A weir-type diaphragm valve is a specific design of diaphragm valve that features a raised lip or saddle in the valve body. The diaphragm comes into contact with this weir to form a seal and control fluid flow.
Main parts and materials
| Name/Material | CI | WCB | CF8 | CF3 | CF8M | CF3M |
| Body | CI | WCB | CF8 | CF3 | CF8M | CF3M |
| Diaphragm | EPDM/NR/IIR | EPDM/NR/IIR | EPDM/NR/IIR | EPDM/NR/IIR | EPDM/NR/IIR | EPDM/NR/IIR |
| Lined | EPDM/NR/IIR | |||||
| Seat | EPDM/NR/IIR | |||||
| Bolt/Nut | B7/2H | B7/2H | B8/8 | B8/8 | B8M/8M | B8M/8M |
Technical Specification
| Design&Manufacture Standard | GB12239 | GB12239 | ||
| FTF Dimension Standard | BS5156 | BS5156 | ||
| Flange standard | BS4504 | ASME B16.5 | ||
| Inspection & Test Standard | HG/T13927, JB/T9092 | API 598 | ||
| Normal Diameter | DN25~DN300 | 1”~12” | ||
| Normal Pressure | 1.0MPa | 1.6MPa | 150LB | |
| Test pressure | Shell Test | 1.5MPa | 1.5MPa | 1.5MPa |
| High Pressure Test | 1.1MPa | 1.1MPa | 1.1MPa | |
| Low Pressure Test | 0.6MPa | 0.6MPa | 0.6MPa | |
| Temperature Range | EPDM:-29℃~110℃, NR:-29℃~80℃, IIR:-29℃~110℃ | |||
| Applicable Medium | General corrosive medium and abrasive material | |||
The main connection size
| DN (mm | PNS (Inch) | Normal pressure (Mpa) | Working pressure (Mpa) | L | D | D1 | Z-Φd | f | H | Do |
| 20 | 3/4 | 1.0 | 1.0 | 117 | 105 | 75 | 4-14 | 2 | ||
| 25 | 1 | 127 | 115 | 85 | 4-14 | 2 | 146 | 120 | ||
| 32 | 1-1/4 | 148 | 140 | 100 | 4-18 | 2 | 152 | 120 | ||
| 40 | 1-1/2 | 159 | 150 | 110 | 4-18 | 2 | 152 | 120 | ||
| 50 | 2 | 190 | 165 | 125 | 4-18 | 2 | 163 | 120 | ||
| 65 | 2-1/2 | 216 | 185 | 145 | 4-18 | 2 | 205 | 230 | ||
| 80 | 3 | 254 | 200 | 160 | 818 | 2 | 220 | 230 | ||
| 100 | 4 | 305 | 220 | 180 | 8-18 | 2 | 262 | 280 | ||
| 125 | 5 | 0.6 | 356 | 250 | 210 | 8-18 | 3 | 290 | 280 | |
| 150 | 6 | 406 | 285 | 240 | 8-22 | 3 | 368 | 363 | ||
| 200 | 8 | 521 | 340 | 295 | 8-22 | 3 | 410 | 363 | ||
| 250 | 10 | 0.4 | 635 | 395 | 350 | 12-22 | 3 | 559 | 483 | |
| 300 | 12 | 749 | 445 | 400 | 12-22 | 3 | 625 | 576 |
Our heavy duty pneumatic pinch valve is designed for tough industrial applications, offering excellent control of abrasive and corrosive media, ensures reliable sealing, minimal maintenance, and long service life. Ideal for slurry, chemical, and wastewater systems, Main of components Body, sleeve, Stem, pinch rod, side guide rod, Hand wheel etc. Working principle when rotate the […]
Y type Strainer is an indispensable filter device in the pipeline system of conveying media made by stainless steel. It is usually installed at the inlet end of pressure reducing valve, pressure relief valve, fixed level valve or other equipment to remove impurities in the media to protect the normal use of valves and equipment. The characteristics include advanced structure, low resistance, convenient blowdown and so on. Applicable media can be water, oil, gas. Generally, the water network is 18 to 30 mesh, the ventilation network is 10 to 100 mesh, and the oil network is 100 to 480 mesh. Main parts and materials Name/Material WCB CF8 CF3 CF8M CF3M Body WCB CF8 CF3 CF8M CF3M Screen SS304 SS304 SS304L SS316L SS316L Bolt/Nut B7/2H B8/8 B8/8 B8M/8M B8M/8M Gasket PTFE、NBR、Metal Wound Graphite Filter Fineness 10Mesh ~ 400Mesh Flange Standard JIS、ASME、DIN、BS、GB Pressure 0.6Mpa ~ […]
The stainless steel flanged ball valve operates using a spherical closure element (the ball) that rotates around its axis, enabling quick opening and closing actions. This valve features flanged connections, allowing it to be easily mounted to piping systems. Key Features Operation Mechanism Fluid Regulation and Control Hard Seal V-Type Ball Valve Multi-Pass Functionality Installation […]
Double switch strainer (SSL) Double strainer is also known as Double switch strainer, using two three-way ball valves or butterfly valve, the two single-cylinder filter assembly on a frame, cleaning the filter does not have to stop, to ensure its continuous work, is the first choice for the filter production line, the filter element of the filter, […]
