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Watts FV-4M1-1 Vertical-Discharge Air Vent, 1 in MNPT, Brass Body, 150 psi - Vertical-Discharge Air Vents
WattsVertical-Discharge Air Vents

Watts FV-4M1-1 Vertical-Discharge Air Vent, 1 in MNPT, Brass Body, 150 psi

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

SKU 3G-OTH-70088

Also listed as: FV4M11 · FV 4M1 1 · FV-4M1-1

Brand
Watts
Item
FV-4M1-1 Vertical-Discharge Air Vent, 1 in MNPT, Brass Body, 150 psi
Part Number
FV-4M1- 1
Category
Vertical-Discharge Air Vents
Available to Order
Also known as:FV-4M1- 1Watts
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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-4M1- 1
Type
Top Port, For Water, Brass Body, Bottom
MNPT
1 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 with a brass body, designed for water systems. It features a 1 in MNPT top port and a bottom port, with a maximum pressure of 150 psi and a maximum temperature of 240°F. This model, manufacturer part number FV-4M1-1, is a single-port unit for releasing trapped air.

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-4M1-1 air vent used for?

The Watts FV-4M1-1 air vent is used to automatically release trapped air from water systems, preventing air locks and improving system efficiency. It is commonly installed on hydronic heating and cooling systems, boilers, and piping networks where air accumulation can reduce performance.

What are the specifications of the Watts FV-4M1-1 air vent?

The Watts FV-4M1-1 is a vertical-discharge air vent with a brass body. It has a 1 in MNPT top port and a bottom port, rated for water at a maximum pressure of 150 psi and a maximum temperature of 240°F. This single-port model is designed for releasing trapped air in water systems.

Where to buy the Watts FV-4M1-1 air vent worldwide?

You can source the Watts FV-4M1-1 air vent worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on this Watts model.

How to install the Watts FV-4M1-1 air vent?

Install the Watts FV-4M1-1 air vent at the highest point of the water system where air collects. Use thread sealant on the 1 in MNPT connection and tighten securely. Ensure the vent is oriented vertically for proper discharge. Follow local plumbing codes and the manufacturer's instructions for safe operation.

Used in

Common applications for Watts
Commercial plumbing – Watts standard capacity water pressure regulators (3/8 LF 26AB) for stabilizing incoming water pressure
Industrial steam systems – Watts 152A series steam pressure regulators for pressure reduction in process and heating lines
Cross-connection control – Watts 757 double check backflow preventers for commercial and industrial water supply protection
Boiler safety – Watts ASME Section XIII temperature and pressure relief valves for overpressure protection in heating systems
Hydronic heating – Watts CP16 pilot-operated pressure regulators for maintaining consistent pressure in steam or water loops
Water hammer mitigation – Watts LF15M2-A water hammer arrestors for absorbing surges in quick-closing valve applications
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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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