Geo-Flo manufactures and supplies check valves for flow centers and pump systems. Check valves are used in geothermal and hydronic systems when there are two or more pumps arranged in parallel. For example, when there are two or more geothermal heat pumps in a building and each heat pump has a dedicated flow center or pump(s), each flow center should have a check valve to prevent the fluid from short-cycling through the other heat pump instead of the ground loop (see graphic here). A second example is when there are two central variable speed pumps piped in parallel serving multiple water source heat pumps. Check valves in closed loop geothermal and hydronic systems should be installed on the discharge side of the pump.
| PN | Description | Inlet | Modifier | Outlet | Modifier | U.O.M. | Photo |
|---|---|---|---|---|---|---|---|
| 3333 | Check Valve Insert OV25 | EACH |  |
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| 3854 | Check Valve, Insert, OV32 | EACH |  |
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| 3918 | Check Valve, 2” FPT, Spring, Brass, NBR Seat | 2" | FPT | NBR Seat | EACH |  |
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| 3490 | Fitting set, FL X 1” HB w/check valve | FL | 1" | HB | SET |  |
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| 3490-HALF | Fitting, FL X 1” HB w/check valve | FL | 1" | HB | EACH |  |
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| 4143 | Fitting set, FL X 1” FPT w/ check valve | FL | 1" | FPT | SET |  |
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| 4505 | Fitting, 1” MPT X 1” HB w/ check valve | 1" | MPT | 1" | HB | EACH |  |
| 4514 | Fitting, 1-1/4” MPT X 1-1/4” HB w/ check valve | 1-1/4" | MPT | 1-1/4" | HB | EACH |  |
| 4671 | Fitting. 1" MPT X 1" FPT W/ check valve | 1" | MPT | 1" | FPT | EACH |  |
| 4144 | Valve Assembly, FL X 1" FPT w/ check valve | FL | 1" | FPT | EACH | Coming Soon | |
| PFA54M-CV | Fusion adapter, 1-1/4” SF X 1” MPT w/ check valve | 1-1/4" | SF | 1" | MPT | EACH |  |
| 4732-CV | Volute, UP26 w/ check valve insert | EACH |  |
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| 5185 | 1" HB x 1" HB w/ check valve | 1" | HB | 1" | HB | SET |  |