607 SE EVERETT MALL WAY MIS ANTOJITOS 2025-09-10

A EVE TT EVERETT .....o, r Chapter 3-System Design Everett Fire Dept.Permit Review Status:Approved Reviewed By:KBrown PIPING LIMITATIONS 09/06/2023 10:06:55 AM Once the nozzle placement and quantity of cylinders has been GENERAL PIPING REQUIREMENTS determined,it is necessary to determine the piping configurations 1. Split piping and straight piping are both allowed on between the cylinders and the nozzles.This section contains the P P P d g P P g guidelines and limitations for designing the distribution piping so L1600,L3000 and L4600 systems. that the extinguishing agent will discharge from the nozzles at a 2. L6000 systems must use split piping only,with no proper flow rate.These limitations must also be referred to when nozzle located before the split,and with a maximum of 14 selecting the mounting location for the cylinders. flow points per side.W minimum piping must be used up to the first split. The maximum pipe lengths are based on internal pipe volume. 3. Maximum volume for V4"pipe between a nozzle Each size cylinder is allowed a minimum and maximum total and the preceding tee is 410 mis. volume of piping,calculated in milliliters. 4. Maximum flow numbers for W pipe is 6. There is no need to distinguish between what portion of the piping 5. Maximum number of elbows between a nozzle and is supply line and what portion is branch line.Only the total the preceding tee is 5. volume of the complete piping network has to be considered. 6. Maximum of 25 elbows are allowed in the total piping system. 7. Maximum difference in elevation between the Volume Chart cylinder outlet and any nozzle is 10'. V4"pipe=20.5 mis./ft. 8. No traps are allowed in the piping network. %"pipe=37.5 mis./ft. 9. Pipe lengths are measured from center to center of %"pipe=59.8 mis./fL fittings. %"pipe=105.0 mis./ft For more Pipe Volume data,see page 59 10. The internal equivalent length volume of fittings does not have to be considered as part of the total pipe Agent Distribution Hose=300 ml/hose volume. 11. When utilizing different size pipe in the system,the CYLINDER CHART largest size must start first and the additional pipe must Maximum Ma:Imam volume decrease as it approaches the nozzle. M.Amum Pipe Allowed Between 12. Elbow(s)or swivel adapters located at the nozzles Flow Volume First Nozzle&Last Cylinder size Numbers (muuuters) Nozzle(milllliters) do not have to be counted in the 25 elbow maximum 1.6 Gallon 5 1500 600 requirement. L1600 13 Reducing bushings are allowed when reducing to a 3.o Gallon to 1910 1125 smaller pipe size. L3000 4 6 Gallon u 3 too 3000 14. Additional piping requirements when protecting a range,wok,or a fryer. L4aoo 4.6 Gallon 15 a600 200° • L1600- Minimum of 239 ml and one(1)flow L4600 numbers required in total system.Of that 6.o Gallon 19 4215 1633/side minimum,180 ml and one(1)flow numbers must L6000 be utilized at or before the range,wok,or fryer 6.o Gallon 20 3465 1313/81de L6000 L3000-Minimum of 300 ml and four(4)flow -All piping,including nozzle drop.,most be loan"In the numbers required in total system.Of that piping calculations minimum,239 ml and two(2)flow numbers must be utilized at or before the range,wok,or fryer. • L4600-Minimum of 660 ml and ten(10)flow MINIMUM PIPE VOLUMES FOR A numbers required in total system.Of that FRYER,RANGE,AND WOK minimum,180 ml and two(2)flow numbers must Cylinder be utilized at or before the range,wok,or fryer. Size Entire System At or before appliance • L6000-Minimum of 960 ml and fourteen(14) L1600 239 ml-1 Flow Pt lao ml-i Flow Pt flow numbers required in total system.Of that L3000 300 MI-4 Flow Pts 239 ml-2 Flow Pis minimum,120 ml and 2 flow numbers must be L4600 "0 ml-10 Flow Pts ido ml-2 Flow Pis utilized at or before the range,wok,or fryer. L6000 960 ml-14 Flow Pis 120 ml-2 Flow Pts 2015-DEC-1,Rev D