Gastite® XR2™ Female Coupler Adaptor – DN20 x 3/4 BSP Female No-Hot-Work Gas Connection for DN15 Gastite® CSST to BSP Female Interfaces The Gastite® XR2™ Female Coupler Adaptor is a quality gas fitting to connect DN20 Gastite® CSST to 3/4 BSP female threads—a secure metal-to-metal seal with no hot works, gaskets or O-rings required. With Gastite’s patented Jacket-Lock® design this fitting prevents exposed steel beyond the nut, safer and more installable. For natural gas and LPG applications, this adaptor is reusable, corrosion resistant and compatible with a wide range of domestic and light commercial gas systems. It’s the go-to for installers looking for a durable, easy