Control systems Safety valves
4
Safety information, installation and maintenance For full details see the Installation and Maintenance Instructions (IM-P137-01) supplied with the product. Installation note: The safety valve should always be fitted with the centre line of the spring housing vertically above the valve. Open bonnet valves are recommended for all steam boiler applications and must be used for valves fitted with Tungsten alloy springs.
SV60 safety valve selection guide: Model type SV60
SV60
4 = Carbon steel
Body material
4
7 = SG iron
A = Closed bonnet/easing lever
B = Closed bonnet/sealed cap
Configuration
A
C = Closed bonnet/packed lever (DN20 to DN100 only)
D = Open bonnet/easing lever
S = Stainless steel with chrome-vanadium alloy steel spring
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Seal material
S
T = Stainless steel with tungsten alloy steel spring (only available in combination with the ‘D’ (open bonnet) configuration)
Size
DN20
DN20 to DN150
Inlet connection
PN40
PN16 (DN65 to DN150 only), PN25, PN40 or ASME (ANSI) 300
Selection example
SV60
4
A
S
DN20
PN40
How to order example 1 off Spirax Sarco SV604AS, DN20 flanged PN40 safety valve with a set pressure of 6 bar g.
TI-S13-27 CMGT Issue 17
Page 13 of 13
SV60 Safety Valve
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