NIBCO Technical Services • Phone: 1.888.446.4226 • Fax: 1.888.336.4226
2
1.0 GENERAL INFORMATION
1.1 SCOPE
These instructions are furnished for use in the installation, operation and maintenance of
NIBCO 1/4” to 3” Class 125, 150, 200 and 300 bronze swing check valves, with screwed
in bonnet, as well as, Lead-Free* Performance Bronze
®
swing check valves in potable
water applications.
1.2 GENERAL DATA
A. MANUFACTURER
NIBCO INC.
1516 Middlebury Street
Elkhart, IN 46516
Phone: (574) 295-3000
B. FIGURE NUMBERS AND DESCRIPTIONS
Figure Description
Number (Swing Check Valves)
T-413 Threaded end, screw in bonnet, W – Buna-N disc (no SWP)
Class 125 B – bronze disc, Y – PTFE disc,
LF – Lead-Free* Performance Bronze
®
(15 SWP)
S-413 Threaded end, screw in bonnet, W – Buna-N disc (no SWP)
Class 125 B – bronze disc, Y – PTFE disc,
LF – Lead-Free* Performance Bronze
®
(15 SWP)
T-433 Class 150 threaded end, screw in bonnet,
B – bronze disc, Y – PTFE disc
S-433 Class 150 solder end, screw in bonnet,
B – bronze disc, Y – PTFE disc
T-453 Class 200 threaded end, screw in bonnet,
B – bronze disc, Y – PTFE disc
T-473 Class 300 threaded end, screw in bonnet,
B – bronze disc, Y – PTFE disc
All threaded end preparations of valves meet American National Pipe Thread
(N.P.T.) requirements as per ASME B1.20.1.
All solder end valves meet the requirements of ASME Standard B16.22.
C. IDENTIFICATION PLATES
Identification of the bronze swing check valves is made by checking for the name
NIBCO cast onto the side of the valve body. The steam rating and CWP rating is
a cross reference with the figure number listed above. These valves are directional.
In order for them to function properly, they must be installed with the arrow pointing
with the direction of flow. The arrow for direction of flow is cast onto the side of the
body. In order to determine the type of seat that is used within the valve, it is
necessary to look into its end and determine the seat type. The bronze disc will be
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