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Flat end with a full-face gasket for single isolated opening

Bolted circular flat end with a full-face gasket e e 1 C value ≥ 0.7C
Bolted circular flat end with a full-face gasket

Values for calculation

\{T\in\mathbb{R}\mid T\geq0\}
This set includes all real numbers that are greater than or equal to zero. Therefore, it contains all positive numbers and zero, but no negative numbers.
T \mathrm{°C}
\{T_{test}\in\mathbb{R}\mid T_{test}\geq0\}
This set includes all real numbers that are greater than or equal to zero. Therefore, it contains all positive numbers and zero, but no negative numbers.
T_{test} \mathrm{°C}
\{P\in\mathbb{R}\mid P>0\}
This set includes all real numbers that are greater than zero. Therefore, it contains only positive numbers. Zero and negative numbers are not included in this set.
P \mathrm{MPa}
\{P_{test}\in\mathbb{R}\mid P_{test}>0\}
This set includes all real numbers that are greater than zero. Therefore, it contains only positive numbers. Zero and negative numbers are not included in this set.
P_{test} \mathrm{MPa}
\{C\in\mathbb{R}\mid C>0\}
This set includes all real numbers that are greater than zero. Therefore, it contains only positive numbers. Zero and negative numbers are not included in this set.
C \mathrm{mm}
\{d\in\mathbb{R}\mid d>0\}
This set includes all real numbers that are greater than zero. Therefore, it contains only positive numbers. Zero and negative numbers are not included in this set.
d \mathrm{mm}
R_{p0.2/T} \mathrm{MPa}
R_{p0.2/T_{test}} \mathrm{MPa}
R_{p1.0/T} \mathrm{MPa}
R_{p1.0/T_{test}} \mathrm{MPa}
R_{m/20} \mathrm{MPa}
R_{m/T} \mathrm{MPa}
R_{m/T_{test}} \mathrm{MPa}

Calculation

Maximum allowed value of the nominal design stress for normal operating load cases

\text{if }\ \text{type }\text{of }\text{material}= \text{Cast steels}
\text{if }\ \text{type }\text{of }\text{material}= \text{Cast steels}
Equations in LaTeX code
\text{if }\ \text{type }$$\text{of }$$\text{material}= \text{Cast steels}
f_d=\min\left(\cfrac{R_{p0.2/T}}{1.9}, \cfrac{R_{m/20}}{3}\right)
f_d=\min\left(\cfrac{R_{p0.2/T}}{1.9}, \cfrac{R_{m/20}}{3}\right)
Equations in LaTeX code
f_d=\min\left(\cfrac{R_{p0.2/T}}{1.9}, \cfrac{R_{m/20}}{3}\right)
\text{else if }\ \text{type }\text{of }\text{material}= \text{Austenitic steels}\wedge\text{min. }\text{elongation }\text{after }\text{fracture}\geq 35
\text{else if }\ \text{type }\text{of }\text{material}= \text{Austenitic steels}\wedge\text{min. }\text{elongation }\text{after }\text{fracture}\geq 35
Equations in LaTeX code
\text{else if }\ \text{type }$$\text{of }$$\text{material}= \text{Austenitic steels}\wedge\text{min. }$$\text{elongation }$$\text{after }$$\text{fracture}\geq 35
f_d=\max\left[\cfrac{R_{p1.0/T}}{1.5}, \min\left(\cfrac{R_{p1.0/T}}{1.2}, \cfrac{R_{m/T}}{3}\right)\right]
f_d=\max\left[\cfrac{R_{p1.0/T}}{1.5}, \min\left(\cfrac{R_{p1.0/T}}{1.2}, \cfrac{R_{m/T}}{3}\right)\right]
Equations in LaTeX code
f_d=\max\left[\cfrac{R_{p1.0/T}}{1.5}, \min\left(\cfrac{R_{p1.0/T}}{1.2}, \cfrac{R_{m/T}}{3}\right)\right]
\text{else if }\ \text{type }\text{of }\text{material}= \text{Austenitic steels}\wedge 30\le \text{min. }\text{elongation }\text{after }\text{fracture}< 35
\text{else if }\ \text{type }\text{of }\text{material}= \text{Austenitic steels}\wedge 30\le \text{min. }\text{elongation }\text{after }\text{fracture}< 35
Equations in LaTeX code
\text{else if }\ \text{type }$$\text{of }$$\text{material}= \text{Austenitic steels}\wedge 30\le \text{min. }$$\text{elongation }$$\text{after }$$\text{fracture}< 35
f_d=\cfrac{R_{p1.0/T}}{1.5}
f_d=\cfrac{R_{p1.0/T}}{1.5}
Equations in LaTeX code
f_d=\cfrac{R_{p1.0/T}}{1.5}
\text{else}
\text{else}
Equations in LaTeX code
\text{else}
f_d=\min\left(\cfrac{R_{p0.2/T}}{1.5}, \cfrac{R_{m/20}}{2.4}\right)
f_d=\min\left(\cfrac{R_{p0.2/T}}{1.5}, \cfrac{R_{m/20}}{2.4}\right)
Equations in LaTeX code
f_d=\min\left(\cfrac{R_{p0.2/T}}{1.5}, \cfrac{R_{m/20}}{2.4}\right)

Maximum allowed value of the nominal design stress for testing load cases

\text{if }\ \text{type }\text{of }\text{material}= \text{Cast steels}
\text{if }\ \text{type }\text{of }\text{material}= \text{Cast steels}
Equations in LaTeX code
\text{if }\ \text{type }$$\text{of }$$\text{material}= \text{Cast steels}
f_{test}=\cfrac{R_{p0.2/T_{test}}}{1.33}
f_{test}=\cfrac{R_{p0.2/T_{test}}}{1.33}
Equations in LaTeX code
f_{test}=\cfrac{R_{p0.2/T_{test}}}{1.33}
\text{else if }\ \text{type }\text{of }\text{material}= \text{Austenitic steels}\wedge\text{min. }\text{elongation }\text{after }\text{fracture}\geq 35
\text{else if }\ \text{type }\text{of }\text{material}= \text{Austenitic steels}\wedge\text{min. }\text{elongation }\text{after }\text{fracture}\geq 35
Equations in LaTeX code
\text{else if }\ \text{type }$$\text{of }$$\text{material}= \text{Austenitic steels}\wedge\text{min. }$$\text{elongation }$$\text{after }$$\text{fracture}\geq 35
f_{test}=\max\left(\cfrac{R_{p1.0/T_{test}}}{1.05}, \cfrac{R_{m/T_{test}}}{2}\right)
f_{test}=\max\left(\cfrac{R_{p1.0/T_{test}}}{1.05}, \cfrac{R_{m/T_{test}}}{2}\right)
Equations in LaTeX code
f_{test}=\max\left(\cfrac{R_{p1.0/T_{test}}}{1.05}, \cfrac{R_{m/T_{test}}}{2}\right)
\text{else if }\ \text{type }\text{of }\text{material}= \text{Austenitic steels}\wedge 30\le \text{min. }\text{elongation }\text{after }\text{fracture}< 35
\text{else if }\ \text{type }\text{of }\text{material}= \text{Austenitic steels}\wedge 30\le \text{min. }\text{elongation }\text{after }\text{fracture}< 35
Equations in LaTeX code
\text{else if }\ \text{type }$$\text{of }$$\text{material}= \text{Austenitic steels}\wedge 30\le \text{min. }$$\text{elongation }$$\text{after }$$\text{fracture}< 35
f_{test}=\cfrac{R_{p1.0/T_{test}}}{1.05}
f_{test}=\cfrac{R_{p1.0/T_{test}}}{1.05}
Equations in LaTeX code
f_{test}=\cfrac{R_{p1.0/T_{test}}}{1.05}
\text{else}
\text{else}
Equations in LaTeX code
\text{else}
f_{test}=\cfrac{R_{p0.2/T_{test}}}{1.05}
f_{test}=\cfrac{R_{p0.2/T_{test}}}{1.05}
Equations in LaTeX code
f_{test}=\cfrac{R_{p0.2/T_{test}}}{1.05}

Minimum thickness within the gasket for calculation pressure

e_p=0.41\cdot C\cdot\sqrt{\cfrac{P}{f_d}}
e_p=0.41\cdot C\cdot\sqrt{\cfrac{P}{f_d}}
Equations in LaTeX code
e_p=0.41\cdot C\cdot\sqrt{\cfrac{P}{f_d}}

Minimum thickness within the gasket for test pressure

e_{p_{test}}=0.41\cdot C\cdot\sqrt{\cfrac{P_{test}}{f_{test}}}
e_{p_{test}}=0.41\cdot C\cdot\sqrt{\cfrac{P_{test}}{f_{test}}}
Equations in LaTeX code
e_{p_{test}}=0.41\cdot C\cdot\sqrt{\cfrac{P_{test}}{f_{test}}}

Calculation coefficient Y_2 for opening reinforcement

Y_2=\sqrt{\cfrac{C}{C-d}}
Y_2=\sqrt{\cfrac{C}{C-d}}
Equations in LaTeX code
Y_2=\sqrt{\cfrac{C}{C-d}}

The minimum thickness for a flat end with a full-face gasket

e=\max\left\{e_p, e_{p_{test}}\right\}\cdot Y_2
e=\max\left\{e_p, e_{p_{test}}\right\}\cdot Y_2
Equations in LaTeX code
e=\max\left\{e_p, e_{p_{test}}\right\}\cdot Y_2

Minimum thickness for the flanged extension

e_1=0.8\cdot e
e_1=0.8\cdot e
Equations in LaTeX code
e_1=0.8\cdot e

Requirements

d\le 0.5\cdot C
d\le 0.5\cdot C
Equations in LaTeX code
d\le 0.5\cdot C
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