Cast Steel Globe Boiler Crown Stop & Non Return

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 and 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 Ring – Stainless Steel Casting to BS EN 10283 1.4408
• Stem – Stainless Steel to BS EN 10088-3 1.4006
• Dashpot/Cylinder – Gunmetal to BS EN 1982 CC491K
• Gland Packing – Exfoliated Graphite

*DIM A Face to Face dimensions to BS 4312

Nominal Size		80	100	125	150	200
A	PN 10, 16, 25, 40	305	356	406	457	533
	BST E, F, H, ANSI 150	305	356	406	457	533
B		365	430	495	610	673
C		200	250	315	400	530
Weight Kg.		40	60	96	145	225