682 Piston Flow Meter

DESIGN
The 682 series piston flow meter is a true positive displacement flow meter that has an inline design consisting of three (3) reciprocating pistons operating within their respective measuring chambers, where 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 piston to piston as a known amount of product flows through each cylinder bore, controlling the sequence of events in a smooth mechanical motion. 

FEATURES
•  Superior Accuracy over the entire flow range
•  Low Maintenance
•  Long Service Life
•  75 years of proven performance and acceptance
•  Wide Viscosity Range - up to 50,000 SSU (11,000 CPS)
•  Meets NIST, OIML and many other international weights & measures certifications
•  Industry leading 10 YEAR WARRANTY!

SPECIFICATIONS
Design:                      Reciprocating Three (3) Piston
Size:                           1-1/2" Flange Connection
Type:                          SP, SPA, SPD, AF & SS
Flow Range:             0.2 to 50 GPM (0.76 to 190 LPM)
Linear Accuracy:      Capable of +/- 0.1% over flow range
Repeatability:           0.01% over 250:1 turndown
Pressure:                 150 PSI (10.5 BAR)
Temperature:           - 40 to 160°F (- 40 to 71°C)
Material:                     Aluminum, Ductile Iron & Stainless Steel
Seals:                        Viton®, Teflon® & Simriz®

METER TYPES
SP    Standard Petroleum
Gasoline, Fuel Oils, Diesel, Bio-Diesel, Kerosene, Vegatable oils, Motor Oils, Ethylene Glycol, Naptha etc.

SPA   Standard Petroleum - Aviation
Aviation Gasoline, Gasoline, Jet Fuels, Fuel Oils, Diesel, Bio-Diesel, Kerosene, Naptha, etc.

SPD   Standard Petroleum - Ductile (Nodular) Iron
Ethanol, Methanol, Aviation Gasoline, Gasoline, Diesel, Bio-Diesel, Fuel Oils, Kerosene, Vegatable Oils, Motor Oils, Naptha, etc.

AF     All Ferrous
Industial Chemicals, Solvents, Pesticides, Nitrogen Solutions, Fertilizer, Chlorinated Solvents, Paints, Inks, Alcohols, Adhesives, Molasses, Corn Syrup, etc. 

SS     Stainless Steel
Industrial Chemicals, Solvents, Nitric Acid, Phosphorus Acid, Glacial Acetic Acid, Anti-Icing Fluid, Vinegar, Fruit Juices, etc. 

Ò Teflon is a registered trademark of Dupont Dow Elastomers, L.L.C.
Ò Viton is a registered trademark of E.I. DuPont de Nemours & Co.
Ò Simriz is a registered trademark of Freudenberg-NOK