美国`Orange Research`差压表 压差开关DESC-1516DG-1A-3.5B 15/60G#DGS-1C-3.5B-C 1203PGS-1A-25F-C-C-O-60PSID-V 1504DGS-1A-4.5F-C-7 (0-30inH2O,0-7kpa)1804DGS-1A-4.5F-C-7 1804DGS-1C-4.5F-C 1203PGS-1C-2.5F-C-C-0-60PSID-V 1203PGS-1C-2.5F-C-0-30psi-V

1201PGS-1A-2.5B-A