Description
Our WM-Series offers features and benefits steel tanks just can’t match. From their corrosion-proof composite construction... to their lighter weight, easier maintenance and less expensive installation… WM-Series pressure tanks are the preferred choice of professionals.
Features and Benefits
- Replaceable air cell assures easier field servicing.
- Greater drawdown than comparably sized steel tanks yields greater efficiency.
- Extended labor warranty option is available to homeowners.
- Won’t rust in corrosive environments, particularly important in coastal regions.
- Quicker and less costly to install, usually requiring only one person and fewer man-hours.
- Wider pressure setting differential provides greater flexibility
Applications
- Residential
- Light Commercial
- Pressure Boosting
Product Diagram
WM Series Performance Data
| Model Number | Capacity | Maximum | Drawdown | Diameter* | Overall Height* | Height* inlet/ | System | Assembly Weight* | Pallet |
| gal / liter | Operating Pressure | 30/50 Setting** | inch / cm | inch / cm | outlet to floor | Connection | lb / kg | QTY. | |
| psi / kPa / Bar | gal / liter | inch / cm | |||||||
| WM-4 / WM0060 | 14.5 / 55 | 125 / 862 / 8.6 | 4.4 / 16.5 | 16 / 41 | 26 / 66 | 1 3/4 / 4.4 | 1" male NPT | 14.5 / 6.6 | 9 |
| WM-6 / WM0075 | 19.8 / 75 | 125 / 862 / 8.6 | 5.9 / 22.5 | 16 / 41 | 32 / 81 | 1 3/4 / 4.4 | 1" male NPT | 17.75 / 8.1 | 9 |
| WM-9 / WM0120 | 29.5 / 112 | 125 / 862 / 8.6 | 8.9 / 33.5 | 16 / 41 | 44 / 112 | 1 3/4 / 4.4 | 1" male NPT | 24.75 /11.2 | 9 |
| WM-11 / WM0130 QC | 35 / 132 | 125 / 862 / 8.6 | 10.6 / 40.1 | 21 / 53 | 33 / 83.8 | 2 1/4 / 5.7 | 1 1/4" male NPT | 32 / 14.5 | 4 |
| WM-12 / WM0150 | 40.3 / 153 | 125 / 862 / 8.6 | 12.1 / 45.8 | 16 / 41 | 57 / 145 | 1 3/4 / 4.4 | 1" male NPT | 30 /13.6 | 9 |
| WM-23 / WM0300 | 79.6 / 301 | 125 / 862 / 8.6 | 23.8 / 90.4 | 21 / 53 | 62 / 157 | 2 1/4 / 5.7 | 1 1/4" male NPT | 65.7 / 29.8 | 4 |
| WM-14WB / WM0180 | 47.1 / 178 | 125 / 862 / 8.6 | 14.1 / 53.5 | 21 / 53 | 41 1/4 / 105 | 2 1/4 / 5.7 | 1 1/4" male NPT | 43 / 19.5 | 4 |
| WM-20WB / WM0235 | 60.0 / 227 | 125 / 862 / 8.6 | 18.0 / 68.1 | 24 / 61 | 41 1/2 / 105 | 2 1/4 / 5.7 | 1 1/4" male NPT | 50 / 22.7 | 4 |
| WM-25WB / WM0330 | 86.7 / 328 | 125 / 862 / 8.6 | 26.0 / 98.5 | 24 / 61 | 55 1/4 / 140 | 2 1/4 / 5.7 | 1 1/4" male NPT | 72.75 / 33.0 | 4 |
| WM-35WB / WM0450 | 119.7 / 453 | 125 / 862 / 8.6 | 35.9 / 135.9 | 24 / 61 | 74 1/4 / 189 | 2 1/4 / 5.7 | 1 1/4" male NPT | 95 / 43.1 | N/A |
Note: Maximum external operating temperature 120°F (49°C). Maximum internal operating temperature 100°F (38°C). Minimum operating temperature 40°F (4°C).
* Diameter, height and weight may vary slightly without notice.
** In keeping with current industry standards, drawdown factors are based on Boyle's law. Actual drawdowns will vary depending upon system variables, including the accuracy and operation of the pressure switch and gauge and operating temperature of the system.