MATERIAL FLEXIBILITY
The ALPHA inlet is compatible with several pipe materials, including ductile iron, cast iron, HDPE and PVC pipe. Meaning it will work with just about any pipe material on the job.
SIGNIFICANTLY REDUCES INSTALLATION TIMES
Compared to mechanical joint, which uses up to eight bolts on each end, the ALPHA joint uses only one top-mounted stainless steel bolt. This makes the valve with ALPHA ends easier to install, which saves time and money.
ACCESSIBILITY
The ALPHA joint is much more accessible than other end connections. Mechanical joints, which require bolts on the bottom of hydrant base, can be harder to install. ALPHA can be quickly and easily installed by one person in a fraction of the time it takes to install a mechanical joint valve. In some instances, the mechanical joint may require more than one person install.
PREASSEMBLED
Unlike the mechanical joint, ALPHA comes with the restraint accessories attached. Another money and time saver.
EASIER TO INSTALL
ALPHA also works with the pressure to achieve restraint. This reduces the amount of torque needed to achieve a solid connection.
ALPHA™ is a trademark of Romac Industries, Inc (U.S. Patent 8,894,100)
AMERICAN FLOW CONTROL 4-½” American-Darling Mark 73-5 FIRE HYDRANT SPECIFICATIONS AWWA C502 and UL / FM 250 PSIG
SAMPLE SPECIFICATION FOR MUNICIPAL FIRE HYDRANTS WITH ALPHA™ ENDS
A: HYDRANT CONSTRUCTION
Fire Hydrants shall meet or exceed ANSI/AWWA C502, latest revision for use in water supply systems.
Rated working pressure shall be 250 psig, test pressure shall be 500 psig.
Hydrants shall be dry-barrel construction closing with and opening against the inlet pressure.
Hydrant main valve closure shall be of the compression type.
Traffic break feature to be designed for easy 360° rotation of nozzle section and incorporate the use of a 2-piece square rod and single cast-iron rod coupling secured with stainless steel coupling pins.
The hydrant shall have a travel stop nut in the top of the hydrant to limit the travel of the hydrant rod. Hydrant designs that allow the valve bottom to stop against the shoe or employ a stop in the drain mechanism resulting in a bending moment in the rod assembly are not allowed.
Hydrant upper and lower barrels and base shall be made of ductile iron.
Hydrant to be Certified to NSF/ANSI/CAN 61 and NSF/ANSI/CAN 372.
B: DRAINAGE SYSTEM
The main valve opening shall not be less than 4-1/2” and be designed so that removal of all working parts can be accomplished without excavating.
The hydrant shall incorporate a draining system constructed entirely of bronze and positively activated by the compression of an e-coated stainless steel spring.
Hydrant drains shall close completely after no more than 3 turns of the operating nut.
There shall be a minimum of two internal drain ports in the hydrant seat and four outlets in the hydrant drain ring directing water to the exterior of the hydrant.
Hydrants employing sliding-style drains are not permitted.
C: HYDRANT BARRELS AND NOZZLES
Hydrant barrels shall be constructed of ductile iron and shall have (1) pumper nozzle and (2) hose nozzles.
The operating nut, all nozzle cap nut dimensions and the nozzle threads shall be in compliance with the standards established by the local authorities.
All pumper and hose nozzles shall be retained by a single-piece threaded ductile iron retaining collar. Threaded-in nozzles and nozzles using set screws or wedge pins are not allowed.
D: HYDRANT COATINGS
Hydrant upper barrel shall be factory coated with an electrodeposition (E-coat) epoxy primer and a catalyzed two-part polyurethane top coat. Base shall be coated with fusion-bonded-epoxy.
All bolting below grade shall be Type 304 stainless steel.
G: CONNECTION
Hydrant inlet shall be designed for use with ductile iron, cast iron, HDPE and PVC pipe materials.
Inlet shall incorporate stab-fit design requiring the use of only one Type 304 stainless steel fastener. The assembly of flange or mechanical joint restrainers using multiple fasteners or wedge bolts is not permitted.
Restraint accessories shall be factory installed.
All hydrant inlets shall be the ALPHA design furnished by AMERICAN Flow Control.
F: FRICTION LOSS
Friction loss not to exceed 3.8 psig at 1000 GPM through the hydrant 4-1/2 in. pumper nozzle.
Hydrants shall be the 4-½” American-Darling Mark 73-5, by AMERICAN Flow Control with ALPHA base.
