Table 4 Bearing Selection

Hybrid Ceramic Ball bearing Hard Carbon Composite Sleeve Tungsten Carbide Sleeve Temperature Range: -450°F to +550°F (-268°C to +288°C) -50°F to +500°F (-45°C to +260°C) -450°F to +850°F (-268°C to +454°C) Requires Lubricating Liquid? No No Recommended* Use in “3A” Sanitary Series? No Yes Yes Use in Dirty/Abrasive Service? No Moderate Best Use in Viscous Service? Yes No Only if Abrasive General Corrosion Resistance: Good Best Poor Extended Flow Range Service? Best Fair-Lubricity Dependent Fair-Lubricity Dependent Note: Temperature range of meter will also be limited by coil temperature range. See Table 8 on page 6.

Bearing Selection: A specific bearing type is selected first on chemical compatibility with the flowing liquid. Other considerations include lubricity of the liquid, operating temperature of the liquid, presence of any solids in the liquid, whether the meter will be sitting stagnant or drained with a potentially corrosive liquid or atmosphere in the meter, viscosity and desired operating flow range. The Hoffer factory will confirm any bearing selection for a specific application. Refer to Table 4 as a guideline for bearing options excluding the standard Teflon® bearing used with the Teflon® Series meter.

*

Tungsten carbide sleeve bearings are used on non-lubricated applications primarily for oilfield service applications such as sand and cement slurries.

Table 5 Pressure Rating for the NPT Series Table 6 Pressure Rating for the MS Flared Series

Meter Size End Fitting Size Face/Face Length Working Pressure Meter Size MS(37°) Flared End Fittings Face/Face Length Working Pressure inches cm PSIG BARG inches cm PSIG BARG 1/4" 1/2" 2.45 6.22 6000 413.7 3/8" 1/2" 2.45 6.22 6000 413.7 1/4" MS33656-8 2.45 6.22 5000 344.75 3/8" MS33656-8 2.45 6.22 5000 344.75 1/2" 1/2" 2.45 6.22 6000 413.7 5/8" 3/4" 2.75 6.99 6000 413.7 1/2" MS33656-8 2.45 6.22 5000 344.75 5/8" MS33656-10 2.75 6.99 5000 344.75 3/4" 3/4" 3.25 8.26 4400 303.38 1" 1" 3.50 8.89 3850 265.45 3/4" MS33656-12 3.25 8.26 4400 303.38 1" MS33656-16 3.50 8.89 4300 296.48 1¼" 1¼" 3.875 9.84 3850 265.45 1½" 1½" 4.375 11.11 3500 241.32 1¼" MS33656-20 3.88 9.84 3600 248.22 1½" MS33656-24 4.38 11.11 3600 248.22 2" 2" 4.75 12.06 3000 206.85 2½" 2½" 6.062 15.40 1100 75.84 2" MS33656-32 4.75 12.06 1800 124.11 3" 3" 7.50 19.05 1500 103.42 4" 4" 10.00 25.4 1500 103.42

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