Air Set and Spring Set by-Pass Regulators – Meggitt Fuelling

Description

MANUFACTURER: Meggitt Fuelling

Air Set and Spring Set by-pass Regulators – Meggitt Fuelling

F354, F355, F387, F390

F390 (3-inch) and F387 (4-inch) air set by-pass regulators
The Meggitt by-pass regulating valves are normally mounted in pump bypass return lines. They are usually installed as secondary pressure controls. However, where maximum low flow stability is required, they may be utilized as primary pressure controls when used in conjunction with an inline air set demand regulator similar to the Meggitt 4-inch model F370. The airset demand regulator valve will provide positive required deadman closure and surge control features not contained in the by-pass regulator.

The by-pass regulators will maintain a constant pressure at a downstream sensing point, such as a venturi, as a function of the supplied reference pressure. An optional feature allows the valve to also control maximum inlet pressure providing pump outlet pressure protection. Normally these units are capable of acting as secondary controls to larger sized primary or deadman controls. It is our opinion that the by-pass valve should normally be used as the primary control.

F354 (3-inch) and F355 (4-inch) spring set by-pass regulators
The Meggitt F354 and F355 spring set by-pass regulators operate in a similar manner to the F390/F387; however, they can be operated with AC or DC solenoids. They may also be operated by air, but do not require a set regulated air pressure to acquire a specified fuel pressure. They may also stand alone without the use of deadman control. When the spring set valve is used with air deadman control, the air to fuel interface is eliminated.

Key Features

• All 3 inch valves usethe same body and piston design
• All 4 inch valves use the same body and piston design
• The F354/F355 valves do not require a specified amount of air pressure – no air regulations required.
• F387 or F390 can befield converted to a F355 or F354 without removing main body from the line

F354, F355, F387, F390 Datasheet Air Set Spring Set – Meggitt – click here