Benefits & Features

  • Maximum protected level gauges using 34mm wide glass
  • Pressures up to 3270 PSIG @ 100°F, Temperatures up to 800°F
  • Standard gauges rated up to 300 PSIG @ 421°F Saturated steam
  • Standard Gauges with 1/2” FNPT End Connections (in stock)
  • Steam Configurated Gauges for over 300 PSIG available in transparent gauges (side connected configurations in stock)
  • Optional 3/4” FNPT connections and 1/2” or larger flanged connections available in end, side, or back connected configurations
  • Reflex Gauges provide economical level indication using one glass and per chamber/section. The level of the media in the vessel appears black and the prismatic glass reflects back silver where media is not present. Light is only required in the front of the gauge.
  • Transparent Gauges utilize two glasses, one on each side of the chamber for direct visual observation of the vessel’s media, level, quality, and color. Light is required from the back.
  • Wetted Parts conform to NACE MR0175 & MR0103
  • All parts listed in ASTM & ASME B31.3
  • Carbon Steel Covers are Shrouded to Protect the Glass Edges
  • All Gages feature a one-piece chamber design, regardless of length

Reflex vs Transparent

  • Reflex Gauges provide economical level indication using one glass per section. The level of the media in the vessel appears black and the prismatic glass reflects back silver where the liquid is not present. Light is only required in the front of the gauge.
  • Transparent Gauges utilize two glasses, one on each side of the chamber for direct visual observation of the vessel’s liquid, level, quality, and color. Light is required from the back.
General Differences – Series H13BReflexTransparent
Glasses per section12
Prismatic Glass that reflects back (requires a frontal light source)YesNo
Clear Glass to see through (requires a rear light source)NoYes
Clear LiquidsRecommendedYes
Non-clear liquidsYesRecommended
Higher non-steam ratings with Reflex gaugesYes-
Saturated steam service up to 300 PSIGYesYes
Saturated steam service up to 600 PSIGNoYes
Standard Non-Steam Specifications*
Wetted MaterialsNon-Wetted Materials
StyleGauge
Type
ChamberGlassGasketCoverCushionsFastenersNon-Steam Pressure Ratings
RReflexCarbon SteelTempered BorosilicateGarlock® IFG-5500Carbon Steel (Painted)Garlock® IFG-5500Plated SteelUp to 3270 PSIG @ 100°F See charts for specific ratings
316SS
/316LSS
TTransparentCarbon SteelTempered BorosilicateGarlock® IFG-5500Carbon Steel (Painted)Garlock® IFG-5500Plated SteelUp to 2000 PSIG @ 100°F See charts for specific ratings
316SS
/316LSS

*Optional materials are available for cover, glass, gaskets, and fasteners. See matrix or consult factory.
Notes: Gauges or valves with flanged connections may derate the entire gauge when rated lower than the gauge.
Gauges over 165Lbs are automatically supplied with a gauge support bracket in the center or close to the center of gauge

Standard Steam Specifications*
Wetted MaterialsNon-Wetted Materials
StyleGauge TypeChamberGlassGasketGlass ShieldCoverCushionsFastenersSaturated Steam Pressure Ratings
RReflexCarbon SteelTempered BorosilicateGraphiten/aCarbon Steel (Painted)Garlock® IFG-5500Plated SteelAll Sizes 300 PSIG @ 421°F
316SS
/316LSS
TTransparentCarbon SteelTempered BorosilicateGraphiteMica V4Carbon Steel (Painted)Garlock® IFG-5500Plated SteelUp to 600 PSIG @ 488°F See charts below for specific ratings
316SS
/316LSS

*Optional materials are available for cover, glass, gaskets, and fasteners. See matrix or consult factory.

Notes: Gauges or valves with flanged connections may derate the entire gauge when rated lower than the gauge.
Gauges over 165Lbs are automatically supplied with a gauge support bracket in the center or close to the center of gauge
 

Reflex Gauge Ratings

Reflex Gauge Ratings (PSIG)
Non-SteamSaturated Steam
Borosilicate GlassAluminosilicate GlassBorosilicate Glass
Glass Size100°F200°F300°F400°F500°F600°F700°F800°F(No Shields)
132703090290027002510228520801870300 PSIG @ 421°F
231402970279026002410219019901790300 PSIG @ 421°F
330002860267024902305210019101720300 PSIG @ 421°F
428802740256023802205201018201640300 PSIG @ 421°F
527502620245022702100191517401560300 PSIG @ 421°F
626302500234021702000182016501480300 PSIG @ 421°F
725102380222020601900173015701410300 PSIG @ 421°F
823902260211019501800164014801330300 PSIG @ 421°F
922502150200018501700155014001250300 PSIG @ 421°F

Notes:
Adding graphite gaskets can extend the life of the glass in steam.
Flanged connections on gauge or valves will derate the entire gauge when rated lower than the gauge.

Transparent Gauge Ratings

Transparent Gauge Ratings (PSIG)
Non-SteamSaturated Steam
Borosilicate GlassAluminosilicate GlassBorosilicate Glass
Glass Size100°F200°F300°F400°F500°F600°F700°F800°FMica Shield Protected
120001900177016751530135012201100600 PSIG @ 488°F
218501780166015751450127511401030600 PSIG @ 488°F
31750166015501470135011801070960600 PSIG @ 488°F
4160015501450135012501100990890600 PSIG @ 488°F
5150014401330125011501010920820550 PSIG @ 479°F
613501300122011501050925840750500 PSIG @ 470°F
71250117511001050950850760690450 PSIG @ 459°F
8110011601000925850750690620400 PSIG @ 448°F
91000950900850750675610550350 PSIG @ 434°F

Notes:
Saturated steam applications above 300 PSIG @ 421°F require Mica Shields and upgraded Graphite gaskets.
Adding graphite gaskets and mica shields can extend the life of the glass in all steam applications.
Flanged connections on gauge or valves will derate the entire gauge when rated lower than the gauge.

End Connected Dimensions

Standard Dimensions – End Connected
Section
Size
Visible
Length
Overall
Length
Approximate
Weight
Minimum Vessel Centers with 1/2" MNPT Close Nipples (in Inches)
ReflexTransparent
InchesMMInchesMMLbsKgsLbsKgsWith Series V11B Valves Rigid Gauge Conn.s*With Series V11B Valves Union Gauge Conn.s*
113.750955.25013394.11095.99.37511.875
124.7501216.250159104.51246.810.37512.875
135.7501467.250184125.51307.711.37513.875
146.7501718.250210135.91379.112.37514.875
157.8752009.375238156.815510.013.50016.000
169.12523210.625270177.716311.414.75017.250
1710.25026011.750298198.618612.715.87518.375
1811.87530213.375340219.519614.117.50020.000
1912.62532114.1253592210.021715.018.25020.750
2313.00033014.5003682310.522815.918.62521.125
2415.00038116.5004192712.324817.720.62523.125
2517.25043818.7504762913.226120.022.87525.375
2619.75050221.2505403415.527922.725.37527.875
2722.00055923.5005973716.829425.027.62530.125
2825.25064126.7506794219.110928.230.87533.375
2926.75067928.2507184420.012429.532.37534.875
3630.37577231.8758105022.713034.136.00038.500
3733.75085735.2508955625.513737.339.37541.875
3838.62598140.12510196328.615542.344.25046.750
3940.875103842.37510766630.016344.546.50049.000
4745.500115647.00011947433.618649.551.12553.625
4852.000132153.50013598438.219656.457.62560.125
4955.000139756.50014358840.021759.160.62563.125
5757.250145458.75014929342.322862.362.87565.375
5865.375166166.875169910547.724870.571.00073.500
5969.125175670.625179411150.526174.174.75077.250
6878.750200080.250203812657.327984.584.37586.875
6983.250211584.750215313360.529489.188.87591.375
7892.125234093.625237814766.810998.697.750100.250
7997.375247398.875251115570.5124103.6103.000105.500
88105.5002680107.000271816976.8130112.7111.125113.625
89111.5002832113.000287017780.5137118.6117.125119.625
98118.8753019120.375305819086.4155126.8124.500127.000
99125.6253191127.125322919990.5163133.6131.250133.750

*Minimum centers for Stainless Steel gauges are 1/4” longer.

Side Connected Dimensions

Standard Dimensions – Side/Back Connected*
Section SizeVisible LengthGauge CentersMinimum Vessel Centers with 1/2" FNPT Connections (in Inches)
MinimumMaximum
InchesMMInchesMMInchesMMWith Series V11B Valves Offset Inside (Std)With Series V11B Valves Offset Outside
113.750954.52911515.7504003.0296.029
124.7501215.52714016.7504254.0277.027
135.7501466.25915917.7504514.7597.759
146.7501717.52719118.7504766.0279.027
157.8752008.65022019.8755057.15010.150
169.1252329.47424121.1255377.97410.974
1710.25026011.08328222.2505659.58312.583
1811.87530212.69032223.87560611.19014.190
1912.62532112.69032224.62562511.19014.190
2313.00033013.50934325.00063512.00915.009
2415.00038115.77740127.00068614.27717.277
2517.25043818.02545829.25074316.52519.525
2619.75050220.09951131.75080618.59921.599
2722.00055922.83358034.00086421.33324.333
2825.25064126.06566237.25094624.56527.565
2926.75067926.81568138.75098425.31528.315
3630.37577230.72478042.375107629.22432.224
3733.75085734.58387845.750116233.08336.083
3838.62598139.440100250.625128637.94040.940
3940.875103840.940104052.875134339.44042.440
4745.500115646.333117757.500146144.83347.833
4852.000132152.815134264.000162651.31554.315
4955.000139755.065139967.000170253.56556.565
5757.250145458.083147569.25175956.58359.583
5865.375166166.190168177.375196564.69067.690
5969.125175669.190175781.125206167.69070.690
6878.750200079.565202190.750230578.06581.065
6983.250211583.315211695.250241981.81584.815
7892.125234092.9402361104.125264591.44094.440
7997.375247397.4402475109.375277895.94098.940
88105.5002680105.3152675117.5002985104.815107.815
89111.5002832111.5652834123.5003137110.065113.065
98118.8753019119.6903040130.8753324118.190121.190
99125.6253191125.693193137.6253496124.190127.190

*For side and back connect gauges, we recommend Vessel Centers to be longer than Visible Glass Length to avoid trapping fluids in the bottom of the gauge.
Contact our Sales Dept. for back connected transparent gauge limitations and dimensions.
 

Configuration Options

Configuration Options
 

McDonnel & Miller Low Water Cut-Offs

Gauges & Valves for
McDonnel & Miller™ Low Water Cut-Offs on Steam Boilers
McDonnel & Miller™ Low Water Cut-OffsChoose a Gauge and a Valve set
Model NoCenters TappingsTappings Size FNPTPressure PSIG300 WSP Reflex Armored Gage Side Connected Carbon SteelVisible Glass350 – 450 WSP Transparent Armored Gauge Side Connected w/ Mica Shields Carbon SteelVisible Glass450 WSP Armored Gauge Valves Non-Auto Ball Checks Carbon Steel450 WSP Armored Gauge Valves ASME Ball Checks Carbon Steel
157S11-1/2"1/2"150H13B-R17-05NR-AAA-BJL-XX-13.00010-1/4"H13B-T17-05NR-AAA-BJL-4X-13.00010-1/4"V11B-450-04-AXA-04U-AAJV11B-450-04-ABA-04U-AAJ
157S-A11-1/2"3/4"150V11B-450-05-AXA-04U-AAJV11B-450-05-AXA-04U-AAJ
157S-A-M11-1/2"3/4"150
157S-M11-1/2"1/2"150V11B-450-04-AXA-04U-AAJV11B-450-04-ABA-04U-AAJ
157S-MD11-1/2"1/2"50
157S-M-MD11-1/2"1/2"50
157S-R11-1/2"1/2"150
157S-RBP-MD11-1/2"1/2"50
157S-R-M11-1/2"1/2"150
157S-RL12-3/4"1/2"150H13B-R19-05NR-AAA-BJL-XX-14.25012-5/8"H13B-T19-05NR-AAA-BJL-4X-14.25012-5/8"
157S-RL-M12-3/4"1/2"150
157511-1/2"1"250H13B-R17-05NR-AAA-BJL-XX-13.00010-1/4"H13B-T17-05NR-AAA-BJL-4X-13.00010-1/4"V11B-450-06-AXA-04U-AAJV11B-450-06-ABA-04U-AAJ
19312-3/4"1/2"150H13B-R19-05NR-AAA-BJL-XX-14.25012-5/8"H13B-T19-05NR-AAA-BJL-4X-14.25012-5/8"V11B-450-04-AXA-04U-AAJV11B-450-04-ABA-04U-AAJ
193-7B12-3/4"1/2"150
193-7BM12-3/4"1/2"150
193-A11-1/2"1/2"150H13B-R17-05NR-AAA-BJL-XX-13.00010-1/4"H13B-T17-05NR-AAA-BJL-4X-13.00010-1/4"
193-A-7B11-1/2"1/2"150
193-A-7BM11-1/2"1/2"150
193-A-M11-1/2"1/2"150
193-B12-3/4"3/4"150H13B-R19-05NR-AAA-BJL-XX-14.25012-5/8"H13B-T19-05NR-AAA-BJL-4X-14.25012-5/8"V11B-450-05-AXA-04U-AAJV11B-450-05-AXA-04U-AAJ
193-B-7B12-3/4"3/4"150
193-B-M12-3/4"3/4"150
193-D11-1/2"1/2"150H13B-R17-05NR-AAA-BJL-XX-13.00010-1/4"H13B-T17-05NR-AAA-BJL-4X-13.00010-1/4"V11B-450-04-AXA-04U-AAJV11B-450-04-ABA-04U-AAJ
193-D-7B11-1/2"1/2"150
193-D-M11-1/2"1/2"150
193-G11-1/2"1/2"150
193-M12-3/4"1/2"150H13B-R19-05NR-AAA-BJL-XX-14.25012-5/8"H13B-T19-05NR-AAA-BJL-4X-14.25012-5/8"
19411-5/8"1/2"250H13B-R17-05NR-AAA-BJL-XX-13.12510-1/4"H13B-T17-05NR-AAA-BJL-4X-13.12510-1/4"V11B-450-04-AXA-04U-AAJV11B-450-04-ABA-04U-AAJ
194-A12-7/8"1/2"250H13B-R19-05NR-AAA-BJL-XX-14.37512-5/8"H13B-T19-05NR-AAA-BJL-4X-14.37512-5/8"
194-A-7B12-7/8"1/2"250
194-M11-5/8"1/2"250H13B-R17-05NR-AAA-BJL-XX-13.12510-1/4"H13B-T17-05NR-AAA-BJL-4X-13.12510-1/4"
194-7B11-5/8"1/2"250
194-7BM11-5/8"1/2"250
194-B12-7/8"3/4"250H13B-R19-05NR-AAA-BJL-XX-14.37512-5/8"H13B-T19-05NR-AAA-BJL-4X-14.37512-5/8"V11B-450-05-AXA-04U-AAJV11B-450-05-AXA-04U-AAJ

*Customer to specify port NPTF size of Quick Hook-Up fittings added to Low Water Cut-off.
**Consult Sales Dept. for nipples and or assembly of valves to gauges.
McDonnell & Miller is a trademark of Zylem Inc. or one of its subsidiaries.

Options

  • Reflex gauges with side or back connections in 3/4” FNPT, 1/2” and larger flanged connections (contact factory)
  • Transparent gauges with side connections in 3/4” FNPT, 1/2” and larger flanged connections (contact factory)
  • Aluminosilicate glass for higher temperature ratings (contact factory)
  • See Matrix for standard options

Application Notes:

  • Saturated Steam Service: See Ratings charts or contact factory
  • Potable Water: Carbon Steel wetted materials are not suitable for potable water, 316SS chambers are suitable
  • Vacuum Service: Suitable
  • Gaseous Service: Not acceptable
  • Compatibility: Before ordering, verify all materials are compatible with the service media(s), intermittently used cleaners, the environment, and cleaning processes in conjunction with the temperatures and pressures of the application(s) and future applications. Ernst Instruments does not make chemical compatibility recommendations. Compatibility is the responsibility of the user and/or specifying party.

Warning WARNING: This product can expose you to certain chemicals, which are known to the State of California to cause cancer or birth defects or other reproductive harm. For more information go to: www.P65Warnings.ca.gov
 
Replacement Parts

Model Number Matrix
Model Number Matrix