BevStream Bolted (Compression) Coupling Systems both insure a leakproof piping joint and eases installation time resulting in installation savings. Bolted Couplings are used to make Piping, Bend and Fitting Connections. All Bolted Couplings are minimum (4) bolt style and ship Pre-Bolted to save time in the field. BevStream Couplings provide for leak proof security, while at the same time result in a rigid connection between piping sections.