The Smith Meter Model E4 is a 4-inch, steel, double-case, straight-through rotary vane positive displacement (PD) meter used for custody transfer, batching, blending, dispensing and inventory control of petroleum products, oils, solvents, chemicals and similar liquids. Smith's offset inlet and outlet nozzles keep pressure drop across the measuring chamber low, which minimizes slippage and preserves accuracy, and a high-torque calibrator adjusts registration in 0.05% steps. The E4 uses 4-inch ANSI flanges on a meter sized for 3-inch flow rates, for systems piped in 4-inch to limit pressure loss.
Key specifications
Size: 4 in, ANSI B16.5 raised-face flanges
Max flow, standard trim: 420 USGPM (1,600 L/min) continuous; 600 USGPM (2,250 L/min) extended intermittent rating (clean refined products)
Max flow, all-iron / LPG trim: 315 USGPM (1,200 L/min)
Linearity: ±0.15% typical over the rated range (minimum flow depends on viscosity)
Repeatability: ±0.02%
Pressure ratings (at 100 °F): E4-S3 Class 150 (285 psi)
Viscosity: 400 mPa·s standard; to 2 Pa·s with high-viscosity clearances
Temperature: -20 to 150 °F standard clearances; to 200 °F high-temp; to 400 °F all-iron trim (seal dependent)
Meter gearing: 1 barrel per calibrator revolution standard (other units on request)
Materials: Steel housing; iron, steel, stainless and aluminum internals (standard trim); Buna-N, FKM (Viton) or PTFE seals; LPG and all-iron trims
Options: High-viscosity and high-temperature clearances, NACE MR0175 construction; strainer, air eliminator, valves, counters, printers, pulse transmitters and ATC/ATG accessories
How to specify / order
The E4 bulletin gives a model designation and ordering checklist rather than a position-by-position catalog code. Provide the following with your RFQ:
Model designation: E4-S#, where S# is the pressure rating: E4-S3 = Class 150, 285 psi
Application: Batching, loading, blending, inventory, custody transfer, process control
Operating conditions: Liquid name and gravity; minimum/normal/maximum flow, temperature and viscosity; maximum working pressure
Seals: Buna-N (standard), FKM/Viton or PTFE
Units of registration: Gallons, barrels, liters, dekaliters, cubic meters, pounds, kilograms
Direction of flow: Left-to-right standard; specify right-to-left if required
Options / accessories: Trim, clearances, counters, pulse transmitters, ATC/ATG, strainer, air eliminator, valves
Pricing and lead time are quoted per configuration. Send the model code (or the details above), product, flow range, and pressure/temperature to Flow Measurement Services for a quote. Specifications summarized from Smith Meter bulletin SS01011; confirm current data with the factory before ordering.
Smith Meter (formerly FMC Technologies / TechnipFMC Measurement Solutions), now manufactured by Guidant. Flow Measurement Services supplies and services Smith Meter equipment.