- All Red Head 5500 Styles couplings are made from cast red brass, C84400 or C83600, ASTM B584 or ASTM B505
- Couplings in this series conform to Government Specifications A-A-59227A, Type A, Styles 1, and 2, Type B, (WW-C-621G);
and A-A-59614, Type III, Styles 7 and 8 (WW-C-624E).
- Lathe cut synthetic or EPDM gaskets included with each coupling.
NFPA 1963, 7.1 - Each coupling shall be equipped with a resilient thread gasket with a durometer of 70 +/-5, Shore A.
NFPA 1963, 7.3 - Each coupling shall be equipped with a resilient tail gasket with a durometer of 60 +/-5, Shore A
.
- Expansion Rings included with each coupling. Made from
seamless soft anneal red brass tubing, UNS 23000 for maximum
expansion without danger of breaking. Chamfered edge prevents cutting of hose.
A-A-55535 - The rings shall be free from scale, grooving, indentations, cracks, scores, dents, and burrs. The
end shall be round and smooth
.
- Ball bearing swivels in all larger couplings, 3" diameter and above.
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