DOUBLE DISC WAFER TYPE DUAL-PLATE CHECK VALVE
1. Small volume, light weight, compact structure, easy maintenance.
2. The valve plate adopts dual type, in the spring under the elastic moment of quick closing on its own. ~
3. Because of the quick closing effect, can prevent the backflow medium, eliminate water hammer effect is strong.
4. The body structure of small length, good rigidity, safe and reliable.
5. Completely sealed, water pressure test leak is zero.
6. Easy installation, can be used for horizontal two vertical direction installation.
7. Flange connection size comply with the provisions of GB/T 17241.6-98.
8. Structure length comply with GB /T1 2221 -89, ISO5752-89.
Products Elements
Body | Disc | Stem | Rubber gasket | Sping | ||||
Name | Code | Name | Code | Name | Name | Code | Working temp | Name |
Cast | Z | Plated ductile Iron | 1 | Stainless steel | EPDM | X3 | -46~+121Intemittence-50~+150 | Stainless steel |
Ductile Irol | Q | Aluminum bronze | 2 | Neoprene | X4 | -29~+99Intemittence-35~+113 | ||
Carbon steel | C | ZG1Cr13Ni9TiStainless steel | NBR | X5 | -35~+82Intemittence-23~+93 | |||
Stainless steel | P | CF8MStainless steel | 5 | Neoprene | X7 | -23~+150 | ||
CF8MStainless steel | 7 |
DN(mm) Nominal diameter |
50(2")~700(28") |
50(2")~450(18") |
|
PN(Nominal pressure) | 1.0 | 1.6 | |
MPaTesting pressure | Shell | 1.5 | 2.4 |
Sealing | 1.1 | 1.76 | |
Suitable temperature |
|||
Suitable mediums |
Frash water,sewage,air,steam,food,medicine,oils,acids,etc. |
DN | D | D1 | D2 | L | R | t | weight(kg) | |
mm | inch | |||||||
50 | 2" | 107 | 65 | 43.3 | 43 | 28.2 | 19 | 1.5 |
65 | 2.5" | 127 | 80 | 60.2 | 46 | 36.1 | 20 | 2.4 |
80 | 3" | 142 | 94 | 66.4 | 64 | 43.4 | 28 | 3.6 |
100 | 4" | 162 | 117 | 90.8 | 64 | 52.8 | 27 | 5.7 |
125 | 5" | 192 | 145 | 116.9 | 70 | 65.7 | 30 | 7.3 |
150 | 6" | 218 | 170 | 144.6 | 76 | 78.6 | 31 | 9.0 |
200 | 8" | 273 | 224 | 198.2 | 89 | 104.4 | 33 | 17 |
250 | 10" | 328 | 265 | 233.7 | 114 | 127 | 50 | 26 |
300 | 12" | 378 | 310 | 283.9 | 114 | 148.3 | 43 | 42 |
350 | 14" | 438 | 360 | 332.9 | 127 | 172.4 | 45 | 55 |
400 | 16" | 489 | 410 | 381.0 | 140 | 197.4 | 52 | 75 |
450 | 18 | 539/555 | 450 | 419.9 | 152 | 217.8 | 58 | 101/107 |
500 | 20" | 594 | 505 | 467.8 | 152 | 241 | 58 | 111 |
600 | 24" | 690 | 624 | 572.6 | 178 | 295.4 | 73 | 172 |
700 | 28" | 800 | 720 | 680 | 229 | 354 | 98 | 219 |