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Watts HAV-1/8 Horizontal-Discharge Air Vent, 1/8 in MNPT, Brass Body, 125 psi - Horizontal-Discharge Air Vents
WattsHorizontal-Discharge Air Vents

Watts HAV-1/8 Horizontal-Discharge Air Vent, 1/8 in MNPT, Brass Body, 125 psi

The Watts Air Vent: One Port is a horizontal-discharge air vent designed for water systems. It features a brass body with a 1/8 in MNPT side port and bottom connection, rated for a maximum pressure of 125 psi and a…

SKU 3G-OTH-70272

Also listed as: HAV18 · HAV 1 8 · HAV-1-8

Brand
Watts
Item
HAV-1/8 Horizontal-Discharge Air Vent, 1/8 in MNPT, Brass Body, 125 psi
Part Number
HAV- 1/8
Category
Horizontal-Discharge Air Vents
Available to Order
Also known as:HAV- 1/8Watts
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Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
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Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

Watts
Manufacturer Part Number
HAV- 1/8
Type
Side Port, For Water, Brass Body, Bottom
MNPT
1/8 in
Max.
125 psi
Product Type
Air Vent

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

Product Description

The Watts Air Vent: One Port is a horizontal-discharge air vent designed for water systems. It features a brass body with a 1/8 in MNPT side port and bottom connection, rated for a maximum pressure of 125 psi and a maximum temperature of 240°F.

Frequently Asked Questions

What is a Watts HAV-1/8 air vent used for?

The Watts HAV-1/8 air vent automatically releases trapped air from water systems, preventing air locks and improving system efficiency. It is commonly installed on hydronic heating loops, radiators, and water pipelines where air accumulation can reduce flow or cause noise.

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

The Watts HAV-1/8 is a one-port, side-port air vent with a 1/8 in MNPT connection and a brass body. It is rated for water service up to 125 psi maximum pressure and 240°F maximum temperature. The bottom port allows horizontal discharge of air.

Where to buy a Watts HAV-1/8 air vent worldwide?

3G Electric supplies the Watts HAV-1/8 air vent to customers worldwide. As a global industrial sourcing partner, we handle full logistics, customs clearance, and delivery to your site. Contact us for a quote and lead time on this genuine Watts part.

How to install a Watts HAV-1/8 air vent?

Install the Watts HAV-1/8 air vent with the bottom port threaded into a 1/8 in MNPT fitting on the highest point of the water line. Ensure the vent is upright for proper air release. Use thread sealant on the male threads and do not overtighten the brass body.

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 horizontal-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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