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Watts Air Vent: One Port, Top Port, 1/8 in MNPT, For Water, Brass Body, 150 psi Max. - Vertical-Discharge Air Vents
WattsVertical-Discharge Air Vents

Watts Air Vent: One Port, Top Port, 1/8 in MNPT, For Water, Brass Body, 150 psi Max.

The Watts Air Vent: One Port is a vertical-discharge air vent designed for water systems. It features a brass body with a 1/8 in MNPT top port and a bottom connection, rated for a maximum pressure of 150 psi and a…

SKU 3G-OTH-70013

Also listed as: FV418 · FV 4 1 8 · FV-4-1-8

Brand
Watts
Item
Air Vent: One Port, Top Port, 1/8 in MNPT, For Water, Brass Body, 150 psi Max.
Category
Vertical-Discharge Air Vents
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

Watts
Manufacturer Part Number
FV-4-1/8
Type
Top Port, For Water, Brass Body, Bottom
MNPT
1/8 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 Air Vent: One Port is a vertical-discharge air vent designed for water systems. It features a brass body with a 1/8 in MNPT top port and a bottom connection, rated for a maximum pressure of 150 psi and a maximum temperature of 240°F.

Frequently Asked Questions

What is the Watts FV-4-1/8 air vent used for?

The Watts FV-4-1/8 air vent is used to automatically release trapped air from water systems, such as hydronic heating loops or domestic water lines. Its vertical-discharge design and brass body make it suitable for applications where air buildup can reduce efficiency or cause noise.

What are the specifications of the Watts FV-4-1/8 air vent?

The Watts FV-4-1/8 air vent has a 1/8 in MNPT top port, a brass body, and a bottom connection. It is rated for water service at a maximum pressure of 150 psi and a maximum temperature of 240°F. This vertical-discharge model is designed for one-port installations.

Where to buy the Watts FV-4-1/8 air vent worldwide?

3G Electric supplies the Watts FV-4-1/8 air vent to customers worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your site. Contact us for a quote and lead time on this brass air vent.

How to install the Watts FV-4-1/8 air vent?

Install the Watts FV-4-1/8 air vent by threading the 1/8 in MNPT top port into a compatible fitting on the water line. Ensure the vent is oriented vertically for proper discharge. Apply thread sealant to prevent leaks and verify the system pressure does not exceed 150 psi.

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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