Dwyer Flex-Tube® Well TypeManometers are designed to meet the need for a direct readingsingle column instrument providing highly accurate pressurereadings; positive, negative or differential. Unlike other makes,Dwyer manometers have no hidden wells or packing glands. Theseinstruments are constructed of shatter-proof clear plastic tubingpermanently bonded to well assemblies with leak-proof gluedjoints. Well assemblies are precisely machined from solid acrylicplastic. Overpressure safety traps assure protection against lossof fluid. Heavy pure white acrylic plastic scales have sharp blacksilk screened figures and graduations sealed with clear mylarcoating. Scales are adjusted with quick-acting positive mechanism.Heavy heat treated aluminum back plates have durable grayhammerloid finish. These manometers are rated to 100 psig (6.89bar). Not recommended for vacuum service beyond 5″ Hg(68″ w.c.). SERIES NO. 1230 MANOMETERS(wall mounting type), Have mounting holes for easyinstallation. They may also be used as portable manometers andcan be hung or attached to any vertical steel surface bymagnetic mounting clips. All parts are fully visible andreadily accessible for cleaning. SERIES NO. 1235 MANOMETERS(panel mounting type), All pressure connections are made fromthe back, with the micrometer zero scale adjustment in frontat the base of the liquid column. MULTI-TUBE MANOMETERS,of the same design as the No. 1235 series are available withany number of tubes mounted on a single panel. They aredesigned for semi-flush panel mounting with all pressureconnections made from the back. Reading columns are on1-1/2″ centers.
| EXAMPLE | 1230 | 8 | W/M | B | Series 1230-8-WM-B Wall Mount Flex-Tube® Well-Type Manometer, range 0-8″ w.c., using water/mercury, with type B connections. |
| SERIES | 1230 1235 |
Wall Mount Flex-Tube® Well-Type Manometer Panel Mount Flex-Tube® Well-Type Manometer |
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| RANGE | 8 12 16 20 24 36 20CM 30CM 40CM 50CM 60CM 90CM |
0-8″ w.c. 0-12″ w.c. 0-16″ w.c. 0-20″ w.c. 0-24″ w.c. 0-36″ w.c. 0-20 cm w.c. 0-30 cm w.c. 0-40 cm w.c. 0-50 cm w.c. 0-60 cm w.c. 0-90 cm w.c. |
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| FLUID | W/M D |
Water/Mercury Red Gage Oil (.826 specific gravity) |
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| OPTIONS | B C D E AT NIST |
(2) molded nylon rapid shutoff tubing connectors, 9′ of rubber tubing and (1) brass terminal tube (2) 1/8″ pipe thread openings (2) compression fittings for 1/4″ O.D. copper or aluminum tubing (2) 3-way vent valves, 1/8″ 1/8 NPT to 1/4″ metal tubing Aluminum Tag NIST Certificate of Calibration |
ACCESSORIES:
- A-101 – 3/4oz dispenser bottle of red gage oil, .826 sp. gr.
- A-102 – 4oz bottle of red gage oil, .826 sp. gr.
- A-103 – 1pt bottle of red gage oil, .826 sp. gr.
- A-104 – 1qt bottle of red gage oil, .826 sp. gr.
- A-126 – 3/4oz dispenser bottle fluorescein green color concentrate.








