Check valve for gaseous oxygen service – 255900 SERIES


from DN15 to DN200 - from PN16 (class 150) to PN420 (class 2500) - from -30°C to +120°C

Check valve for gaseous oxygen service – 255900 SERIES | Presentation
Check valve for gaseous oxygen service – 255900 SERIES | Dimensions
Check valve for gaseous oxygen service – 255900 SERIES | Nomenclature
Check valve for gaseous oxygen service – 255900 SERIES | Codification

Description

Check valve made of copper alloy (#CuSn) with bolted bonnet and flanged ends for oxygen service. The trim is made of Nickel alloy (#Monel™ and Inconel™). The integral seat and a very neat lapping ensure a bubble-tight shut-off.

Applications

This range of valves has been specially designed for gaseous oxygen service.

General features

  • Body and bonnet made of copper alloy #CuSn
  • Trim made of nickel alloy (#Monel™ and Inconel™)
  • Metallic copper body gasket between body and bonneta

Alternatives

  • Lift plug closed by spring
  • Body and bonnet made of nickel alloy (Monel or Inconel depending on sizes and pressure rating) for corrosive atmospheres
  • Body and bonnet made of stainless steel for check valves installed behind a barrier
  • Butt welding ends for stainless steel bodies
  • Threaded ends (BS or NPT) and socket welding ends on request
  • ... (see codification)
Dimensions (mm) Weight (W) in kg
DN1 PN E W
15 20 (Class 150) 160 8
50 (Class 300) 160 9
100 (Class 600) 180 9
150 (Class 900) 200 9,4
250 (Class 1500) 200 9,4
420 (Class 2500) 216 11
20 20 (Class 150) 160 9,5
50 (Class 300) 210 10
100 (Class 600) 210 10
150 (Class 900) 230 10,5
250 (Class 1500) 230 10,5
420 (Class 2500) 228 30
25 20 (Class 150) 160 10
50 (Class 300) 210 10,5
100 (Class 600) 210 10,5
150 (Class 900) 230 15
250 (Class 1500) 230 15
420 (Class 2500) 254 30
40 20 (Class 150) 240 32
50 (Class 300) 240 35
100 (Class 600) 260 36
150 (Class 900) 323 95
250 (Class 1500) 323 111
420 (Class 2500) 350 120
50 20 (Class 150) 185 17,5
50 (Class 300) 185 17,5
100 (Class 600) 185 52
150 (Class 900) 366 104
250 (Class 1500) 366 127
420 (Class 2500) 436 137
80 20 (Class 150) 310 50
50 (Class 300) 337 91
100 (Class 600) 337 96
100 20 (Class 150) 350 80
50 (Class 300) 368 105
100 (Class 600) 394 120
150 20 (Class 150) 480 125
50 (Class 300) 508 146
200 20 (Class 150) 600 350
50 (Class 300) 628 372


Standard materials
Rep Designation Standard materials




(DNPN100) (DN>=DN50 & PN<=PN100)


NF EN 1982 Monel 400™ NF EN 1982 Inconel 625™
1 Body CuSn12-C CC483K UNS N04400 CuSn11Pb2-C CC482K A494 GR CW6MC



NiCu30FeMn
NiCr22Mo9Nb






2 Body gasket Helicoflex™ Cu








NF EN 1982 Monel 400™
3 Bonnet CuSn12-C CC483K UNS N0440




NiCu30FeMn

Bonnet flange (DN>=DN80) EN 10088-3
3.1 X2CrNi18-9 1.4307

A182 F304L








5 Spring Inconel








NiCu30FeMn
10 Plug Monel 400™


B164-B564




EN 10269


15 Stud X5CrNiMo17-12-2 1.4401


A320 GrB8M




EN 10269


16 Nut X5CrNi18-10 1.4301


A194 Gr8










for nickel alloy construction




2 5 5 9 0 0 - X X X - 00 00 00 - DN .. PN ..

2 5 5 9 0 0 - X X X - 00 00 00 - DN .. PN ..
Value Plug material
7 St. st. construction
9 Copper-aluminium construction


2 5 5 9 0 0 - X X X - 00 00 00 - DN .. PN ..
Value End connections
1 Threaded ends
3 Flanged
4 Butt welding ends
5 Socket welding ends


2 5 5 9 0 0 - X X X - 00 00 00 - DN .. PN ..
Value Pressure rating
1 PN16 & class 150
2 PN25
3 PN 40 & class 300
4 PN 64 & class 400
5 PN 100 & class 600
6 PN 160 & class 900
7 PN 250 & class 1500
8 PN 420 & class 2500


2 5 5 9 0 0 - X X X - 00 00 00 - DN .. PN ..
Value Option
H Metal body gasket
R With spring


2 5 5 9 0 0 - X X X - 00 00 00 - DN .. PN ..
Value Option
10 Reduced trim
17 Hard faced seat