Dixon® Permanent Coupling, Scovill Style, Series: Holedall®, Fitting/Connector Type: Coupling, 2 in Nominal, Grooved, 3-1/8 in Length, Brass, Domestic
Features
Couplings are compact, light and streamlined to eliminate catching on curbs and shrubs
The stem is expanded to nominal ID of hose for a rigid, uniform, full flow area
Couplings are pre-lubricated for assembly
Designed for internal expansion only
Stems are machined from bar stock or solid brass forgings
Compact, lightweight and streamlined to eliminate catching on curbs and shrubs
Pre-lubricated for assembly
Hand and electrically operated installation equipment is available, consult Dixon® for pricing and availability
The working pressure of the 520-H fitting varies with the size of the fitting, the size and construction of the hose and the media being conveyed
Hand and electrically operated installation equipment is available
Do not interchange with other manufacturer's fittings
Dixon holedall stems and ferrules are specifically designed to be used together as a coupling system
Do not use a wrench or vice on ferrule
Holedall couplings, regardless of coupling style, are never to be used for steam service at any pressure
Holedall fittings are not to be used with cable reinforced high pressure hose, 4 or 6 braid wire hydraulic hose or any other service not listed in the recommendations
Strict adherences to ferrule OD range (Internally Expanded) for each hose end to be assembled is essential for satisfactory performance
Hose service working pressure (including surges and spikes) is never to exceed the maximum recommended working pressure for the fitting
The assembly's (hose + coupling) maximum working pressure is the lesser of the hose rated working pressure or the coupling rated working pressure
Media being transported through the hose should be compatible with the stem material
Compatibility of ferrule material with the environment in which it will be used is recommended
Intended for fuel delivery service
Commonly used in the transfer of fuel to homes, airplanes, ships, etc