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Watts Air Vent: One Port, Top Port, 1/4 in MNPT, For Water, Brass Body, 150 psi Max. - Vertical-Discharge Air Vents
WattsVertical-Discharge Air Vents

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

Brand
Watts
Item
Air Vent: One Port, Top Port, 1/4 in MNPT, For Water, Brass Body, 150 psi Max.
Category
Vertical-Discharge Air Vents
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Local availability & support — the Philippines

Delivery
5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
Payment
Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
Ships to
Manila, Quezon City, Cebu, Davao, Batangas

Technical Specifications

Watts
Manufacturer Part Number
FV-4-1/4
Type
Top Port, For Water, Brass Body, Bottom
MNPT
1/4 in
Max.
150 psi
Product Type
Air Vent

Technical Documents

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Watts Products
3G Electric (S) Pte. Ltd. — Singapore

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.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

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.

Used in

Common applications for Watts
Industrial burner gas safety systems — Watts HF2000 filters with GF-series seal kits maintain clean, regulated gas supply to burner pilot and main flame controls
Commercial heating and boiler installations — Modular filter assemblies support preventive maintenance and component replacement without full system shutdown
Process gas delivery pipelines — DN25 through DN125 filter bodies accommodate varying flow rates and inlet pressures across manufacturing and chemical processes
Gas pressure regulation benches — Multi-stage Watts filter platforms integrate with pressure reducers and safety shutoff valves in test and calibration environments
Equipment retrofit and upgrade projects — Available connection sizes and seal kits enable adaptation of newer Watts components into legacy gas control systems
Planned maintenance and spare-parts inventory — Filter seal kits allow facilities to stock consumables in advance, reducing downtime during scheduled gas system servicing

Watts Products

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.

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Compatible alternatives & equivalents

Cross-referenced by specification & description
Sealing Fitting with Drain - Vertical: Iron, 1 in Trade Size, Male, 4 5/16 in Overall Lg (MPN EYD-36)
APPLETON ELECTRIC
Sealing Fitting with Drain - Vertical: Iron, 1 in Trade Size, Male, 4 5/16 in Overall Lg (MPN EYD-36)
Sealing Fitting with Drain - Vertical: Iron, 1 1/4 in Trade Size, Female, 5 1/16 in Overall Lg (MPN EYD-4)
APPLETON ELECTRIC
Sealing Fitting with Drain - Vertical: Iron, 1 1/4 in Trade Size, Female, 5 1/16 in Overall Lg (MPN EYD-4)
Sealing Fitting - Vertical: Iron, 4 in Trade Size, Male to Female, 9 3/8 in Overall Lg (MPN EYDM-400)
APPLETON ELECTRIC
Sealing Fitting - Vertical: Iron, 4 in Trade Size, Male to Female, 9 3/8 in Overall Lg (MPN EYDM-400)
Sealing Fitting with Drain - Vertical: Iron, 4 in Trade Size, Male, 9 3/4 in Overall Lg (MPN EYD-106)
APPLETON ELECTRIC
Sealing Fitting with Drain - Vertical: Iron, 4 in Trade Size, Male, 9 3/4 in Overall Lg (MPN EYD-106)
Sealing Fitting - Vertical: Iron, 1 1/4 in Trade Size, Male to Female, 4 15/16 in Overall Lg (MPN EYDM-125)
APPLETON ELECTRIC
Sealing Fitting - Vertical: Iron, 1 1/4 in Trade Size, Male to Female, 4 15/16 in Overall Lg (MPN EYDM-125)
Sealing Fitting with Drain - Vertical: Iron, 1 1/4 in Trade Size, Male, 5 1/16 in Overall Lg (MPN EYD-46)
APPLETON ELECTRIC
Sealing Fitting with Drain - Vertical: Iron, 1 1/4 in Trade Size, Male, 5 1/16 in Overall Lg (MPN EYD-46)

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