Pressures from 8-150 psi (350 optional).
LMI back pressure valves prevent siphoning and varying rates of dosage from fluctuating downstream pressure by enacting positive discharge pressure in your metering pump system.
Inside the valve is a diaphragm held in place by a spring, which is pressure set. When the pressure exceeds the PTFE diaphragm is pushed up, and material flows through the valve to the injection point. The valves are set at 50psi but are easily adjusted in the field.
| Model Number | Mfg. | Description | Connection Size/Type | Material | Price |
|---|---|---|---|---|---|
| 35637 | LMI | Back Pressure Valve | 1/4" NPT | PVC | $408.00 |
| 35638 | LMI | Back Pressure Valve | 1/4" NPT | Polypropylene | $0.00 |
| 35846 | LMI | Back Pressure Valve | 1/4" NPT | PVDF | $0.00 |
| 35847 | LMI | Back Pressure Valve | 1/4" NPT | Stainless Steel | $0.00 |
| 35641 | LMI | Back Pressure Valve | 1/2" NPT | PVC | $341.00 |
| 35642 | LMI | Back Pressure Valve | 1/2" NPT | Polypropylene | $0.00 |
| 35850 | LMI | Back Pressure Valve | 1/2" NPT | PVDF | $0.00 |
| 35851 | LMI | Back Pressure Valve | 1/2" NPT | Stainless Steel | $1258.00 |
| 35856 | LMI | Back Pressure Valve | 1" NPT | PVC | $0.00 |
| 35857 | LMI | Back Pressure Valve | 1" NPT | Polypropylene | $0.00 |
| 35858 | LMI | Back Pressure Valve | 1" NPT | PVDF | $0.00 |
| 35859 | LMI | Back Pressure Valve | 1" NPT | Stainless Steel | $1837.00 |