Typical Applications

Figure 1

Application

High/low flowline pressure protection for wellheads with one (1) pneumatically-actuated surface safety valve.


Configuration

Dyna-Trol Model BX-000 high/low pilot with optional remote trip connection.


Operation

Automatic shut-in of the well occurs when the pilot detects a high or low flowline pressure condition, when a remote shutdown is initiated, or when a fire is detected.

Figure 2

Application

High/low flowline pressure protection for wellheads with one (1) hydraulically-actuated surface safety valve.


Configuration

Dyna-Trol Model DX-000-M high/low pilot with gauges and optional manual reset valve.


Operation

Automatic shut-in of the well occurs when the pilot detects a high or low flowline pressure condition. The optional integral manual reset valve requires manual operation to restart the well when flowline pressure returns to normal.

Figure 3

Application

High/low flowline pressure protection for wellheads operating with a replaceable pneymatic control supply source.


Configuration

Dyna-Trol Model BX-000-N high/low pilot with zero gas consumption option.


Operation

The pilot is designed for very low supply consumption during extended operating periods when using a limited-volume supply source, such as nitrogen bottles. Automatic shut-in of the well occurs when the pilot detects a high or low flowline pressure condition.