Shut Off Pressure Calculator

Formula

To calculate the Shut Off Pressure:

\[ SOP = 1.2 \times (DH + SH) \]

Where:

\(SOP\) is the Shut Off Pressure (psi)
\(DH\) is the differential head (psi)
\(SH\) is the suction head (psi)

What is Shut Off Pressure?

Shut off pressure is the maximum pressure that a pump can generate when there is no flow through the pump. It is calculated by adding the differential head and the suction head, then multiplying by 1.2. This is an important parameter in pump and system design as it determines the capability of the pump to handle certain pressure conditions.

Example Calculation 1

Let's assume the following values:

Differential Head (\(DH\)) = 50 psi
Suction Head (\(SH\)) = 10 psi

Using the formula:

\[ SOP = 1.2 \times (50 + 10) = 72 \text{ psi} \]

The shut off pressure is 72 psi.

Example Calculation 2

Let's assume the following values:

Differential Head (\(DH\)) = 30 psi
Suction Head (\(SH\)) = 20 psi

Using the formula:

\[ SOP = 1.2 \times (30 + 20) = 60 \text{ psi} \]

The shut off pressure is 60 psi.