The Husky SD-4000 was developed in the 1980s to meet the needs of plumbers and engineers for
a heavy-duty coupling suitable for underground, above ground, seismic, overhead, in-wall and stormwater applications where there are concerns about thrust forces, shear or deflection.
The Husky SD-4000 was the first coupling to carry a corrugated shield, additional, wider clamping bands, and larger screws to accommodate higher torque forces. More Husky SD-4000 couplings have been sold and installed than any other heavy-duty brand, making Husky the go-to coupling when extra
sealing protection is required.
Engineers specify the Husky SD-4000 because they know it performs as advertised. They appreciate the high-quality 304 stainless steel, thicker shield, wider bands with additional torque standard,and floating eyelet design, which enables the bands to adjust during tightening. They also understand the
importance of the genuine Neoprene®gasket that truly meets the ASTM C564 standard (some competitive couplings use synthetic rubber or other rapidly deteriorating material). “It just flat works...”
Plumbers like the ease of installation and rigidity of the coupling in pre-fab, as well as the solid reliability in the field.
There is a reason the Husky SD-4000 has become the industry standard for heavy-duty couplings. “It just flat works,” say both engineers and plumbers. That’s the highest compliment any coupling can get.
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