F51N WAFER TYPE SILENT CHECK VALVE

Fig No.: F51N16 (PN16) / F51N25 (PN25)

FEATURES & SPECIFICATIONS

  • Spring loaded.
  • Rubber seat ring for non-slam effect.
  • Durable fusion bonded epoxy coated.
  • Comply with BS 5153 / EN 12334 / MS SSP71.
  • 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.

PRESSURE & TEMPERATURE RATINGS

Working Pressure 16bar / 25bar
Shell Testing Pressure (x1.5) 24bar / 37.5bar
Seat Testing Pressure (x1.1) 17.6bar / 27.5bar
Working Temperature -20°C … 110°C EPDM
-10°C … 80°C NBR
Suitable Media Water, Oil, Gas

Material Specification

Part Material Specification
Body Cast Iron
Ductile Iron
EN-JL 1040
EN-JS 1050
Disc Ductile Iron
Stainless Steel 304
Aluminium Bronze
EN-JS 1050
EN 10088-3 1.4301
EN 1982 CC491K
Seat Ductile Iron
Stainless Steel 304
Aluminium Bronze
EN-JS 1050
EN 10088-3 1.4301
EN 1982 CC491K
Seat Ring EPDM / NBR
Stem Stainless Steel 410 EN 10088-3 1.4006
Spring Stainless Steel 304 EN 10088-3 1.4301
Bushing Gunmetal EN 1982-2008 GC CC491K

DIMENSIONS

DN (mm)
(inch)
50
2
65
80
3
100
4
125
5
150
6
200
8
250
10
300
12
350
14
D 110 136 152 178 221 248 340 404 415 484
H 67 73 80 102 118 140 165 210 286 350

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