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C-19

Coupling Systems

DPL417

877.963.4966 •

dixonvalve.com

C

Holedall: Externally Expanded

Holedall

External Swage Coupling System

The Holedall™ coupling system provides outstanding strength, durability and safety.

The Holedall™ system is a method of attaching couplings to hose utilizing a progressive swage. The patented Holedall™

couplings include a Holedall™ stem and a specially engineered ferrule. The hydraulic swaging of the coupling to the hose

is accomplished by pushing the ferrule through a die which reduces the ferrule OD, thus providing a 360° uninterrupted

compression band around the hose.

A hydraulic ram is the only piece of machinery necessary to accomplish the coupling. Available in five different sizes - 15, 25,

50, 100 and 350 ton see page C-17 - these rams will accommodate dies and pushers of various sizes so that hoses up to 10" in

diameter may be coupled.

This multi-purpose, high pressure coupling system requires no bolts and results in a clean coupling with no protrusions. The

swaging operation is fast and hose of various lengths and different styles can be coupled. Ease of operation, flexibility and

economy make the Holedall™ method an unequalled assembly system.

Features:

provides long-lasting efficiency and safety

lightweight coupling consisting of ferrule and stem

streamlined, no protrusions to snag on equipment

available in stainless steel and carbon steel

available in multiple configurations: pipe thread, plain end, grooved or flanged ends

cross-section of Holedall™ externally swaged assembly

displacement of hose carcass

into flared portion of coupling

traps and seals hose end

ferrule

stem

hose ID

do not use wrench or vice on ferrule

Holedall™ stems and ferrules are specifically designed to be used together as a coupling system.

Due to differences in dimensions and tolerances, for safety reasons,

do not use other manufacturer's stems or ferrules with Holedall™ products.