MSW Dry Break Fuel Restrictor

Many endurance racing organizations require a fuel flow restrictor in your dump cans to slow down pitstops.  These restrictors must be a specific size that is checked for compliance at the track.   They must also be made of a fuel safe material, and ideally they flow better than just a generic orifice.

These restrictors are machined from a solid rod of gray PVC, which is completely fuel safe.

We tested four different designs to find the fastest flowing profile, coming up with one that on average flowed 3 seconds per 6 gallon jug of fuel faster than any other alternate design.

Features:

• Shoulder machined on end to keep restrictor from lodging itself into dry break
• Size engraved into lip of restrictor (MSW-FR-010= Fuel Restrictor 1″)
• Gray PVC material is fuel safe for all common gasoline blends
• Fast flowing design that is compliant to series that require a 1″ restrictor.
• Will not soften or deteriorate like 3D printed restrictors.
• Compatible with ATL, Red Head, Allstar, and Fuel Safe 2.25″ or 1.5″ probe dry breaks*

*Should fit any dry break probe with a 2″ ID.  The 2.5″ probe dry break typically has a 2″ ID and is designed for 2.25″ ID hose.

Compliant with WRL Rule 3.j.:

The narrowest point of the hose, nozzle or funnel spout must be no larger than 1.000” inside diameter and made of a solid material. Fuel jugs determined to be noncompliant via go/no-go gauge will result in a 1 lap penalty per fueling stop from the beginning of the race until the jugs are in compliance.

Now available in a 1.20″ inside diameter to meet WRL Rule 3.n.:

Front & Rear Fill Systems: Any cars utilizing a front hood or rear trunk refueling system must follow all requirements of D.3.l and D.3.m but may utilize a 1.200” inside diameter restrictor made of a solid material. To be eligible the fill port must be within 4.00” of the centerline of the vehicle as viewed from the front / back.