NIBCO UL Bronze Gate Valves User Manual
NIBCO Technical Services • Phone: 1.888.446.4224 • Fax: 1.888.336.4224
An aluminum identification plate is attached beneath the handwheel nut. This
identification plate gives the figure number of the valve, some general information
about the trim and location of NIBCO’s corporate offices.
When more detailed information is required, the NIBCO Bronze & Iron or Fire
Protection catalog should be referred to using the valve figure number as the
When installing valves for service in corrosive media, the NIBCO Chemical
Resistance Guide may be consulted for specific data or contact can be made
with NIBCO Technical Services. It is, however, the obligation of the user to make
the ultimate decision of fitness for use.
PRESSURE TEMPERATURE RATINGS
Pressure and temperature ratings may be found in the Engineering section of the
latest printing of NIBCO Bronze & Iron or Fire Protection Catalogs. This
information is taken from applicable ANSI or UL/FMRC Standards.
A valve used under the jurisdiction of the ASME boiler and pressure vessel code,
the ANSI code for pressure piping, government or other regulations, is subject to
any limitation of that code or regulation and to the applicable ANSI Standard.
Valves are pneumatically shell tested and seat tested at a pressure of 80 psi in
accordance with Federal Specifications and MSS SP-80 Manufacturers
Standardization Society Requirements.
Fire Protection valves are tested in accordance with the appropriate Underwriters
Laboratories (UL) and Factory Mutual Research Corp. (FMRC) specifications.
Principal dimensions of the valve are specified in the appropriate catalog.
The gate valves listed above and covered in these instructions are bronze valves made
of ASTM B62 material for Class 125, 150, and 175 WWP valves and from ASTM B61
material for Class 200 and 300 valves.
The valves are operated with the handwheel and are used to start or stop the flow of
fluids in piping systems. Clockwise rotation of the handwheel closes the valve.