Liquid-controls Mechanical Eliminators Manual do Utilizador descarregar pdf (Página 15)

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Most Liquid Controls mechanical air and vapor

eliminators are shipped from the factory as part of a

complete meter system.These air eliminators will arrive

bolted to the top of a strainer on the inlet side of the

meter.

Before the meter system can be put in operation, the

vent ports of the air or vapor eliminator must be piped to

a storage tank and/or a valve.

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Before operation, air eliminators must be piped to a

storage tank. Air eliminators require a receptacle where

the eliminated air or vapor can be safely contained. The

type of receptacle will vary according to application.

Ensure that your receptacle is safe and appropriate for

the intended product and its surroundings.

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In the case of meter systems for LPG applications,

differential valves are often piped to the mechanical

vapor eliminator in the Liquid Controls factory before

shipment, but for other meter systems, the air eliminator

will have to be piped in the eld.

Bulk Plant Meter System

Truck Meter System

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All internal pressure must be relieved to zero pressure before disassembly or inspection of the strainer, vapor eliminator, any

valves in the system, the packing gland, and the front or rear covers.

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6. Slowly crack the tting on top of the differential valve to

relieve product pressure in the system. Product will drain

from the meter system.

7. As product is bleeding from the differential valve, slowly

reopen and close the valve/nozzle on the discharge line.

Repeat this step until the product stops draining from the

differential valve and discharge line valve/nozzle.

8. Leave the discharge line valve/nozzle open while working

on the system.

1. Close the belly valve of the supply tank.

2. Close the valve on the vapor return line.

3. Close the manual valve in the supply line on the inlet

side of the meter. If no manual valve exists on the inlet

side, consult the truck manufacturer for procedures to

depressurize the system.

4. Slowly open the valve/nozzle at the end of the supply

line.

5. After product has bled off, close the valve/nozzle at the

end of the supply line.

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In this manual, the term “,” refers to any

type of receptacle meant to hold air or vapor expelled

by an air or vapor eliminator such as supply tanks,

spewage tanks, catch vessels, spit receptacles, etc.

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