Refer to Tank Chart

Minimum Pipe Volume For PCL-300 milliliters protecting a fryer, work, or range (Example system pipe volume is 1781 milliliters, therefore, OK)

Maximum Pipe Volume For PCL-300 milliliters is 1910 milliliters (Example system pipe volume is 1781 milliliters, therefore, OK)

Maximum Volume Allowed Between First and Last Nozzle for PCL-300 is 1125 milliliters (Example system, the amount of 3/8 in. piping between G and L, is 25.5 feet. 25.5 ft. x 37.5 mls./ft. = 956.3 ml, therefore, OK)

Refer to General Piping Requirements

1. Split piping and straight piping are both allowed on PCL-300 and PCL-460 systems. (Example system OK)
2. PCL-600 systems must use split piping only, with no nozzle located before the split, and with a maximum of 14 flow points per side. 1/2 in. minimum piping must be used up to the first split. (Example system N/A).
3. Maximum Volume for 1/4 in. pipe between a nozzle and the preceding tee is 410 mls. (Example system N/A)
4. Maximum flow numbers for 1.4 in. pipe is 6. (Example system N/A)
5. Maximum number of elbows between a nozzle and the preceding tee is 5. (Example system has a maximum number of 2, therefore, OK)
6. Maximum of 25 elbows are allowed in the total piping system. (Example system has 11 elbows, therefore, OK)
7. Maximum difference in elevation between the tank outlet and any nozzle, or the tank outlet and the highest or lowest horizontal pipe run, is 10 ft. (3.1 m) (Example system has 5'-6" (1.7 m), therefore OK).
8. No traps are allowed in the piping network. (example system has no traps, therefore, OK).
9.  Pipe lengths are measured from center to center fittings. (Example system pipe lengths were measured from center to center of fittings, therefore, OK)
10. The internal equivalent length volume of fittings does not have to be considered as part of the total pipe volume. (Example system OK)
11. When utilizing different size pipe in the total system, the largest size must start first and the additional pipe must decrease as it approaches the nozzle. (Example system N/A).
12.Elbow(s) or swivel adaptors located at the nozzles do not have to be counted in the 25 elbow maximum requirement. (Example system OK)
13. Additional piping requirements when protecting a range, work, or fryer:

• PCL-300 - Minimum of 300 ml and four (4) flow numbers in total system. Of that minimum, 239 ml and two (2) flow numbers must be utilized at or before the range, work, or fryer. (Example system has 1781 ml and 10 flow numbers, therefore, OK. The example system has 1050 ml and 3 flows including the fryer, therefore, OK)
• PCL-460 - Minimum of 660 ml and ten (10) flow numbers required in total system. Of that minimum, 180 ml and two (2) flow numbers must be utilized at or before the range, work, or fryer.
• PCL-600 - Minimum of 960 ml and fourteen (14) flow numbers required in total system. Of that minimum, 120 ml and 2 flow numbers must be utilized at or before the range, work, or fryer.