All Red Head 5500 Style couplings are machined from cast red brass, C84400 or C83600, ASTM B584 or ASTM B505.
The Red Head Brass Commitment to Quality and Safety in Brass Couplings
Couplings in this series conform to the following 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).
Expansion Rings:
- Are 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.
Gaskets:
- 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.
Red Head Brass Couplings: Specifications
Hose couplings shall be machined from cast red brass, alloy C84400 or C83600 ASTM B584 or ASTM B505.
Male end rocker lugs shall be tapered to minimize snagging.
Threads shall be blunt start Higbee cut with indicators on adjacent lugs.
Part identification shall be permanent and stamped.
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.
