Cast Steel Angle Boiler Crown

PRESSURE / TEMPERATURE  RATING:  

In accordance with BSI, BS EN 13709 (formerly BS5160*) and ANSI Specifications.  For the Line Flange Connection required, refer to the Pressure Temperature Rating Chart in the Technical Data Section of our website.

FLANGED:

BS EN 1092-1 – PN10, PN25, PN16 PN40

BS 10 Tables – E,F,H,

ANSI B 16.5 – Class 150

 

 

 

 

CONSTRUCTION:

  • Bolted Cover, outside screw SDNR Valve with rising spindle. 
  • These Valves should be installed with the Valve Head Vertical.
  • Supplied with internal dashpot to minimise noise & wear caused by chatter
  • Flanges will be drilled unless otherwise specified on order

MATERIALS:

  • Body –  Carbon Steel to BS EN 10213 gr. GP240GH (WCB) 0.23%C max
  • Cover – Carbon Steel BS EN 10028 161 – 430
  • Disc – Stainless Steel Casting to ASME SA 487 CA6NM Class A
  • Seat – Stainless Steel Casting to BS EN 10283 1.4408 (formerly BS 3100 316 C16)
  • Stem – Stainless Steel to BS EN 10088-3 1.4006 (formerly BS 970 410 S21)
  • Dashpot/Cylinder – Gunmetal to BS EN 1982 CC491K
  • Gland Packing – Exfoliated Graphite

*DIM C Center to Face dimensions to BS 4312

Nominal Size 80 100 125 150 200
 C PN10, 16, 25, 40 152 178 203 229 260
BST E, F, H, ANSI 150 152 178 203 229 260
 D 333 372 457 577 665
E 200 250 315 400 530
Weight Kg. 36 54 85 120 207

OPTIONAL EXTRAS:

  • Open and Shut Indicator Locking Device

TYPE OF APPLICATION:

  • Isolation
  • Fluid Non-Return

 LINE MEDIA:

  • Wet/Saturated Steam
  • Condensate
  • High Temperature Hot Water
  • Medium Temperature Hot Water
  • Low Temperature Hot Water
  • Cold “Clean” Water