IM-P316-03 CTLS Issue 14
6
The product must not be used in this region.
A - A Maximum operating temperature with metal seat.
A - B Maximum operating temperature with Viton seat.
A - C Maximum operating temperature with EPDM seat.
A - D Maximum operating temperature with Nitrile seat.
Body design conditions PN25
Set pressure range
Maximum
½" to 1¼" 18 bar g
1½" and 2" 14 bar g
Minimum 0.3 bar g
Temperature
Metal seat Minimum -90 °C
Maximum +230 °C
Nitrile seat * Minimum -30 °C
Maximum +120 °C
EPDM seat * Minimum -50 °C
Maximum +150 °C
Viton seat * Minimum -20 °C
Maximum +200 °C
Performance data
Overpressure
Steam 5%
Gas 10%
Liquid 10%
Blowdown limits
Steam, gas 10%
Liquids 20%
Derated coefficient of discharge values
Steam, gas 0.71
Liquid 0.52
Maximum permitted backpressure 10% of set pressure
Tested at a maximum inlet cold hydraulic test pressure of: 37.5 bar g
* Note: Soft seal inserts are not suitable for use on steam applications.
2.3 Pressure/temperature limits
Please contact Spirax Sarco,
when so required, for relevant
details regarding the maximum
allowable limits that the shell
can withstand.
Temperature °C
Pressure bar g
Steam
saturation
curve
Maximum set pressure
for 1½" and 2"
SV615
Maximum set pressure
for 1½" and 2"
SV615
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