Model 621 • Flow Switch, Inline Body 216 | Flow & Accessories > Model 621 | deltacnt.com MODEL EXAMPLE 621 - - - - - - - - YCY A 1"FPTY AA Model Numbering System MODEL DESCRIPTION 621 Flow Switch, Inline Body MODEL WETTED MATERIAL¹,² OUTPUT SWITCH³ OPTIONS4 PROCESS CONNECTION WETTED MATERIAL¹,² BODY TRIM PADDLE LCY Brass Stainless steel 316 Stainless Steel¹ SCY Carbon Steel Stainless steel 316 Stainless Steel¹ YCY 316 Stainless Steel Stainless steel 316 Stainless Steel¹ YYY 316 Stainless Steel 316 Stainless Steel 316 Stainless Steel² OUTPUT SWITCH³ DESCRIPTION A General purpose, SPDT, 5 A, +220 °F max B High temperature, SPDT, 5 A, +450 °F max C General purpose, DPDT, 5 A, +220 °F max³ H High temperature, DPDT, 5 A, +450 °F max³ PROCESS CONNECTION DESCRIPTION AVAILABLE TYPES 0.5”FPTL 0.5 in FPT, Brass LCY 0.75”FPTL 0.75 in FPT, Brass LCY 1”FPTL 1 in FPT, Brass LCY 1.5”FPTL 1.5 in FPT, Brass LCY 2”FPTL 2 in FPT, Brass LCY 2.5”FPTL 2.5 in FPT, Brass LCY 3”FPTL 3 in FPT, Brass LCY 4”FPTL 4 in FPT, Brass LCY 0.5”FPTS 0.5 in FPT, Carbon steel SCY 0.75”FPTS 0.75 in FPT, Carbon steel SCY 1”FPTS 1 in FPT, Carbon steel SCY 1.25"FPTS 1.25 in FPT, Carbon steel SCY 1.5”FPTS 1.5 in FPT, Carbon steel SCY 2”FPTS 2 in FPT, Carbon steel SCY 2.5”FPTS 2.5 in FPT, Carbon steel SCY 3”FPTS 3 in FPT, Carbon steel SCY 4”FPTS 4 in FPT, Carbon steel SCY 0.5”150RS 0.5 in Class 150 raised face flange, Carbon steel SCY 0.75”150RS 0.75 in Class 150 raised face flange, Carbon steel SCY 1"150RS 1 in Class 150 raised face flange, Carbon steel SCY 1.5"150RS 1.5 in Class 150 raised face flange, Carbon steel SCY 2"150RS 2 in Class 150 raised face flange, Carbon steel SCY 2.5"150RS 2.5 in Class 150 raised face flange, Carbon steel SCY 3"150RS 3 in Class 150 raised face flange, Carbon steel SCY 4"150RS 4 in Class 150 raised face flange, Carbon steel SCY (continued on following page)
