Materials
| Body | Stainless Steel 304 Stainless Steel 316 |
| Disc | Stainless Steel 304 Stainless Steel 316 |
| Stem | Stainless Steel 304 Stainless Steel 316 |
| Spring | Stainless Steel 304 Stainless Steel 316 |
| Shim | PTFE |
| Gasket | PTFE |
| Spool | Stainless Steel 304 |
PN16/PN25 Fig No.: F51DD16-50 (SS304) / F51DD16-51 (SS316) / F51DD25-50 (SS304) / F51DD25-51 (SS316)
FEATURES & SPECIFICATIONS
Spring loaded double door.
Rubber seat for non-slam effect.
Oil-free processing treatment option available.
Wafer connection to BS 4504 PN16 / EN 1092-2 PN16 / BS 4504 PN25 / EN 1092-2 PN25 / ANSI Class 150 (Specify on order).
Applicable for Building Services, Air-Conditioning, Fire-Protection, Cold Water Plumbing, Hot Water System, General Industries.
Working pressure : 16bar/25bar
Shell test pressure (x1.5) : 24bar/37.5bar
Seat test pressure (x1.1) : 17.6bar/27.5bar
Working temperature : -20°C … 120°C.
Suitable Media : Water, Oil & Gas.
| Body | Stainless Steel 304 Stainless Steel 316 |
| Disc | Stainless Steel 304 Stainless Steel 316 |
| Stem | Stainless Steel 304 Stainless Steel 316 |
| Spring | Stainless Steel 304 Stainless Steel 316 |
| Shim | PTFE |
| Gasket | PTFE |
| Spool | Stainless Steel 304 |
DIMENSIONS FOR PN16
| DN | (mm) (inch) |
50 2 |
65 2½ |
80 3 |
100 4 |
125 5 |
150 6 |
200 8 |
250 10 |
300 12 |
350 14 |
400 16 |
450 18 |
500 20 |
600 24 |
| L | 43 | 46 | 64 | 64 | 70 | 76 | 89 | 114 | 114 | 127 | 140 | 152 | 152 | 178 | |
| D | 107 | 127 | 142 | 160 | 192 | 218 | 273 | 328 | 384 | 444 | 495 | 555 | 615 | 734 |
DIMENSIONS FOR PN25
| DN | (mm) (inch) |
50 2 |
65 2½ |
80 3 |
100 4 |
125 5 |
150 6 |
200 8 |
250 10 |
300 12 |
350 14 |
400 16 |
450 18 |
500 20 |
600 24 |
| L | 60 | 67 | 73 | 73 | 86 | 98 | 127 | 146 | 181 | 184 | 191 | 203 | 219 | 222 | |
| D | 108 | 128 | 142 | 168 | 194 | 224 | 284 | 341 | 401 | 458 | 515 | 565 | 622 | 732 |

As a direct manufacturer, we have dedicated measurement, installation, and production teams to ensure a perfect fit every time.
Our representatives will contact you shortly to confirm your appointment date and time. Thank you for your interest!