The Provable Zero-LeakageDouble Block & Bleed, plug valve with retracting seals
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Liquid fuels that move through pipeline manifolds are reliably segregated by provabe, zero-leakage,TruSeal valves.
Every TruSeal valve in the manifold has assured double block and bleed shut-off that proves total isolation of each product.
By using TruSeal valves, gasoline,diesel,kerosene,jet fuel,heating oil and LPG as well as crude oil and natural gas are protected from contamination.
Meter Stations
Flow meters require calibration to verify their accuracy.
During meter calibration(proving), every dosed valve in the meter system must seal drop tight.
Even a small leak will cause errors in the meter calibration.
The correct meter factor will persist until the next proving operation and incorrect flow measurement can cost huge sums of money!