Filter Separator for Fluid Pressure, Aviation & Diesel Fuel - 1626M | Cla-Val

Cla-Val 1626M for Fuel-Water Filter Separator Control

The Cla-Val 1626M is a control device designed for marine fuel-water filter separators in aviation fuel and diesel fuel systems. Product documentation describes it as a filter separator for pressurized fuel, while Cla-Val classifies it as a separator control to prevent water ingress in aviation and diesel fuel circuits.

Functional Role

The 1626M should be evaluated as part of a water/fuel separation assembly, not as a simple in-line filter. Cla-Val technical literature specifies it as a float control for marine filter separators in aviation and diesel fuel distribution. Its function is linked to water level monitoring in the separator sump and supports automatic drain and fuel shutoff logic.

Typical Applications

• Av-Gas / JP-5 refueling systems
• Diesel fuel transfer or distribution lines
• Fuel-water separator skids
• Marine pressurized fuel systems
• Installations requiring free water separation upstream of downstream equipment

Standards and Connections

The Cla-Val marine quick reference lists filter separator controls for Av-Gas, JP-5, and Diesel Fuel, referencing MIL-F-15618 (SHIPS) and Class 1 with automatic drain & fuel shutoff controls. Flanged connections per MIL-F-20042 Class 150 / Class 250 and, where specified, union connections per MIL-F1183 are available.

Selection Considerations

Prior to procurement, confirm:

• Fuel type: Av-Gas, JP-5, or diesel
• Installation location per P&ID of the filter separator
• Requirement for automatic drain and fuel shutoff
• Connection type: flanged or union, per system design
• Operating pressure and flange class
• Compatibility with existing drain and shutoff valves

Maintenance

Inspection should include float operation, sump cleanliness, drain circuit response, connection tightness, water presence in fuel, and separator differential pressure.

FAQ

Is this a simple fuel filter?
No. It is part of a water/fuel separation assembly with level and drain control.

Which fuels is it suitable for?
Aviation fuel and diesel fuel.