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DRVZ Technical parameters of silent check valve
Product model | DRVZ |
Nominal diameter | 2”-12”(DN50-DN300) |
Nominal pressure | PN10/16/25 |
Applicable medium | clean water |
Applicable temperature | -10℃~80℃ |
Material of main parts
Part name | texture of material | Part name | texture of material |
valve body | GJS 500-7 | shim | EPDM |
Disc | GJS 500-7+EPDM | Disc nut | ANSI 304 |
Spring | ANSI 304 | Guide sleeve | C61900 |
O-ring | NBR | Guide body | GJS 500-7 |
Stem | ANSI 304 |
Main connection dimensions
Nominal diameter | L | D | D1 | N-Φd | |||||||
DN(mm) | NPS(in) | PN10 | PN16 | PN25 | PN10 | PN16 | PN25 | PN10 | PN16 | PN25 | |
50 | 2″ | 150 | 165 | 165 | 165 | 125 | 125 | 125 | 4-Φ19 | 4-Φ19 | 4-Φ19 |
65 | 2.5″ | 170 | 185 | 185 | 185 | 145 | 145 | 145 | 4-Φ19 | 4-Φ19 | 8-Φ19 |
80 | 3″ | 180 | 200 | 200 | 200 | 160 | 160 | 160 | 8-Φ19 | 8-Φ19 | 8-Φ19 |
100 | 4″ | 190 | 220 | 220 | 235 | 180 | 180 | 190 | 8-Φ19 | 8-Φ19 | 8-Φ23 |
125 | 5″ | 200 | 250 | 250 | 270 | 210 | 210 | 220 | 8-Φ19 | 8-Φ19 | 8-Φ28 |
150 | 6″ | 210 | 285 | 285 | 300 | 240 | 240 | 250 | 8-Φ23 | 8-Φ23 | 8-Φ28 |
200 | 8″ | 230 | 340 | 340 | 360 | 295 | 295 | 310 | 8-Φ23 | 12-Φ23 | 12-Φ28 |
250 | 10″ | 250 | 395 | 405 | 425 | 350 | 355 | 370 | 12-Φ33 | 12-Φ28 | 12-Φ31 |
300 | 12″ | 270 | 445 | 460 | 485 | 400 | 410 | 430 | 12-Φ23 | 12-Φ28 | 16-Φ31 |