Watts R20-00 M1 873 Pneumatic Regulator JMM3219T SSTK---G-2-8-1-A-----048190---4
Baker’s notes & crumb story
Description
Watts R20 00 M1 873 Pneumatic Regulator JMM3219T SSTK G 2 8 1 A 048190 4 SSTK G 2 8 1 A 048190 4 Potter and Brumfield CKB 38 70010 Time Delay 1210 Volts