Control valves

Safety valves

Sizing and selection

Refer to:- http://www.spiraxsarco.com/prs/product-sizing.asp

Dimensions/weights (approximate) in mm and kg

Size

Inlet / Outlet

DN20 - DN32

DN25 - DN40

DN32 - DN50

DN40 - DN65

DN50 - DN80

DN65 - DN100

DN80 - DN125

DN100 - DN150

DN125 - DN200

DN150 - DN250

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 for valves fitted with Tungsten alloy springs.

SV60 safety valve selection guide:

Weight

Dimensions

A

B

C

D

85

100

110

115

120

140

160

180

200

225

95

105

115

140

150

170

195

220

250

285

385

435

450

520

535

710

790

835

1 042

1 165

Flow Ø

17.0

23.8

30.6

38.0

50.1

59.0

73.0

91.0

105.0

125.0

10.5

12.5

16.0

18.0

20.0

40.0

56.0

77.0

120.0

190.0

SV604

SV607

10.5

11.5

15.0

18.0

22.0

38.0

53.0

75.0

115.0

180.0

Model type

Body material

Configuration

Seal material

Size

Inlet

connection

SV60

SV60

4=

7 =

A =

B =

C=

D =

S =

T =

Carbon steel

SG iron

Closed bonnet / easing lever

Closed bonnet / sealed cap

Closed bonnet / packed lever

(DN20 to DN100 only)

Open bonnet / easing lever

Stainless steel with

chrome-vanadium alloy

steel spring

Stainless steel with

tungsten alloy steel spring

C

4

A

B

S

DN20 to DN150

PN16 (DN65 to DN150 only), PN25,

PN40 or ASME (ANSI) 300

D

DN20

PN40

A

Selection example

How to order example

1 off Spirax Sarco SV604AS, DN20 flanged PN40 safety valve with

a set pressure of 6 bar g.

SV60 4 A

S

DN20

PN40

TI-S13-27 CH Issue 13

SV60 Safety Valve

Page 7 of 7

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