Model Number CW-SSTL is used as a safe method of obtaining a water sample from boilers, feedwater lines, and steam lines. Stainless Steel Shell. Stainless Steel End Caps. 1/4" NPT Stainless Steel Adaptors. Continuous 316 Stainless Steel Coil. Coil rated to 2,500 psi. Shall Rated to 250 psi. Overall Length 13 5/8". Shell Diameter 3 1/2". 3" Pipe Clamp. 3/8" Steel Female Inlet and Outlet. 13 pounds