A B 1-3/4 [44.45] 3/4 [19.05] 2-1/6 [52.39] 1-1/8 [28.58] A B FLEX-TUBE ® U-TUBE MANOMETERS The Series 1221/1222/1223 Flex-Tube ® U-Tube Manometers combine the inherent accuracy of the “U” Tube with the durability of tough, long-lasting plastic construction. The columns are made of 0.375˝ O.D. flexible and shatterproof clear butyrate tubing and are backed by a white scale channel to provide maximum color contrast. These manometers are ideal wherever a portable, direct reading manometer is needed. FEATURES/BENEFITS • Suitable for total pressures up to 100 psi • High contrast scale for better precision when measuring APPLICATIONS • Duct static pressure • Calibration labs • Filter monitoring Series 1221 Flex-Tube ® U-Tube Manometer Our simplest, lowest cost basic U-gage. A dependable U-tube manometer that withstands hard use and provides accurate, high visibility readings. For use with water, mercury or red gage fluid. For mercury filled manometers, a scale clamp bar, Dwyer ® Part No. A-363 (available as an extra for Series 1221 — and standard on Series 1222) is recommended. One pair of carrying plugs and a pair of non-kink vinyl tube connectors are included with each manometer. Series 1222 Flex-Tube® U-Tube Manometer All the features of the 1221 plus magnetic clips for mounting to any vertical steel surface, and clamp bar to insure against U-tube slipping. (Especially recommended for manometers used with mercury.) Both magnets are easily removed and replaced at the user’s convenience. Series 1223 Flex-Tube ® U-Tube Manometer Our finest U-gage — for either portable or stationary use. Safety traps prevent loss of indicating fluid in case of accidental over-pressure. Tubing is permanently bonded to a molded, high impact acrylic plastic top that contains safety traps. Large magnetic clips and clamp bar are provided. Standard type “a” connections include two rapid shut-off type molded nylon tubing connections, two 3-foot lengths of flexible Tygon® plastic tubing, and two 1/8˝ pipe thread to tube adapters. 122112221223 Range Hg Required to Fill 1221, 2 & 3 Scale Length“A” 1221 & 2 O.A. Length “B” 1223 O.A. Length “B” Inches H 2 OMillimeters H 2 OGramsOuncesW/MDW/MDW/MD 8 (4-0-4) 12 (6-0-6) 16 (8-0-8) 20 (10-0-10) - 24 (12-0-12) 36 (18-0-18) - M200 (100-0-100) M300 (150-0-150) M400 (200-0-200) - M600 (300-0-300) - - M1000 (500-500) 178.5 225.5 269 314.5 353.1 379.7 491.1 526.6 6.3 7.9 9.5 11.1 12.4 13.4 17.3 18.5 12-1/4 16-1/4 20-3/8 24-1/4 27-7/8 28-1/4 40-1/4 43-5/8 14 18-7/8 23-5/8 28-1/2 32-7/8 33-3/8 47-7/8 52 15-1/4 19-1/4 23-1/4 27-1/4 30-3/4 31-1/2 43-1/4 46-1/2 17 21-3/4 26-1/2 31-1/2 35-3/4 36-1/4 50-3/4 55 18-1/2 21-1/8 26-1/8 30-1/8 33-5/8 33-3/8 46-1/8 49-3/8 19-7/8 24-5/8 30-3/8 34-3/8 38-5/8 39-1/8 53-5/8 57-7/8 Note: Not recommended for vacuum service above 5 in. Hg (68 in w.c.). ACCESSORIES - STANDARD ModelDescription 1221 1222 1223 2 plastic carrying plugs; 2 flexible plastic tubing connectors for attachment of 3/16˝ rubber or plastic tubing without kinking. 1 ounce bottle .826 sp. gr. red gage fluid furnished for “D” style manometers. Fluorescein green dye concentrate furnished with “W/M” style manometers. 2 magnetic mounting clips; tube clamp; 2 plastic carrying plugs and 2 flexible plastic tubing connectors for attachment of 3/16˝ rubber or plastic tubing without kinking. 1 ounce bottle .826 sp. gr. red gage fluid furnished for “D” style manometers. Fluorescein green dye concentrate furnished with “W/M” style manometers. Magnetic mounting clips; tube clamp and Type “a” connections consisting of two rapid shut off molded nylon tubing connectors; two 1/8˝ pipe thread to tube adapters; two 3-foot lengths of Tygon ® plastic tubing, 1 ounce bottle .826 sp. gr. red gage fluid is furnished for “D” style manometers; fluorescein green dye concentrate with “W/M” style. Tygon ® is a registered trademark of Saint-Gobain Performance Corporation SERIES 1221/1222/1223 Manometers, Portable TEST & DATA 179DWYER INSTRUMENTS, INC. | dwyer-inst.com OPTIONS To order add suffix:Description -NISTNIST traceable calibration certificate Example: 1230-8-W/M-NIST MODEL CHART ModelModelModelRanges 1221-8-W/M 1221-12-W/M 1221-16-W/M 1221-20-W/M 1221-24-W/M 1221-36-W/M 1221-M200-W/M 1221-M300-W/M 1221-M400-W/M 1221-M600-W/M 1221-M1000-W/M 1222-8-W/M 1222-12-W/M 1222-16-W/M 1222-20-W/M 1222-24-W/M 1222-36-W/M 1222-M200-W/M 1222-M300-W/M 1222-M400-W/M 1222-M600-W/M 1222-M1000-W/M 1223-8-W/M 1223-12-W/M 1223-16-W/M 1223-20-W/M 1223-24-W/M 1223-36-W/M 1223-M200-W/M 1223-M300-W/M 1223-M400-W/M 1223-M600-W/M 1223-M1000-W/M 8 (4-0-4) in w.c. 12 (6-0-6) in w.c. 16 (8-0-8) in w.c. 20 (10-0-10) in w.c. 24 (12-0-12) in w.c. 36 (18-0-18) in w.c. M200 (100-0-100) mm w.c. M300 (150-0-150) mm w.c. M400 (200-0-200) mm w.c. M600 (300-0-300) mm w.c. M1000 (500-0-500) mm w.c. Note: To order models with red gage fluid change -W/M to -D. TestData_2021.indb 1797/15/20 2:12 PMNext >