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 A Face to Face dimensions to BS4312

Nominal Size		80	100	125	150	200
C	PN 10, 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