Pneumatic Actuated Rubber Lined Diaphragm Valve
Pneumatic Actuated Rubber Lined Diaphragm Valve does not require an independent stem packing sealing structure. The diaphragm cuts off the medium and simultaneously realizes stem sealing. Besides, the highly flexible diaphragm provides reliable shut-off performance and can effectively cut off contaminated liquid.
Main Component Materials
No. | Name | Material |
1 | Body | GG25 / WCB / 304 |
2 | Bonnet | WCB |
3 | Diaphragm | EPDM |
4 | Disc | WCB |
5 | Cylinder | Aluminum Alloy |
6 | Piston | Aluminum Alloy |
7 | Valve Stem | Stainless Steel 304 / 45# Carbon Steel |
8 | Connection Type | Flange |
Lining & Diaphragm Material Selection
Material | Code | Applicable Temperature | Applicable Media |
FEP | F46 | ≤150℃ | Various concentrations of hydrochloric acid, sulfuric acid, hydrofluoric acid, aqua regia, nitric acid, various organic acids, strong alkalis, strong oxidants, alternating concentrated & dilute acids, alternating acid & alkali, various organic solvents. Not applicable for molten alkali metals, elemental fluorine and aromatic hydrocarbons. |
PCTFE | F3 | ≤120℃ | Same corrosion resistance as FEP |
PVDF | F2 | ≤120℃ | Same corrosion resistance as FEP |
TFE/E Copolymer | F40 | ≤120℃ | Same corrosion resistance as FEP |
PFA | PFA | ≤180℃ | Same corrosion resistance as FEP with wider temperature range |
Reinforced Polypropylene | RPP | ≤100℃ | Most organic acids, inorganic acids and inorganic solvents except concentrated nitric acid, fuming nitric acid and chlorosulfonic acid, strong oxidants |
Polyolefin | PO | ≤100℃ | Corrosive gas, liquid and solid-liquid slurry. Good resistance to hydrochloric acid, dilute sulfuric acid, hydrofluoric acid, alkali and salt solutions; anti-static and non-toxic |
Unlined Cast Iron | — | ≤100℃ | Non-corrosive media |
Unlined Stainless Steel | — | ≤150℃ | General corrosive media |
Butyl Rubber (Grade B) | IIR | ≤120℃ | Excluding >75% sulfuric acid, >20% hydrochloric acid, <60% hydrofluoric acid, >85% phosphoric acid, caustic alkalis and various esters |
Natural Rubber (Grade Q) | NR | ≤85℃ | Purified water, inorganic salts, diluted inorganic acids, etc. |
EPDM | EPDM | ≤120℃ | Acid and alkali resistance similar to natural rubber; excellent performance for low-pressure steam, hot water and cold water |
Neoprene Rubber | CR | ≤85℃ | Acid, alkali and oil resistance, resistant to non-polar solvents, better wear resistance than natural rubber |
Nitrile Rubber | NBR | ≤85℃ | Oil and wear resistance; acid resistance similar to natural rubber |
Hypalon (CSPE) | CSPE | ≤120℃ | Excellent ozone, atmospheric aging, acid, alkali and oxidant resistance, flame retardant and heat resistant; not resistant to petroleum and aromatic hydrocarbons |
FKM | FKM | ≤150℃ | Corrosion resistance close to fluoroplastics, stable in concentrated acids and strong oxidants, stable in organic solvents and alkaline solutions |
Silicone Rubber | SI | ≤200℃ | High temperature resistance, excellent electrical insulation and wear resistance; resistant to dilute acid, dilute alkali, salt and water corrosion, not resistant to gasoline, kerosene and other petroleum products |
Structural Drawing
Structural Drawing of Pneumatic Actuated Rubber Lined Diaphragm Valve
Mounting Overall Dimensions
DN | Nominal Pressure (MPa) | L | D | D1 | n-Φd | f | H | Air Supply Pressure (MPa) | Cylinder Outer Diameter ΦA | Valve Weight (KG) |
15 | 1.0 | 125 | 95 | 65 | 4-14 | 2 | 215 | 0.6 | 110 | 5 |
20 | 1.0 | 139 | 105 | 75 | 4-14 | 2 | 220 | 0.6 | 110 | 5.2 |
25 | 1.0 | 145 | 115 | 85 | 4-14 | 2 | 225 | 0.6 | 110 | 5.4 |
32 | 1.0 | 160 | 140 | 100 | 4-18 | 2 | 240 | 0.6 | 140 | 6.9 |
40 | 1.0 | 180 | 150 | 110 | 4-18 | 3 | 285 | 0.6 | 170 | 13.5 |
50 | 1.0 | 210 | 165 | 125 | 4-18 | 3 | 307 | 0.6 | 170 | 16 |
65 | 1.0 | 250 | 185 | 145 | 4-18 | 3 | 327 | 0.6 | 200 | 22 |
80 | 1.0 | 300 | 200 | 160 | 8-18 | 3 | 390 | 0.6 | 230 | 31 |
100 | 1.0 | 350 | 220 | 180 | 8-18 | 3 | 470 | 0.6 | 260 | 50 |
125 | 1.0 | 400 | 250 | 210 | 8-18 | 3 | 637 | 0.6 | 310 | 65 |
3D Exploded View
3D Exploded View of Pneumatic Actuated Rubber Lined Diaphragm Valve
Flow Characteristics
Flow Characteristics of Pneumatic Actuated Rubber Lined Diaphragm Valve
