Watts Air Vent: One Port, Top Port, 1/4 in MNPT, For Water, Brass Body, 150 psi Max.
The Watts FV-4-1/4 is a one-port, vertical-discharge air vent with a 1/4 in MNPT top port and a brass body, designed for water systems. It has a maximum pressure of 150 psi and a maximum temperature of 240°F.
SKU 3G-OTH-70018
Also listed as: FV414 · FV 4 1 4 · FV-4-1-4
Local availability & support
- Delivery
- Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
- Payment
- Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.
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Product Description
The Watts FV-4-1/4 is a one-port, vertical-discharge air vent with a 1/4 in MNPT top port and a brass body, designed for water systems. It has a maximum pressure of 150 psi and a maximum temperature of 240°F.
Frequently Asked Questions
What is the Watts FV-4-1/4 air vent used for?
The Watts FV-4-1/4 is a one-port, vertical-discharge air vent designed to release trapped air from water systems. It is commonly used in hydronic heating and plumbing applications to prevent air locks and improve system efficiency. The brass body and 1/4 in MNPT top port make it suitable for compact installations.
What are the specifications of the Watts FV-4-1/4 air vent?
The Watts FV-4-1/4 air vent has a 1/4 in MNPT top port, a brass body, and a bottom connection. It is rated for water systems with a maximum pressure of 150 psi and a maximum temperature of 240°F. The manufacturer part number is FV-4-1/4, and it is a vertical-discharge type.
Where to buy the Watts FV-4-1/4 air vent worldwide?
You can source the Watts FV-4-1/4 air vent through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead times; we supply this Watts air vent to procurement teams and engineers globally.
How to install the Watts FV-4-1/4 air vent?
Install the Watts FV-4-1/4 air vent by threading the 1/4 in MNPT top port into a compatible fitting on the water system. Ensure the vent is oriented vertically for proper discharge. Apply thread sealant to prevent leaks. Do not exceed 150 psi or 240°F. Follow standard plumbing practices for air vent installation.
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3G Electric supplies Watts vertical-discharge air vents. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
