All aluminum couplings are not created equal.
The Red Head Brass quality advantage is built into every aluminum coupling we sell.
Made from 6061-T6 aluminum seamless extrusions. Meets ASTM B-221 and provides the strength to meet Federal Spec A-A-59227A: Couplings shall not distort, bind, or become inoperative when subjected to a 3000 pound radial compression load as specified in 3.4.4.
Red Head aluminum couplings are Hardcoat Anodized per MIL-A-8625 Type III, Class 1. Hardcoat is a dense coating formed by converting the surface of the aluminum alloy into a hard aluminum oxide.
This process complies with NFPA 1963, 4.12 Corrosion Resistance and provides the completed part with a durable surface that resists corrosion, abrasion, reduces electrolysis and prevents excessive thread wear.
Lathe cut synthetic or EPDM gaskets are included with each coupling:
Are attached as follows:
This construction is compliant with the following:
Conform to the following specifications, including a blunt start first thread known as the Higbee located in line with the Higbee indicator on the lug.
Hose Couplings shall be fabricated from seamless extruded 6061-T6 aluminum and hardcoat anodized per MIL-A-8625 Type III, Class 1.
Male end lugs shall have "LA Taper".
Threads shall be blunt start Higbee cut with indicators on adjacent lugs.
Part identification shall be permanent and stamped prior to hardcoat.
Swivel attachment must be metal rings or bearings, not swaged.
Gaskets shall be lathe cut ozone free EPDM or synthetic rubber.
Expansion rings must be smooth and well rounded soft anneal seamless red brass per UNS 23000.
Couplings and components must meet the requirements of NFPA 1963.