Air Vent Bellows Assembly for Midmark - Ritter (Diaphragm Style) RCB089

Features 1/4" compression fittings- both ends, Bronze diaphragm; Stainless steel housing, Mounts to tubing between temperature gauge and reservoir, Actuates within 12 degrees F of saturated steam temperature, See Notes below for serial numbers this part fits Fits: Reservoir Tubing Model(s) This Part Fits: M11, M11D, M7, M9, M9D Notes: CHECK SERIAL NUMBERS HERE: Model M7 - Also fits new model 7's Fits M9 -001 thru -019 with Serial # prefixes CZ, DA, DB, DX, DY, FD & OM. Fits M9D -001 thru -019 with Serial # prefixes FF & FG. Fits M11 -001 thru -019 with Serial # prefixes ES, ET, FP, FR & GB. Fits M11D -001 thru -019 with Serial # prefixes GC & GD. SERVICE TIP: RPI now offers two different Air Vent Bellows Assemblies -- RPI Part #RCB100 and RCB089. There are two different styles of assemblies -- the diaphragm style and the bellows style. Here's the difference. Currently, the RPI RCB089 and the OEM's are both diaphragm style assemblies. This style has only one convolution doing all the work. The other style is a bellows assembly -- the RPI RCB100. This style assembly, offered only by RPI, has several convolutions doing all of the work so it lasts much longer than the diaphragm style. Now you have a choice... It's the RPI advantage!