Isolation valves for Furnace/Boiler Safety valves - Section 1 1

[Nasim12345]

Dears
Anyone can share me, in which paragraph states that, do not install Isolation valve on Section 1 Safety valves inlet, which is installed on Boiler / Furnace.

Thanks
Nasim

 

[The Obturator]

Answered in your own thread earlier this year thread1203-479775
ASME I 2021 Edition probably has same (I don't have it to hand)

*** Per ISO-4126, the generic term 'Safety Valve' is used regardless of application or design ***

*** 'Pressure-relief Valve' is the equivalent ASME/API term ***

 

[Nasim12345]

Thanks