Commercial Heavy Duty Water Softening System with High Molecular Weight (HM) Plastic Valve Models PA071, PA101, PA131, PA191, PA251, and PA321
| MODEL | PA071 | PA101 | PA131 | PA191 | PA251 | PA321 |
| Grains Capacity** @ 4 lbs./cu.ft. Salt Dosage* | 37,000 | 54,000 | 72,000 | 108,000 | 144,000 | 180,000 |
| Grains Capacity** @ 6 lbs./cu.ft. Salt Dosage* | 50,000 | 72,000 | 96,000 | 144,000 | 192,000 | 240,000 |
| Grains Capacity** @ 8 lbs./cu.ft. Salt Dosage* | 61,000 | 84,000 | 112,000 | 168,000 | 224,000 | 280,000 |
| Grains Capacity** @ 10 lbs./cu.ft. Salt Dosage* | 67,000 | 93,000 | 124,000 | 186,000 | 248,000 | 310,000 |
| Grains Capacity** @ 12 lbs./cu.ft. Salt Dosage* | 71,000 | 99,000 | 132,000 | 198,000 | 264,000 | 330,000 |
| Resin Tank Size Inches | 12.3 x 55 | 17.6 x 59.5 | 17.6 x 59.5 | 24 x 76 | 24 x 76 | 24 x 76 |
| Resin Quantity Cubic Feet | 2 | 3 | 4 | 6 | 8 | 10 |
| Connecting Pipe Size and Optional Adapters *** Inches | 1 1.5 | 1 1.5 | 1 1.5 | 1 1.5 | 1 1.5 | 1 1.5 |
| Salt Tank Capacity Lbs. | 340 | 1,000 | 1,000 | 1,500 | 1,500 | 1,500 |
| Operating Pressure PSI | 30-125 | 30-125 | 30-125 | 30-125 | 30-125 | 30-125 |
| Operating Temperature °F | 35-100 | 35-100 | 35-100 | 35-100 | 35-100 | 35-100 |
| Operating Ambient Temperature Range | 35-150 | 35-150 | 35-150 | 35-150 | 35-150 | 35-150 |
| Maximum Drain Flow Grains Per Minute | 3 | 7 | 7 | 10 | 10 | 10 |
| Recharge Water Use Gallons | 108 | 166 | 180 | 286 | 293 | 302 |
| Maximum Clear Water Iron Parts Per Million | 5 | 5 | 5 | 5 | 5 | 5 |
| Electrical Rating | 24V/60Hz | 24V/60Hz | 24V/60Hz | 24V/60Hz | 24V/60Hz | 24V/60Hz |