Thread-to-connect S51 Series double shut-off quick couplings are for use with most industrial fluids.
The high-flow, fluid-transfer coupling connects under full system pressure by rotating a female threaded heavy-duty cast-iron wing nut or plated-steel hex nut onto the mating male threaded tip. Couplings are available in standard brass or optional electroless nickel-plated steel for corrosion resistance, added strength, and lower cost. Both versions use the same high-strength internal parts. The couplings minimize air inclusion during connection and fluid spillage during disconnection. They are available in full-flow 0.75, 1.0, and 1.25-in. sizes.
