The Instantor RP510200 ACR R-Press 3/8" Straight Coupler is a high-performance press fitting designed for refrigeration, air conditioning, heat pump, VRF and VRV pipework installations. As part of the Instantor R-Press ACR range, it provides a fast, secure, and flame-free alternative to brazing, helping reduce installation time while delivering reliable, leak-free connections. Designed for joining two lengths of 3/8" ACR copper tube, the coupler is suitable for high-pressure applications and is compatible with approved R-Press tools and jaws. Supplied in packs of 5, it offers a safe and efficient jointing solution for modern ACR systems. Suitable for high-pressure ACR applications, the Instantor R-Press range has been developed specifically for modern refrigeration and air conditioning systems, offering professional installers a safe and efficient alternative to traditional jointing methods.