NIBCO Check Valve Bronze Swing - Manual (Page 7)

NIBCO Technical Services • Phone: 1.888.446.4224 • Fax: 1.888.336.4224
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5.0 MAINTENANCE
5.1 TOOLS AND EQUIPMENT
Standard wrenches and tools are suitable for servicing valves as follows:
A. For removing bonnet, an open end wrench of the proper size to fit the bonnet nut is
required. Small wrenches are also required of the socket type to remove the side
plugs. Needle nose pliers are recommended to pull the hinge pin out of the side of
the valve body.
B. Flat plate glass with 400 grit sandpaper to policy disc or bonnet sealing surface of
body. Machinist blueing should be used to test for high spots on body seats and disc.
6.0 SPARE PARTS
Normal spare parts to be maintained on hand are listed on the NIBCO spare parts list.
If the bonnet or body are damaged it is normally less expensive to remove the entire
valve from the line and install a new one.
When placing an order for spare parts, it is necessary to give the size, the valve figure
number found on the aluminum identification plate and also the serial letter which is cast
into the valve body on its side. This will be an alphabetical letter, A, B, C, D, etc. It is vital
to give the serial letter because over a period of time the valve designs have had
modifications which could render the parts useless if they are of a different letter series.
7.0 MAJOR REPAIRS
For other repairs or replacements not covered in the above description, contact the
Technical Services Department of NIBCO INC. for special instructions. Always give the
figure number and size shown on the identification plate affixed to the valve along with
the general serial letter.
For any technical enquiries please call NIBCO Technical Services.