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Classification and Size: Hydrants are classified by the main valve size, number and size of hose and pumper nozzles. Hydrant sizes are designated as 4 1⁄2 and 5 1⁄4 inches, size being the inside diameter of the main valve seat opening. Length: Hydrant lengths are determined by depth of trench below ground level.
Proper hydrant installation is an essential component to long service life with minimal maintenance. The following are some key fire hydrant installation, operation and trouble shooting procedures to consider when inspecting new construction.
Today, the M&H Style 929 RELIANT fire hydrant offers this same reliability in providing superior fire protection service. The RELIANT hydrant is engineered to give life-long, maximum performance. Its design features simplify installation and maintenance. It offers trouble-free operation and economy, too.
Fire Hydrant having barrel thread dimensions of 8.250” O.D. x 4 TPI (threads per inch). Seat ring removeable without removing lower barrel. • 4 1/2” M.V.O. hydrants have 5 1/4” bonnets, upper barrels, safety flanges and lower barrels and are marked 5-1/4” even though the main valve opening is 4-1/2”. • 1997 Reversible main valve
Hydrant size is designated as a 5 1⁄4 “, size being the inside diameter of the main valve seat opening. Length: Hydrant lengths are determined by depth of trench below ground level. Lengths are in multiples of six inches. Barrel: Upper section of barrel (nozzle section) contains the hose and pumper nozzles.
Classification and Size: Hydrants are classified by the main valve size, number and size of hose and pumper nozzles. Hydrant sizes are designated as 4 1⁄2 and 5 1⁄4 inches, size being the inside diameter of the main valve seat opening. Length: Hydrant lengths are determined by depth of trench below ground level.
The M&H Style 929 Reliant fire hydrant offers reliability in providing superior fire protection service. The Reliant hydrant is engineered to give life-long, maximum performance. Its design features simplify installation and maintenance.
