Amico Medical Gas Check Valve with Extensions - Manual (Page 3)

Valve Installation
1. Remove check valve from packaging and inspect for any shipping damage or loose fasteners.
All fasteners have been set with Loctite®. If damaged in shipping, save original box and box
contents.
2. If check valve is to be painted or insulated, record the valve data on the valve identification tag.
3. If valves are being stored, they should be in a weather-protected area, preferably indoors.
4. Open and close the discs of your valve a few times by hand to assure freedom of movement.
5. The flow arrow on your valve indicates the direction of flow upon installation.
6. Use only a strap type wrench for installation to prevent distortion of the valve body.
7. If this valve is installed in a horizontal line, make sure the screws protruding through the top
and bottom of the valve body are in the vertical position. Maintain at least 6 pipe diameters
of straight length of piping between the check valve and any other line restriction, i.e. elbows,
tees, valves, etc.
8. If the valve installation is in a vertical line with upward flow, the position of the wing support
is not important. There should be at least 6 pipe diameters of straight unrestricted piping
upstream and downstream of the check valve. If space conditions do not allow for this, the
valve must be installed so that the flow is equally distributed across the two valve discs
(see figure A).
9. Before brazing, make sure that all brazing surfaces are free of dirt, oil and grease. Apply and
wrap wet rags around the tube extensions next to the check valve. In addition to wet ragging,
Amico recommends to use a heat sink (such as cool blue oxygen compatible) during the
brazing process. Applying the heat sink will prevent possible damage to the check valve seal
and spring.
10. Connect copper tubing to the check valve extensions using brazing materials and methods in
accordance with NFPA 99 or CSA Standards.
11. Once the check valve extensions are cool, remove the rags.
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