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.








