A-A-52030
diameter round wire. The strainer and spout shall be capable of being inserted in, or removed from, the nozzle assembly by hand without the use of any tool. The nozzle spout and strainer shall be securely mounted to the nozzle to prevent any movement of the strainer or spout when assembled.
Control. For hand control, type I nozzles, hold-open notches, lugs, or lever supports shall not be permitted on the operating lever guard. The type II nozzle shall have a fluorosilicone-coated nylon or “Buna-N” coated fabric diaphragm. When the diaphragm is covered by an externally exposed around the outside perimeter of the cap and body mating surfaces. Metal or plastic parts coming in contact with the diaphragm shall have no sharp edges or projections which might affect proper seating, and no sharp edges or burrs which might abrade the diaphragm. Unless otherwise specified, the type III control shall be hand or diaphragm controlled.
Operating-lever guard. When specified, the nozzles shall have a lever and a guard designed to allow for operation using an arctic mitten as shown in figure 1. With the valve in the closed position, the clearances shall be as shown in figure 1. The guard shall protect the lever and valve-operating parts from damage. The guard of size 1 nozzles shall have a 0.375-inch x 1.50-inch minimum slot. The slot shall be located in proximity to the guard to accommodate the standard locking fixture in fuel service pumps.
Anodizing finish. All aluminum and aluminum alloy components of the type I and type 11 nozzles shall be treated electrolytically in a bath containing sulfuric acid to produce a uniform anodic coating on the metal surfaces. The minimum nominal thickness shall be 0.0007 inch. The anodic coating of visible components shall be dyed with specified color. Unless otherwise specified, the type III nozzle shall not be anodized.
Nozzle capacity. The size 1 nozzle shall have a maximum inlet pressure of 15 psi and a flow capacity of not Less than 12 gpm. The size 2 nozzle shall have a maximum inlet pressure of 15 psi and a flow capacity of not less than 40 gpm. The size 3 nozzle shall have a maximum inlet pressure of 10.2 psi and a flow capacity of not Less than 136 gpm.
Environmental. The type I, type II and III nozzles shall perform as specified herein at any ambient temperature from -65, ± 5°F to 145, ± 5°F.
Safety. Except as specified herein, the nozzles shall conform to the assembly and design requirements of UL 842. The type III nozzle shall bear the listing mark of the Underwriters’ Laboratories, Inc., as evidence that the nozzle to which it is attached has been produced under the listing and follow-up services of the Underwriters’ Laboratories. The contractor shall certify that the nozzles comply with all applicable Federal Safety requirements.
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