OPW 3/4 in. 316 Stainless Steel Stop-Lok™ Multi-Application Male Coupler - Nitrile Rubber

Please choose an option below
3/4 in.
Stainless Steel
Nitrile Rubber
Coupling Type:
Adaptor (Male)
5.00 LBS
$73.67 and Under
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OPW 3/4 in. 316 Stainless Steel Stop-Lok™ Multi-Application Male Coupler - Nitrile Rubber

For decades, the efficiency of facilities in loading and unloading products has relied on union and ground-joint fittings. OPW's Stop-Lok™ Multi-Application Coupler takes the reliability and functionality of traditional fittings to the next level with innovative features. Available in a range of sizes, these couplers are constructed from durable 316 stainless steel, ensuring longevity in various applications. With an operational temperature range spanning from -20°F to 400°F (-29°C to 204°C), these couplers can handle demanding environments with ease.

For safe, easy, and reliable fluid handling, choose the Stop-Lok™ Multi-Application Coupler. It's your go-to solution for tight seals, tough connections, and efficient fluid management in a variety of industrial settings.

Coupling Type: Adaptor (Male)


  • Tight Seal, Tough Connection: Achieve a secure, leak-free connection with a simple twist, quick and tool-free.
  • Material: Made from high-quality 316 stainless steel for durability and corrosion resistance.
  • Pressure Ratings: Capable of handling pressures up to 400 PSI.
  • Connection Options: Versatile connectivity options include FNPT, Butt weld, and Hose shank.
  • Sizes: Available in a variety of sizes to suit various applications.
  • Wide Temperature Range: Operates effectively in temperatures ranging from -20°F to 400°F, depending on the seals specified.
  • Applications: Suitable for a wide range of applications, including chemical, water lines, wastewater, liquid terminal, steam lines, hydrocarbon drain, heating and cooling, and light-duty chemicals.


  • Size: 3/4 in.
  • Material: 316 Stainless Steel
  • Seal Material: Nitrile Rubber
  • Pressure Rating: 400 PSI
  • Temperature Range: -20°F to 400°F
  • Coupling Type: Adaptor (Male)


Specifications Sheet (PDF Download)