Welcome to Plastics Machinery, LLC

Open M-F 8am - 5pm EST

Chiller Sizing
2.4 gpm/Ton flow rate 
1 Chiller Ton = (gpm x dT)/24
12,000 btu/hr = 1 chiller ton
Tower Sizing
3 gpm/Ton flow rate (based on 85 F supply, 95 F return, 78 F WB)
1 Tower Ton = (gpm x dT) / 30 
15,000 btu/hr = 1 tower ton  
Ft. head=psi x 2.31
Chiller Sizing for Molding
30 lb/hr HDPE = 1 Ton
35 lb/hr LDPE, PP, or Acrylic = 1 Ton
50 lb/hr PS, ABS, Acetal, PC = 1 Ton
75 lb/hr PVC = 1 Ton
40 lb/hr PET, Nylon, PPO, Urethane = 1 Ton
Chiller Sizing for Profile Extrusion
80 lb/hr PVC or ABS = 1 Ton
75 lb/hr PS = 1 Ton
50 lb/hr HDPE or PP = 1 Ton
Chiller Sizing for Blow Molding
40 lb/hr Polyolefins = 1 Ton
Extruder Cooling
Extruder Barrel Cooling = 1 ton/inch diameter
Extruder Feed Throat (3.5" = 1 Ton, 4.5" to 6" = 2 Tons)
Extruder Gearbox = 1 ton per 100 hp
Misc  Cooling
Hydraulic pump = 0.1 Ton/hp
Air Compressor = 0.1 Ton/hp
Air Compressor  w/aftercooler = 0.2 Ton/hp 
Machine Tools = 0.1 Ton/hp

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Water Pipe Sizing
(Based on 10' HD loss/ 100' pipe)
6 gpm 1/2" pipe
10 gpm 3/4" pipe
15 gpm 1" pipe
40 gpm 1-1/2" pipe
70 gpm 2" pipe
100 gpm 2-1/2" pipe
150 gpm 3" pipe
275 gpm 4" pipe
850 gpm 6" pipe
1500 gpm 8" pipe