WATTS M300N-OSY-GPM 8 0191054 Double Check Detector Backflow Preventer Assembly, Shutoff Valve, 8 Inch Size, SS
€16,971.67 /unit
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Product Specifications:
| Item | Double Check Valve Assembly |
| Backflow Preventer Type | Double Check Detector Assembly |
| Body Material | Stainless Steel |
| Body Pattern | N Pattern |
| Buy American Act Compliant | No |
| By Pass | Yes |
| Bypass Size | 3/4" |
| Cap And Tether | No |
| Cross Reference | 0191054 |
| Disc Material | Silicone |
| Elbow Fitting | Yes |
| Hazard Protection Level | Non Health Hazard |
| Hot And Harsh Water | No |
| Hydrant Connection | No |
| Inlet Connection Size | 8" |
| Inlet Shutoff Valve Type | Outside Stem And Yoke Gate Valve |
| Inlet Size | 8" |
| Inlet Thread Type | Not Applicable |
| Inlet Type | Flanged Joint |
| Lead Free | No |
| Material | Stainless Steel |
| Max. Temp. | 110°F |
| Max. Working Pressure | 175 psi |
| Meter Type | GPM |
| Min. Temp. | 33°F |
| Outlet Connection Size | 8" |
| Outlet Connection Thread Type | Flanged Joint |
| Outlet Shutoff Valve Type | Outside Stem And Yoke Gate Valve |
| Outlet Thread Type | Not Applicable |
| Outlet Type | Flanged Joint |
| Polymer Coating | No |
| Pressure Operation | Continuous |
| Protection Type | Backpressure, Back Siphonage |
| Seat Material | Not Applicable |
| Series | M300 Series |
| Strainer | No |
| Tradename | Maxim |
Product Details:
Double Check Detector Backflow Preventer Assembly, Shutoff Valve, 8 Inch Size, SS
Product Variants
| Product | Model | Body Pattern | Meter Type | Max. Working Pressure | Min. Temp. | Inlet Type | Outlet Type | Outlet Size | Body Style | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
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M300N-BFG-GPM 8 | N Pattern | GPM | 175 psi | 33°F | - | - | - | - | €17,400.02 | RFQ
|
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M300N-BFG-CFM 8 | N Pattern | CFM | - | - | - | - | - | - | €17,400.02 | RFQ
|
![]() |
M300-OSY-LM 2 1/2 | Straight | No Meter | - | - | - | - | - | - | €5,431.42 | RFQ
|
![]() |
M300-OSY-LM 3 | - | - | - | - | - | - | - | - | €6,204.37 | RFQ
|
![]() |
M300-OSY-LM 6 | - | No Meter | 175 psi | 33°F | Flanged Joint | Flanged Joint | 6" | Straight | €8,574.75 | RFQ
|
![]() |
M300N-OSY-LM 3 | N Pattern | No Meter | 175 psi | 33°F | - | - | - | - | €6,375.96 | RFQ
|
![]() |
M300N-OSY-LM 6 | - | - | - | - | - | - | - | - | €9,703.47 | RFQ
|
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WATTS M300N-OSY-GPM 8 0191054 Double Check Detector Backflow Preventer Assembly, Shutoff Valve, 8 Inch Size, SS
€16,971.67 /unit



