing Standards: GB/T4213、GB/T12238;
Acceptance criteria: GB/T4213、GB/T13927;
*If there are special circumstances, the connection size can be manufactured according to the user's requirements.
Structural diagram of fluorine lined butterfly valve body

Part name | Common materials for rubber lined butterfly valves |
Packing material | PTFE |
Lining | QAL9-4、PTFE |
Valve plate | CF8, CF8M, WCB lined with PTFE F4、PFA |
Valve stem | 304, 2Cr13 |
Sealing valve seat | PTFE、F4、PFA |
Valve body | CF8, CF8M, WCB lined with PTFE F4、PFA |
Main performance indicators
Nominal diameter: DN50~1000mm(2”~40”)
Nominal pressure: PN1.0~1.6MPa(150lb)
Applicable temperature:- 80~+200℃
Applicable media: sulfuric acid, phosphoric acid, hydrofluoric acid, chlorine gas, strong alkali, aqua regia, etc.
Connection size and standard
Connection method: clamp type
Flange standard: GB/T9119.8、HG20592
Sealing surface form: PN10 and PN16 are protruding surfaces (RF);
Design and Manufacturing Standards: GB/T4213、GB/T12238;
Acceptance criteria: GB/T4213、GB/T13927;
*If there are special circumstances, the connection size can be manufactured according to the user's requirements.