TCS 682 Piston Meters

The TCS 682 reciprocating piston flow meter combines outstanding accuracy (0.1% of flow rate) with one of the widest turndown ratios in the industry (250:1). The TCS 682 reciprocating piston flow meter has a rugged industrial design that is tolerant of changing viscosities, temperatures, and liquids with suspensions and solids.

This proven design has over 80 years of unmatched performance and continues to provide the very best in flow measurement, backed by our industry-leading 10 YEAR WARRANTY (5 YEAR WARRANTY – LPG)!

The TCS 682 series flow meter is a true positive displacement meter that has a unique inline design consisting of three reciprocating pistons operating within their respective measuring chambers. Each piston works in a manner similar to an automobile engine. The pistons are fitted to a wobble plate, which has a shaft extending from its upper surface and a valve pivot attached beneath it.

The valve pivot drives a sliding valve from the piston to piston as a known amount of product flows through each cylindrical bore, controlling the sequence of events in a smooth mechanical motion. This smooth mechanical motion is then transferred through the driveshaft to the register.

Specification

  • Flow Range: 0.2 to 50 GPM (0.76 to 189 LPM); 250:1 Turndown Ratio
  • Linear Accuracy: Capable of +/- 0.1% over flow range
  • Repeatability: Capable of 0.01%
  • Operating Pressure: 150 PSI (10.5 BAR)
  • Temperature Range: – 40 to 160°F (- 40 to 71°C)
  • Viscosity Range: Will accurately measure liquids up to 50,000 SSU (11,000 CPS)
  • Connections: 1-1/2″ NPT Companion Flanges are standard, 1″ & 2″ NPT optional. BSPT, Slip Weld, and ANSI flanges are available upon request.
  • Types: SP, SPA, SPD, AF, SS, SSD, & LP
  • Material: Aluminum, Ductile Iron, or Stainless Steel

Meter Types

682 SP – Standard Petroleum

Materials of Construction: Anodized Aluminum, Stainless Steel, Steel, FKM.The 1.5″ 682 SP piston flow meter is designed to meter petroleum products such as gasoline, fuel oils, diesel, bio-diesel, kerosene, vegetable oils, soy oil, motor oils, ethylene glycol (anti-freeze), etc. 

682 SPA – Standard Petroleum Aviation

Materials of Construction: Anodized Aluminum, Stainless Steel, Ni-Resist, FKM.The 1.5″ 682 SPA piston flow meter is designed to meter aviation gasoline, gasoline, jet fuels, fuel oils, diesel, bio-diesel, kerosene, and naptha.

682 SPD – Standard Petroleum Ductile Nodular Iron

Materials of Construction: Ductile Iron, Stainless Steel, Steel, Simriz*, PTFE.The 1.5″ 682 SPD piston flow meter is designed to meter refined petroleum products such as aviation gasoline, ethanol blends, methanol blends, gasoline, fuel oils, diesel, bio-diesel, kerosene, vegetable oils, soy oil, etc.

682 AF – All Ferrous

Materials of Construction: Ductile Iron, Stainless Steel, Steel, Simriz*, PTFE.The 1.5″ 682 AF piston flow meter is designed to meter industrial chemicals, solvents, pesticides, fertilizer, chlorinated solvents, paints, inks, alcohols, molasses, corn syrup, and more.

682 SS – Stainless Steel

Materials of Construction: Stainless Steel, Ceramic, Simriz*, PTFE.The 1.5″ 682 SS piston flow meter is designed to meter industrial chemicals, solvents, pesticides, fertilizer, chlorinated solvents, paints, inks, alcohols, molasses, corn syrup, and more.

682 SSD – Stainless Steel DEF

Materials of Construction: Stainless Steel, Ceramic, EPDM.The 1.5″ 682 SSD piston flow meter is designed to meter diesel exhaust fluid (DEF), AdBlue, AUS 32, and ARLA 32.

682 LP – Liquefied Petroleum Gas

Materials of Construction: Ductile Iron, Stainless Steel, Ceramic, Ni-Resist, Buna.The 1.5″ 682 LP piston flow meter is designed to meter liquefied petroleum gas (LP/LPG) and NH3.

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