Instemi
Pressure Safety Valve Sizing
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Pressure Safety Valve Data
Type
Conventional
Balanced Bellows
Pilot Operated
Body Material
Number of Valves
(N)
Ruputure disc installed in valve inlet
Process Data
Design Conditions / Setting
Design Pressure
(P
Design
)
bar a
bar g
kPa a
kPa g
psi a
psi g
Design Temperature
(T
Design
)
ᵒC
ᵒF
K
Set Pressure
(P
s
)
bar a
bar g
kPa a
kPa g
psi a
psi g
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Fluid Phase
Liquid
Gas
None
Case
Total Back Pressure
(P
2
)
bar a
bar g
kPa a
kPa g
psi a
psi g
Overpressure %
10
16
21
Liquid Phase
Mass Flowrate
Volumetric Flowrate
(Q)
m³/h
m³/s
ft³/h
ft³/s
Density
(ρ)
kg/m³
lb/ft³
lb/in³
Dynamic Viscosity
Kinematic Viscosity
(ν)
cSt
m²/s
Gas Phase
Mass Flowrate
Volumetric Flowrate
Normal Volumetric Flowrate
Standard Volumetric Flowrate
(W)
kg/h
kg/s
lb/h
lb/s
Relieving Temperature
(T)
ᵒC
ᵒF
K
Molecular Weight
(M)
kg/kmol
Compressibility Factor
(Z)
Specific Heat Ratio
(k)
Calculation
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