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Product Specifications:
| Item | Pressure Relief Valve |
| Application | Hot Water Supply Tanks, Water Heaters |
| Asme Section Code | Section Xiii |
| Body Height | 5 3/4" |
| Body Material | Copper Silicon Alloy |
| Connection Type | Fnptf x FNPTF |
| Cross Reference | 0121451 |
| Discharge Capacity | 3085000 btuH |
| Factory Set Pressure | 150 psi |
| For Media | Water |
| Inlet Connection Size | 1" |
| Max. Operating Pressure | 150 psi |
| Max. Operating Temperature | 210°F |
| Min. Operating Pressure | 75 psi |
| Min. Operating Temperature | -40°F |
| Outlet Connection Size | 1" |
| Preset Temperature | 210°F |
| Thermostat Length | 3" |
Shipping Info:
| Ship weight (kg) | 1.13 |
| Ship height (cm) | 14.29 |
| Ship width (cm) | 6.67 |
| Country of Origin | US |
Product Variants
| Product | Model | Factory Set Pressure | Overall Height | Inlet Connection Size | Connection Type | Outlet Connection Size | Discharge Capacity | Pressure Range | Inlet Thread Type | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
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740-075 1 | 75 psi | 7 1/4" | 1" | Fnptf x FNPTF | - | 2649000 btuH | 30 psi to 75 psi | NPT | - | RFQ
|
![]() |
174-Z3-T 075 | - | - | - | - | - | 2055000 btuH | 30 psi to 150 psi | NPT | €669.28 | |
![]() |
LFN30 5-30 1/2 | - | - | 1/2" | - | - | - | 5 psi to 30 psi | NPT | €572.24 | |
![]() |
LFF116-23 0-30 1 1/4 | - | - | - | - | - | - | - | - | €3,442.43 | RFQ
|
![]() |
LF174A-100 1 | 100 psi | 5 3/4" | 1" | Fnptf x FNPTF | 1" | 2635000 btuH | 50 psi to 150 psi | NPT | €1,536.97 | |
![]() |
LF174A-125 1 | - | - | 1" | - | 1" | - | 50 psi to 150 psi | NPT | €1,331.26 | |
![]() |
LF174A-75 1 | 75 psi | 5 3/4" | 1" | Fnptf x FNPTF | 1" | 2055000 btuH | 30 psi to 150 psi | NPT | €1,648.19 |
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WATTS LF140S3 150-210 1 0121451 Pressure Safety Relief Valve, 1 Inch Size, 150 psi, 3085000 Btu
€1,473.39 /unit





