MIL-S-4953C(USAF)
3.15.2.1 Threads shall conform to Handbook H28. The relief valve on the spray gun shall be adjustable to obtain the specified preoiling delivery pressures.
3.16 Delivery hoses. Two hoses, in accordance with MIL-H-8794, shall be provided for circulating and spraying the corrosion compound. The hoses shall be 3/8 inch inside diameter and 35 feet in length. The fittings shall be as specified on Drawing 52K6050.
3.16.1 Hose and cable reel. A reel shall be provided with swivel fittings and an electrical take off to accommodate the two 35 foot hoses and one 35 foot cable specified in 3.14.5.4. The reel shall be equipped with a travel lock and shall operate manually to wind and unwind.
3.17 Hourmeter. The spray outfit shall be provided with an elapsed time indicator suitably adapted to ll0V, 60 cycle AC. The hourmeter shall be of the counter type mounted on the spray outfit and displaying operating hours in 1 hour increments. The hourmeter shall record pump operating time.
3.18 Gages. The spray outfit shall be equipped with the necessary pressure relief valves, line- pressure gages, temperature gages, shut-off valves on the outlet and return lines, and drain valves required for safe and satisfactory operation of the unit. The pumping system shall be provided with inlet and outlet pressure gages. All gages shall have a range of 200 percent of the normal designed operating pressure. Unless otherwise prohibitive due to function or operation, the gages shall be located on the instrument panel.
3.19 Safety devices. The spray outfit shall be provided with all safety devices common to equipment of this type, including safety pressure relief valves, throttle valves, thermostats, blow off drain valves, and electrica1 overload protective devices. The pressure valves shall be piped for return of the compound into the storage tanks.
3.20 Interchangeability. All parts having the same manufacturer's part number shall be functionally and dimensionally interchangeable. The drawing number requirements of MIL-D-10 00 shall govern changes in manufacturer's part number.
3.21 Electromagnetic. The spray outfit shall be shielded against electromagnetic interference in such a manner that the interference will not exceed the limits specified in series 1001, MIL-STD-
826 for class of equipment T (Electrical Tools and Similar Equipment). Test methods in the 5000 series and 6000 series are not applicable.
3.22 Noise level. The noise level of the spray outfit shall not exceed the limits specified herein for various frequency bands when measured approximately 5 feet above ground level at a
distance of not more than fifteen feet from the unit at 90 degree intervals around the unit and also at the operator's panel and under all operating conditions. Maximum allowable noise level limits shall be:
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