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Repair Kits Available By Part Number Section 2 Page - GAMECO

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WARNING: Installation, usage and maintenance of this product must<br />

be in compliance with all Engineered Controls International, Inc.<br />

instructions as well as requirements and provisions of NFPA #54, NFPA<br />

#58, DOT, ANSI, all applicable federal, state, provincial and local<br />

standards, codes, regulations and laws.<br />

Inspection and maintenance on a periodic basis is essential. Installation<br />

and maintenance should be performed only by qualified personnel.<br />

Be sure all instructions are read and understood before<br />

installation, operation, and maintenance. These instructions must be<br />

passed along to the end user of the product.<br />

CAUTION: Contact or inhalation of liquid propane, ammonia and their<br />

vapors can cause serious injury or death! NH3 and LP-Gas must be<br />

released outdoors in air currents that will insure<br />

dispersion to prevent exposure to people and livestock. LP-Gas must<br />

be kept far enough from any open flame or other source of ignition to<br />

prevent fire or explosion! LP-Gas is heavier than air and will not<br />

disperse or evaporate rapidly if released in still air.<br />

CAUTION: Wear approved protective gloves and eye protection when<br />

working with Chek-Loks ® . Do not vent LP-Gas near possible sources<br />

of ignition.<br />

7590U-20 Application<br />

The 7590U-20 Liquid Evacuation Adapter is for use with RegO ® 7590U and<br />

7591U Chek-Lok ® Actuated Liquid Withdrawal Excess Flow Valves. It is<br />

designed to provide a simple means of evacuating a container equipped<br />

with a RegO ® 7590U and 7591U Chek-Lok ® Valve. The Adapter’s operating<br />

handle opens and closes the equalizing stem in the Chek-Lok ® Valve.<br />

The 7590U-20 Adapter eliminates gas flow through the Chek-Lok ® Valve<br />

during installation or removal of the adapter. This Adapter allows for the<br />

proper connection and opening of the check mechanism.<br />

7590U-20 Features<br />

• Built in nylon gasket provides a gas tight seal.<br />

• Installed without depressing the equalizing stem of the<br />

Chek-Lok ® .<br />

• Eliminates gas flow through Chek-Lok ® Valve during installation or<br />

removal of the Adapter.<br />

• Eliminates need to slug excess flow feature of Chek-Lok ® when removing<br />

the Adapter.<br />

• Built in bleeder valve allows controlled discharge of<br />

liquid before removing the Adapter.<br />

Operation Instructions for the 7590U-20<br />

NOTE: Use of an appropriate 3 /4" shut-off valve with<br />

the 7590U-20 Adapter is recommended. The shut-off<br />

valve should be installed between the outlet of the<br />

Adapter and the unloading hose.<br />

Unloading operations should be performed only by<br />

thoroughly trained and qualified personnel.<br />

Opening 7590U or 7591U Chek-Lok ® with the<br />

7590U-20 Adapter<br />

NOTE: Use a suitable wrench when removing the cap<br />

and Adapter from the Chek-Lok ® . Do not allow the<br />

Chek-Lok ® to un-thread from the tank during removal.<br />

When necessary, use a second wrench to secure the<br />

Chek-Lok ® in position.<br />

1. Loosen the 7590U-5 cap to vent any accumulated<br />

LP-Gas from the Chek-Lok ® . After venting stops,<br />

remove the cap.<br />

If venting does not stop, retighten the cap and use<br />

other approved means to withdraw liquid from the<br />

container.<br />

2. Move the lever of the 7590U-20 Adapter to the<br />

UP & CLOSED position.<br />

3. Completely thread the 7590U-20 Adapter onto the<br />

Chek-Lok ® by turning Adapter’s coupling nut clockwise<br />

with a suitable wrench. Do not over tighten.<br />

7590U-20<br />

Chek-Lok ® Liquid<br />

Evacuation Adapter<br />

Outlet<br />

3<br />

/4"<br />

F. NPT<br />

Thread<br />

Coupling<br />

Nut<br />

8594-1A<br />

Gasket<br />

7590U-20 Chek-Lok ® Liquid<br />

Evacuation Adapter<br />

For 7590U and 7591U<br />

Chek-Lok ® Valves Only<br />

CAUTION: DO NOT move lever until instructed. Turning lever will result in<br />

the discharge of liquid propane.<br />

4. Connect an unloading hose to the outlet of the Adapter or to the Adapter<br />

and shut-off valve assembly installed onto Chek-Lok ® Valve.<br />

5. Close the shut-off valve at the tank end of unloading hose. If a shut-off<br />

valve is connected to the outlet of the Adapter, also close this valve.<br />

6. Turn lever to DOWN & OPEN position. This allows flow through Adapter.<br />

WARNING: If the lever does not completely reach the full DOWN & OPEN<br />

position, the equalizing stem may have already been fully opened. Do<br />

not force the lever down further. Forcing the lever will damage the<br />

equalizing stem and seat assembly. This could prevent proper contact<br />

between the seat assembly and the seat when closing the Adapter –<br />

resulting in leaks and the free flow of liquid or vapor through the Adapter.<br />

7. Equalize pressure in the Adapter and Chek-Lok ® . This allows the excess<br />

flow check mechanism in the Chek-Lok ® Valve to open – necessary for<br />

evacuation.<br />

• To equalize pressure when a 3 /4" shut-off valve is connected to the<br />

Outlet of Adapter:<br />

Be sure shut-off valves at adapter outlet and tank are closed. It<br />

should take approximately 20 to 30 seconds to equalize pressure.<br />

After pressure is equalized, slowly open the 3 /4" shut-off valve at the<br />

adapter outlet to pressurize the unloading hose.<br />

• To equalize pressure when a 3 /4" shut-off valve is not connected to the<br />

Outlet of Adapter:<br />

Be sure the shut-off valve at the tank is closed. It may take several<br />

minutes to equalize pressure between the Chek-Lok ® and the<br />

unloading hose.<br />

8. Evacuate the container.<br />

Inlet<br />

1 5 /8" x 12 F. UN<br />

Thread<br />

Lever in<br />

UP & CLOSED<br />

Position<br />

Lever in<br />

DOWN & OPEN<br />

Position<br />

Connecting the Adapter<br />

Vent Valve<br />

7590U-20<br />

Adapter<br />

7590U or<br />

7591U<br />

Chek-Lok

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