NFPA 1964-1998 Standard for Spray Nozzles (Shutoff and Tip)

NFPA 1964-1998 Standard for Spray Nozzles (Shutoff and Tip). 2-3.7 The nozzle shall be subjected to a pressure of 300 psi (2070 kPa) or 1 1 / 2 times the maximum rated pressure, whichever is higher. After the pressure is removed, all functions — such as pattern selection, flush, discharge adjustments, and shutoff — shall be tested at maximum rated pressure to ensure that they function properly, with not greater than a 25 percent increase in force over the maximum allowed at 100 psi (690 kPa). 2-3.8 Nozzles equipped with a full-time swivel, which allows the nozzle to rotate once the swivel is tightened onto a cou- pling, shall require a minimum force of 10 lbf (44.5 N) to rotate the nozzle when tested in accordance with 4-3.3. 2-3.8.1 If the nozzle is equipped with rotational pattern con- trols as well as a full-time swivel, the force required to rotate the full-time swivel shall be at least 1 lbf (4.5 N) greater than the force required to rotate the pattern control, as outlined in 2-3.6. 2-8 Handholds, Handgrips, and Ladder Hooks. Dual hand- holds, single handgrips, or ladder hooks provided on nozzles shall support a 300-lb (136-kg) nozzle reaction force when tested in accordance with Section 4-11. If more than one fea- ture is provided on the same nozzle, each feature shall be tested separately. Test samples that distort or develop cracks or broken sections shall be considered as having failed to meet the test criteria. 2-9 Markings. 2-9.1 Each nozzle shall be permanently identified with the fol- lowing information using figures and letters not less than 3 / 16 in. (4.8 mm) in height: (a) Name of manufacturer (b) Unique product or model designation (c) All other markings required by this standard 2-9.2 Each spray nozzle shall be marked with the rated pres- sure of the nozzle. 2-9.3 Each spray nozzle shall be marked with the flow rate at positions of straight stream and full spray. Select gallonage nozzles shall be marked to indicate the flow rate at each set- ting. Constant pressure (automatic) nozzles shall be marked with the minimum and maximum discharge as permitted in Section 2-1. 2-9.4 Nozzles equipped with a flush feature shall indicate the flush operating position with the word FLUSH. 2-9.5 Adjustable-pattern nozzles shall be marked to indicate straight stream and spray pattern settings, or arrows shall indi- cate the direction of adjustments...