Control valves
Safety valves
Sizing and selection
Refer to:- http://www.spiraxsarco.com/prs/product-sizing.asp
Dimensions/weights (approximate) in mm and kg
Connection
Flow
Size
Inlet
Outlet
A
B
C*
EØ
DØ
Weight
Screwed
BSPF x BSPF
or
NPTF x NPTF
Sanitary
clamp
DN15
DN20
DN25
DN32
DN40
11⁄2"
DN50
2"
DN15
1"
DN20
1"
DN25
1"
40
40
55
44
60
48
70
58
81
67
96
80
40
55
55
60
60
64
194
-
229
-
242
-
279
-
365
-
420
-
209
50.5
245
50.5
258
50.5
12
1.3
20
2.4
24
2.9
29
4.2
37
8.8
46
13.0
12
1.4
20
2.6
24
3.1
1⁄2"
3⁄4"
3⁄4"
11⁄4"
1"
11⁄2"
11⁄4"
2"
21⁄2"
3"
3⁄4"
11⁄4"
11⁄2"
* Applies to sealed cap and lever designs.
Safety information, installation and maintenance
For full details see the Installation and Maintenance Instructions
(IM-P316-03) 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. Ensure the discharge
pipework system is sized correctly.
SV615 safety valve selection guide:
SV615
C
B
Model type
Configuration
Seal material
Finish
Size
Connections
(Inlet x Outlet)
SV615
A =
B =
S =
N =
E =
V =
P =
Q =
Closed bonnet / easing lever
Closed bonnet/sealed cap
Stainless steel
Nitrile
EPDM
Viton
Electroless nickel plated (ELNP)
ELNP and stainless steel
name-plate
A
N
Screwed version
DN15, DN20, DN25, DN32,
DN40 and DN50
BSPF x BSPF
NPTF x NPTF
Clamp x BSPF
D
A
Selection example
If ELNP finish is required, add 'P'.
How to order example:
1 off Spirax Sarco SV615AN safety valve having DN15 screwed
BSPF x BSPF connections, set at 6 bar g.
SV615 A N
BSPF x BSPF
DN15
BSPF
x
BSPF
DN15
Sanitary clamp version
C
B
E Ø
D Ø
A
TI-P316-01 CH Issue 16
SV615 Safety Valve
Page 5 of 5
4.7.10
