Model Q2 is an industry standard design for general monitoring of
liquid levels industrial processes and tanks. This type of standard liquid level gauge is the simplest and
most reliable device for a direct visual reading of liquid level. Unlike our proprietary sidewall sealed designs, these seal on the face of the glass
with a gasket like designs by other manufacturers.
These units are exactly equivalent to products from other manufacturers. Substitutions for reflex
gauge types are shown below. For transparent gauges, "R" is replaced by "T" in the designations.
| Sizes |
| No. of Sections | Size | Model Q2 | Jerguson | Penberthy | Quest-Tec |
| 1 | 1 | 1120RR | 11R20 | 1RM1 | 11RM |
| 1 | 2 | 1220RR | 12R20 | 1RM2 | 21RM |
| 1 | 3 | 1320RR | 13R20 | 1RM3 | 31RM |
| 1 | 4 | 1420RR | 14R20 | 1RM4 | 41RM |
| 1 | 5 | 1520RR | 15R20 | 1RM5 | 51RM |
| 1 | 6 | 1620RR | 16R20 | 1RM6 | 61RM |
| 1 | 7 | 1720RR | 17R20 | 1RM7 | 71RM |
| 1 | 8 | 1820RR | 18R20 | 1RM8 | 81RM |
| 1 | 9 | 1920RR | 19R20 | 1RM9 | 91RM |
| 2 | 3 | 2320RR | 23R20 | 2RM3 | 32RM |
| 2 | 4 | 2420RR | 24R20 | 2RM4 | 42RM |
| 2 | 5 | 2520RR | 25R20 | 2RM5 | 52RM |
| 2 | 6 | 2620RR | 26R20 | 2RM6 | 62RM |
| 2 | 7 | 2720RR | 27R20 | 2RM7 | 72RM |
| 2 | 8 | 2820RR | 28R20 | 2RM8 | 82RM |
| 2 | 9 | 2920RR | 29R20 | 2RM9 | 92RM |
| 3 | 6 | 3620RR | 36R20 | 3RM6 | 63RM |
| 3 | 7 | 3720RR | 37R20 | 3RM7 | 73RM |
| 3 | 8 | 3820RR | 38R20 | 3RM8 | 83RM |
| 3 | 9 | 3920RR | 39R20 | 3RM9 | 93RM |
| 4 | 7 | 4720RR | 47R20 | 4RM7 | 74RM |
| 4 | 8 | 4820RR | 48R20 | 4RM8 | 84RM |
| 4 | 9 | 4920RR | 49R20 | 4RM9 | 94RM |
Longer products are available on request.
Pressure/Temperature Ratings
(Flanged gauges take flange rating when lower)
| Transparent Glass |
| Deg°F \ Sections No. | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| 100 | 2000 | 1875 | 1750 | 1625 | 1500 | 1375 | 1250 | 1125 | 1000 |
| 200 | 1825 | 1710 | 1595 | 1480 | 1370 | 1255 | 1140 | 1025 | 910 |
| 300 | 1775 | 1665 | 1555 | 1445 | 1335 | 1220 | 1110 | 995 | 885 |
| 400 | 1715 | 1610 | 1500 | 1395 | 1285 | 1180 | 1070 | 960 | 855 |
| 500 | 1620 | 1520 | 1415 | 1315 | 1215 | 1115 | 1010 | 910 | 810 |
| 600 | 1480 | 1385 | 1295 | 1200 | 1110 | 1015 | 925 | 830 | 735 |
| SATURATED STEAM USING MICA |
| 600 | 600 | 600 | 600 | 550 | 500 | 450 | 400 | 350 |
| Reflex Glass |
| Deg°F \ Sections No. | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| 100 | 3000 | 2875 | 2750 | 2625 | 2500 | 2375 | 2250 | 2125 | 2000 |
| 200 | 2735 | 2620 | 2505 | 2395 | 2280 | 2165 | 2050 | 1940 | 1825 |
| 300 | 2660 | 2550 | 2440 | 2325 | 2215 | 2105 | 1995 | 1885 | 1775 |
| 400 | 2565 | 2460 | 2355 | 2245 | 2140 | 2035 | 1925 | 1820 | 1715 |
| 500 | 2425 | 2325 | 2225 | 2120 | 2020 | 1920 | 1820 | 1720 | 1620 |
| 600 | 2215 | 2125 | 2030 | 1940 | 1845 | 1755 | 1660 | 1570 | 1480 |
| SATURATED STEAM RATING 300WSP |
Standard construction includes a solid one-piece chamber machined from bar, forged steel covers,
tempered glass, alloy steel bolts and nuts. Recessed gasket seats prevent gasket movement. Model Q2 gauges
are available in a variety of materials to meet specific corrosive conditions.
In particular, since the only wetted metal part is the liquid chamber body, specifying 316 stainless steel
for the body is a popular and cost effective avenue for better corrosion resistance.
All standard chamber materials
(carbon and stainless steels) are NACE MR-01-75 acceptable materials. Non-frost extensions, illuminators, support
brackets, Kel-F shields, mica shields and special alloys are available. Detailed dimension, pressure, and temperature
ratings are available here.
Available Accessories
- Isolation Valves
- Side or Back Connections
- Flanged Or Socket Weld Connections
- Grafoil, Teflon, HPN Gasketing
- Mica and Kel-F Sheilds
- Drain Valves
- Non Frost Extensions
- Aluminosilicate Glass
- Heating or Cooling Tubes (Both Internal & External)
- Spring Washers
- Illuminators
- Isolation Valves
- Side or Back Connections
- Flanged Or Socket Weld Connections
- Grafoil, Teflon, HPN Gasketing
- Mica and Kel-F Sheilds
- Drain Valves
- Non Frost Extensions
- Aluminosilicate Glass
- Heating or Cooling Tubes (Both Internal & External)
- Spring Washers
- Illuminators
- SS316 Wetted and Non-Wetted Parts Covers and Bolting
- Offshore Coating Per FP-11
- Insulation Jackets
- Expansion Loops and Coils
- Scales (Stainless Steel Scales, Brass Scales, metric and imperial)
Model Q2 gauges are manufactured by Quality Machining & Metal Works, Inc.
