electric lined diaphragm valve
nominal diameter: dn50 ~ 300mm
nominal pressure: pn1.0 ~ 1.6mpa
main material: cast iron, ductile iron, steel, stainless steel
drive: electric, pneumatic, manual
design and manufacture: bs5156
length of the structure: bs5156
method blue connection size: bs4504, din2532, jis b2212, ansi b16.1, iso2004
g941f46 electric lined diaphragm valve basic structure
1, the composite diaphragm separates the lower cavity of the valve body from the inner cavity of the bonnet and forms a direct current channel with it so as to completely separate the valve rod, the valve flap and other inner parts of the diaphragm from the medium, eliminating the need for the packing and sealing structure, leakage and leakage can be avoided at the same time.
2, as the implementation of the components of the film due to frequent opening and closing easily produce fatigue fracture, should be treated as conditions, the periodic change of media properties.
3, the corrosion resistance of plastic and recommended temperature see "valve and pipe fittings plastic lining performance table.
g941f46 electric lined diaphragm valve main components of the material table
| serial number | part name | grey cast iron | cast steel | stainless steel acid-proof | ultra-low carbon stainless steel acid-proof | ||
| z | c | p | r | pl | rl | ||
| 1 | body / bonnet | ht250 | wcb | cf8 | cf8m | cf3 | cf3m |
| 2 | disc / stem | 25 | 2cr13 | 1cr18ni9 | 1cr18ni12mo2ti | 00cr18ni10 | 00cr17ni14mo2 |
| 3 | lining / seat | pctef (f3), fep (f46), pfa (soluble f4), pp, po | |||||
| 4 | diaphragm | fep (f46) / cr (neoprene) pfa (soluble f4) / fpdm (ethylene propylene rubber) | |||||
| 5 | bracket | ptfe (f4) | cf8 | cf8 | |||
| 6 | stem nut | zcual10fe3 | zcual10fe3 | zcual10fe3 | |||
| 7 | tighten the bolts | 35 | 1cr17ni2 | 1cr18ni9ti | |||
| 8 | nut | 45 | 0cr18ni9 | 0cr18ni9 | |||
| 9 | handwheel | wcb | wcb | wcb | |||
g941f46 electric lined diaphragm valve main dimensions and connection dimensions
| pass through | l | d | d1 | d2 | f | b | z-φd | d | d1 | d2 | f | b | z-φd | |
| dn (mm) | nps (inch) | pn1.0mpa | pn1.6mpa | |||||||||||
| 15 | 1/2 | 125 | 80 | 55 | 40 | 2 | 12 | 4-φ12 | 95 | 65 | 45 | 2 | 14 | 4-φ14 |
| 20 | 3/4 | 135 | 90 | 65 | 50 | 2 | 14 | 4-φ12 | 105 | 75 | 55 | 2 | 16 | 4-φ14 |
| 25 | 1 | 145 | 100 | 75 | 60 | 2 | 14 | 4-φ12 | 115 | 85 | 65 | 2 | 16 | 4-φ14 |
| 32 | 5/4 | 160 | 120 | 90 | 70 | 2 | 16 | 4-φ14 | 135 | 100 | 78 | 2 | 18 | 4-φ18 |
| 40 | 3/2 | 180 | 130 | 100 | 80 | 3 | 16 | 4-φ14 | 145 | 110 | 85 | 3 | 18 | 4-φ18 |
| 50 | 2 | 210 | 140 | 110 | 90 | 3 | 16 | 4-φ14 | 160 | 125 | 100 | 3 | 20 | 4-φ18 |
| 65 | 5/2 | 250 | 160 | 130 | 110 | 3 | 16 | 4-φ14 | 180 | 145 | 120 | 3 | 20 | 4-φ18 |
| 80 | 3 | 300 | 185 | 150 | 125 | 3 | 18 | 4-φ18 | 195 | 160 | 135 | 3 | 22 | 4-φ18 |
| 100 | 4 | 350 | 205 | 170 | 145 | 3 | 18 | 4-φ18 | 215 | 180 | 155 | 3 | 22 | 8-φ18 |
| 125 | 5 | 400 | 235 | 200 | 175 | 3 | 20 | 8-φ18 | 245 | 210 | 185 | 3 | 24 | 8-φ18 |
| 150 | 6 | 460 | 260 | 225 | 200 | 3 | 20 | 8-φ18 | 280 | 240 | 210 | 3 | 24 | 8-φ23 |
| 200 | 8 | 570 | 315 | 280 | 255 | 3 | 22 | 8-φ18 | 335 | 295 | 265 | 3 | 26 | 8-φ23 |
| 250 | 10 | 680 | 370 | 335 | 310 | 3 | 24 | 12-φ28 | 390 | 350 | 320 | 3 | 28 | 12-φ23 |
| 300 | 12 | 790 | 435 | 395 | 362 | 4 | 24 | 12-φ23 | 440 | 400 | 368 | 4 | 28 | 12-φ23 |