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Product Specifications:
| Item | Automatic Vent Valve |
| Air Vent Connection Gender | Not Applicable |
| Air Vent Connection Size | Not Applicable |
| Air Vent Connection Type | Not Applicable |
| Air Vent Type | Float |
| Application | Glycol Systems |
| Body Material | Brass |
| Condensate Capacity | 2 lbs./hr. |
| Configuration | One Port |
| Connection Type | MNPT |
| Float Material | Polyethylene |
| For Media | Water |
| Gasket Material | Silicon Rubber |
| Includes Expansion Tank Port | Expansion Tank Connection Not Included |
| Inlet Connection Type | NPT |
| Inlet Gender | Male |
| Inlet Pipe Size | 1/4" |
| Inlet Port Connection Gender | Male |
| Inlet Port Connection Size | 1/4" |
| Inlet Port Location | Bottom |
| Inlet Size | 1/4" |
| Installation Orientation | Vertical |
| Manufacturer Series | FV-4 |
| Max. Operating Pressure | 150 psi |
| Max. Operating Temp. | 240°F |
| Max. Pressure | 150 psi |
| Min. Pressure | 1.45 psi |
| Number Of Inlet Ports | 1 |
| Port Types Included | Inlet, Outlet, Pressure Tap |
| Product Type | Air Vent |
| Release Method | Automatic |
| Relief Port Location | Top |
| Temp. Range | +33°F to +240°F |
| Vent Dia. | 1 1/4" |
| Vent Dia. | 1-1/4" |
Shipping Info:
| Ship weight (kg) | 0.14 |
| Ship height (cm) | 7.11 |
| Ship length (cm) | 4.32 |
| Ship width (cm) | 4.32 |
| HS code | 8481809050 |
| Country of Origin | US |
Product Details:
- Anti-vacuum device ideal for purging air from hot and cold water distribution systems and glycol chillers
- Allows separation & dispersal of air while the fluid is circulating in the system
- High-temperature-resistant polyethylene float to actuate the valve plug, which further prevents water from escaping the system
- Automatic air vent with silicone rubber seal
- Resistant to impurity contamination since the maximum float line of water always remains lower than the valve seal
- Vent Height: 3-1/8 inches
Product Variants
| Product | Model | Inlet Size | Connection Type | Body Material | Max. Pressure | Min. Pressure | Temp. Range | Max. Operating Temp. | Price | |
|---|---|---|---|---|---|---|---|---|---|---|
![]() |
FV-4-1/8 | 1/8" | MNPT | Brass | 150 psi | 1.45 psi | +33°F to +240°F | 240°F | €24.02 |
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WATTS FV-4-1/4 Automatic Vent Valve, 1/4 Inch MNPT
€23.75 /unit
