Grinnell Fire Rigid Coupling, Series: 472, Fitting/Connector Type: Coupling, 4 in Nominal, Grooved, 1.97 in Thickness, 600 psi, 316 Stainless Steel, 7.5 in W x 5.81 in H

Rigid Coupling is a Stainless Steel coupling made of ASTM A-743/A743M cast stainless Steel which is the cast equivalent to 316 Stainless Steel. It is designed for installation on grooved Stainless Steel Schedules 5, 10, and 40 pipe and grooved fittings. The stainless steel material is suitable for a variety of aggressive corrosive environments. The Figure 472 provides a rigid joint connection by firmly gripping along the circumference of the pipe grooves. The Figure 472 Rigid Coupling is a proven dependable method of joining pipe and is an economical alternative to welding, threading or using flanges. It is capable of pressures up to 750 psi (41,4 bar) depending on pipe size and wall thickness.